diff --git a/examples/7segment.cpp b/examples/7segment.cpp
index 3faf48e6..9ae83058 100644
--- a/examples/7segment.cpp
+++ b/examples/7segment.cpp
@@ -67,7 +67,7 @@ class SegmentView final : public finalcut::FDialog
 
     // Data members
     std::map<wchar_t, sevenSegment> code{};
-    finalcut::FString line[3];
+    finalcut::FString line[3]{};
     finalcut::FLineEdit Input{"0123", this};
     finalcut::FButton Exit{"E&xit", this};
 };
@@ -80,13 +80,13 @@ SegmentView::SegmentView (finalcut::FWidget* parent)
   //   Avoids calling a virtual function from the constructor
   //   (CERT, OOP50-CPP)
   FDialog::setText ("Seven-segment display");
-  FDialog::setGeometry (FPoint(25, 5), FSize(42, 15));
+  FDialog::setGeometry (FPoint{25, 5}, FSize{42, 15});
 
   // Set encoding
   hexEncoding();
 
   // Input field
-  Input.setGeometry (FPoint(2, 2), FSize(12, 1));
+  Input.setGeometry (FPoint(2, 2), FSize{12, 1});
   Input.setLabelText (L"&Hex value");
   Input.setLabelText (L"&Hex-digits or (.) (:) (H) (L) (P) (U)");
   Input.setLabelOrientation(finalcut::FLineEdit::label_above);
@@ -94,7 +94,7 @@ SegmentView::SegmentView (finalcut::FWidget* parent)
   Input.setInputFilter("[:.hHlLpPuU[:xdigit:]]");
 
   // Exit button
-  Exit.setGeometry(FPoint(28, 11), FSize(10, 1));
+  Exit.setGeometry(FPoint{28, 11}, FSize{10, 1});
 
   // Add some function callbacks
   Input.addCallback
@@ -203,11 +203,11 @@ void SegmentView::draw()
 
   FDialog::draw();
   setColor(fc::LightGray, fc::Black);
-  finalcut::drawBorder(this, FRect(FPoint(3, 6), FPoint(40, 11)));
+  finalcut::drawBorder(this, FRect(FPoint{3, 6}, FPoint{40, 11}));
 
   for (auto&& ch : Input.getText().toUpper())
   {
-    const FColorPair color(fc::LightRed, fc::Black);
+    const FColorPair color{fc::LightRed, fc::Black};
     get7Segment(ch);
 
     for (std::size_t i{0}; i < 3; i++)
@@ -219,10 +219,10 @@ void SegmentView::draw()
   if ( length < 36 )
     left_space << finalcut::FString(36 - length, ' ');
 
-  print() << FPoint (4, 7) << left_space << tbuffer[0]
-          << FPoint (4, 8) << left_space << tbuffer[1]
-          << FPoint (4, 9) << left_space << tbuffer[2]
-          << FPoint (4, 10) << finalcut::FString(36, ' ');
+  print() << FPoint {4, 7} << left_space << tbuffer[0]
+          << FPoint {4, 8} << left_space << tbuffer[1]
+          << FPoint {4, 9} << left_space << tbuffer[2]
+          << FPoint {4, 10} << finalcut::FString{36, ' '};
 }
 
 
diff --git a/examples/background-color.cpp b/examples/background-color.cpp
index 7e59610b..8cf6f0bd 100644
--- a/examples/background-color.cpp
+++ b/examples/background-color.cpp
@@ -98,10 +98,10 @@ Background::Background (finalcut::FWidget* parent)
   //   Avoids calling a virtual function from the constructor
   //   (CERT, OOP50-CPP)
   FDialog::setText ("Background color palette");
-  FDialog::setGeometry (FPoint(25, 5), FSize(32, 12));
+  FDialog::setGeometry (FPoint{25, 5}, FSize{32, 12});
 
   // Combobox
-  color_choice.setGeometry (FPoint(2, 2), FSize(18, 1));
+  color_choice.setGeometry (FPoint{2, 2}, FSize{18, 1});
   color_choice.setLabelOrientation (finalcut::FLineEdit::label_above);
   color_choice.setLabelText ("Color choice");
   color_choice.unsetEditable();
@@ -114,19 +114,19 @@ Background::Background (finalcut::FWidget* parent)
   }
 
   // Spin boxes
-  red.setGeometry (FPoint(2, 5), FSize(7, 1));
+  red.setGeometry (FPoint{2, 5}, FSize{7, 1});
   red.setLabelOrientation (finalcut::FLineEdit::label_above);
   red.setLabelText ("Red");
   red.setRange (0, 255);
   red.setValue (0x80);
 
-  green.setGeometry (FPoint(12, 5), FSize(7, 1));
+  green.setGeometry (FPoint{12, 5}, FSize{7, 1});
   green.setLabelOrientation (finalcut::FLineEdit::label_above);
   green.setLabelText ("Green");
   green.setRange (0, 255);
   green.setValue (0xa4);
 
-  blue.setGeometry (FPoint(22, 5), FSize(7, 1));
+  blue.setGeometry (FPoint{22, 5}, FSize{7, 1});
   blue.setLabelOrientation (finalcut::FLineEdit::label_above);
   blue.setLabelText ("Blue");
   blue.setRange (0, 255);
@@ -142,7 +142,7 @@ Background::Background (finalcut::FWidget* parent)
   }
 
   // Quit button
-  quit.setGeometry(FPoint(19, 8), FSize(10, 1));
+  quit.setGeometry(FPoint{19, 8}, FSize{10, 1});
 
   // Add some function callbacks
   quit.addCallback
diff --git a/examples/calculator.cpp b/examples/calculator.cpp
index 680258d5..ea9f0aa5 100644
--- a/examples/calculator.cpp
+++ b/examples/calculator.cpp
@@ -251,7 +251,7 @@ Calc::Calc (FWidget* parent)
   //   Avoids calling a virtual function from the constructor
   //   (CERT, OOP50-CPP)
   FDialog::setText ("Calculator");
-  FDialog::setGeometry (FPoint(19, 6), FSize(37, 18));
+  FDialog::setGeometry (FPoint{19, 6}, FSize{37, 18});
 
   mapKeyFunctions();
   clearInfixOperator();
@@ -263,13 +263,13 @@ Calc::Calc (FWidget* parent)
     button_no[key] = key;
 
     if ( key == Equals )
-      btn->setGeometry(FPoint(30, 15), FSize(5, 3));
+      btn->setGeometry(FPoint{30, 15}, FSize{5, 3});
     else
     {
       const std::size_t n = ( key <= Three ) ? 0 : 1;
       const int x = int(key + n) % 5 * 7 + 2;
       const int y = int(key + n) / 5 * 2 + 3;
-      btn->setGeometry(FPoint(x, y), FSize(5, 1));
+      btn->setGeometry(FPoint{x, y}, FSize{5, 1});
     }
 
     btn->setFlat();
@@ -398,7 +398,7 @@ void Calc::cb_buttonClicked (const finalcut::FWidget*, FDataPtr data)
 //----------------------------------------------------------------------
 void Calc::drawDispay()
 {
-  finalcut::FString display(input);
+  finalcut::FString display{input};
 
   if ( display.isNull() || display.isEmpty()  )
     display = L'0';
@@ -410,7 +410,7 @@ void Calc::drawDispay()
     display = display.left(display.getLength() - 1);
 
   if ( ! display.isEmpty() && display.getLength() < max_char )
-    display.insert(finalcut::FString(max_char - display.getLength(), L' '), 0);
+    display.insert(finalcut::FString{max_char - display.getLength(), L' '}, 0);
 
   if ( display.getLength() > max_char )
     display = display.left(max_char);
@@ -425,9 +425,9 @@ void Calc::drawDispay()
     setReverse(false);
 
   const auto& wc = getFWidgetColors();
-  print() << FColorPair(fc::Black, fc::LightGray)
-          << FPoint(3, 3) << display << ' '
-          << FColorPair(wc.dialog_fg, wc.dialog_bg);
+  print() << FColorPair{fc::Black, fc::LightGray}
+          << FPoint{3, 3} << display << ' '
+          << FColorPair{wc.dialog_fg, wc.dialog_bg};
 
   if ( isMonochron() )
     setReverse(true);
@@ -439,12 +439,12 @@ void Calc::drawDispay()
     const wchar_t top_line        {fc::NF_border_line_upper};
     const wchar_t right_line      {fc::NF_rev_border_line_right};
     const wchar_t left_line       {fc::NF_border_line_left};
-    print() << FPoint(3, 2) << finalcut::FString(33, bottom_line);
-    print() << FPoint(2, 3) << right_line;
-    print() << FPoint(36, 3) << left_line;
-    print() << FPoint(3, 4);
-    const finalcut::FString top_bottom_line_5 (5, top_bottom_line);
-    const finalcut::FString top_line_2 (2, top_line);
+    print() << FPoint{3, 2} << finalcut::FString{33, bottom_line};
+    print() << FPoint{2, 3} << right_line;
+    print() << FPoint{36, 3} << left_line;
+    print() << FPoint{3, 4};
+    const finalcut::FString top_bottom_line_5 {5, top_bottom_line};
+    const finalcut::FString top_line_2 {2, top_line};
     print ( top_bottom_line_5 + top_line_2
           + top_bottom_line_5 + top_line_2
           + top_bottom_line_5 + top_line_2
@@ -456,10 +456,10 @@ void Calc::drawDispay()
     const wchar_t vertical_and_right {fc::BoxDrawingsVerticalAndRight};
     const wchar_t horizontal         {fc::BoxDrawingsHorizontal};
     const wchar_t vertical_and_left  {fc::BoxDrawingsVerticalAndLeft};
-    finalcut::FString separator ( finalcut::FString(vertical_and_right)
-                                + finalcut::FString(35, horizontal)
-                                + finalcut::FString(vertical_and_left) );
-    print() << FPoint(1, 4) << separator;
+    finalcut::FString separator ( finalcut::FString{vertical_and_right}
+                                + finalcut::FString{35, horizontal}
+                                + finalcut::FString{vertical_and_left} );
+    print() << FPoint{1, 4} << separator;
   }
 }
 
diff --git a/examples/checklist.cpp b/examples/checklist.cpp
index 1c9c0d05..97b476b0 100644
--- a/examples/checklist.cpp
+++ b/examples/checklist.cpp
@@ -80,12 +80,12 @@ CheckList::CheckList (finalcut::FWidget* parent)
   //   (CERT, OOP50-CPP)
   FDialog::setText (L"Shopping list");
   const std::size_t nf_offset = ( isNewFont() ) ? 1 : 0;
-  FDialog::setGeometry ( FPoint(int(1 + (parent->getWidth() - 28) / 2), 5)
-                       , FSize(28 + nf_offset, 13) );
+  FDialog::setGeometry ( FPoint{int(1 + (parent->getWidth() - 28) / 2), 5}
+                       , FSize{28 + nf_offset, 13} );
   setShadow();
   listView.ignorePadding();
-  listView.setGeometry ( FPoint(1 + int(nf_offset), 2)
-                       , FSize(getWidth() - nf_offset, getHeight() - 1) );
+  listView.setGeometry ( FPoint{1 + int(nf_offset), 2}
+                       , FSize{getWidth() - nf_offset, getHeight() - 1} );
 
   // Add columns to the view
   listView.addColumn ("Item");
@@ -96,9 +96,9 @@ CheckList::CheckList (finalcut::FWidget* parent)
   listView.setColumnSortType (2, fc::by_name);
 
   // Statusbar at the bottom
-  finalcut::FString separator;
+  finalcut::FString separator{};
   separator << ' ' << fc::BoxDrawingsVertical << ' ';
-  listView.setStatusbarMessage ( finalcut::FString()
+  listView.setStatusbarMessage ( finalcut::FString{}
                                  << "<Q> exit" << separator
                                  << "<Space> select an item" << separator
                                  << "<Enter> see your pick list");
@@ -171,7 +171,7 @@ void CheckList::onClose (finalcut::FCloseEvent* ev)
 void CheckList::cb_showList (const finalcut::FWidget*, const FDataPtr)
 {
   auto iter = listView.beginOfList();
-  finalcut::FString shopping_list;
+  finalcut::FString shopping_list{};
 
   while ( iter != listView.endOfList() )
   {
diff --git a/examples/choice.cpp b/examples/choice.cpp
index 08a1ac6a..2869a412 100644
--- a/examples/choice.cpp
+++ b/examples/choice.cpp
@@ -97,24 +97,24 @@ void preset (std::vector<FRadioButtonPtr>& os)
 //----------------------------------------------------------------------
 int main (int argc, char* argv[])
 {
-  finalcut::FString label_text("no OS");
+  finalcut::FString label_text{"no OS"};
 
   // Create the application object
-  finalcut::FApplication app(argc, argv);
+  finalcut::FApplication app{argc, argv};
 
   {  // Create a simple modal dialog box in this scope
-    finalcut::FDialog dgl(&app);
+    finalcut::FDialog dgl{&app};
     dgl.setModal();
     dgl.setText ("UNIX select");
     const std::size_t w{20};
     const std::size_t h{13};
     const int x = int(app.getDesktopWidth() - w) / 2;
     const int y = int(app.getDesktopHeight() - h) / 2;
-    dgl.setGeometry (FPoint(x, y), FSize(w, h));
+    dgl.setGeometry (FPoint{x, y}, FSize{w, h});
 
     // Create a button group
     finalcut::FButtonGroup checkButtonGroup("choice", &dgl);
-    checkButtonGroup.setGeometry (FPoint(2, 1), FSize(16, 7));
+    checkButtonGroup.setGeometry (FPoint{2, 1}, FSize{16, 7});
 
     // Create radio buttons
     std::vector<FRadioButtonPtr> os(9);
@@ -124,7 +124,7 @@ int main (int argc, char* argv[])
     // => checkButtonGroup.setScrollSize(...) is not required
     //    because a FButtonGroup is self-adjusting
     for (uInt i{0}; i < os.size(); i++)
-      os[i]->setGeometry(FPoint(1, int(1 + i)), FSize(12, 1));
+      os[i]->setGeometry(FPoint{1, int(1 + i)}, FSize{12, 1});
 
     preset(os);
 
@@ -134,7 +134,7 @@ int main (int argc, char* argv[])
 
     // Create a OK button
     finalcut::FButton ok("&OK", &dgl);
-    ok.setGeometry (FPoint(10, 9), FSize(8, 1));
+    ok.setGeometry (FPoint{10, 9}, FSize{8, 1});
 
     // Connect the button signal "clicked" with the callback function
     ok.addCallback
@@ -160,7 +160,7 @@ int main (int argc, char* argv[])
 
 
   // Create and show tooltip for two seconds
-  finalcut::FToolTip tooltip(&app);
+  finalcut::FToolTip tooltip{&app};
   tooltip.setText ("You have chosen " + label_text);
   tooltip.show();
   sleep(2);
diff --git a/examples/dialog.cpp b/examples/dialog.cpp
index ca740d5b..705a9bb6 100644
--- a/examples/dialog.cpp
+++ b/examples/dialog.cpp
@@ -45,32 +45,32 @@ void cb_quit (const finalcut::FWidget*, FDataPtr data)
 int main (int argc, char* argv[])
 {
   // Create the application object
-  finalcut::FApplication app(argc, argv);
+  finalcut::FApplication app{argc, argv};
 
   // Create a simple dialog box
-  finalcut::FDialog dgl(&app);
+  finalcut::FDialog dgl{&app};
   dgl.setText ("FDialog");
-  dgl.setGeometry (FPoint(4, 3), FSize(41, 11));
+  dgl.setGeometry (FPoint{4, 3}, FSize{41, 11});
 
   // Create text labels
-  finalcut::FLabel label_1(&dgl);
-  finalcut::FLabel label_2(&dgl);
+  finalcut::FLabel label_1{&dgl};
+  finalcut::FLabel label_2{&dgl};
 
   label_1 << finalcut::fc::BlackUpPointingTriangle
-          << std::wstring(L"\n")
+          << std::wstring{L"\n"}
           << finalcut::fc::BoxDrawingsUpAndRight
-          << finalcut::FString(2, finalcut::fc::BoxDrawingsHorizontal)
+          << finalcut::FString{2, finalcut::fc::BoxDrawingsHorizontal}
           << " Double click the title bar button,";
   label_2 << "press Q on the keyboard,\n"
           << "or push the button below to exit\n"
           << "the program.";
 
-  label_1.setGeometry (FPoint(1, 1), FSize(38, 2));
-  label_2.setGeometry (FPoint(5, 3), FSize(34, 3));
+  label_1.setGeometry (FPoint{1, 1}, FSize{38, 2});
+  label_2.setGeometry (FPoint{5, 3}, FSize{34, 3});
 
   // Create the quit button
-  finalcut::FButton btn("&Quit", &dgl);
-  btn.setGeometry (FPoint(16, 7), FSize(9, 1));
+  finalcut::FButton btn{"&Quit", &dgl};
+  btn.setGeometry (FPoint{16, 7}, FSize{9, 1});
 
   // Connect the button signal "clicked" with the callback function
   btn.addCallback
diff --git a/examples/fullwidth-character.cpp b/examples/fullwidth-character.cpp
index 0934a24a..8bc6067e 100644
--- a/examples/fullwidth-character.cpp
+++ b/examples/fullwidth-character.cpp
@@ -34,44 +34,44 @@ using finalcut::FSize;
 int main (int argc, char* argv[])
 {
   // Create the application object
-  finalcut::FApplication app(argc, argv);
+  finalcut::FApplication app{argc, argv};
 
   // Create a simple dialog box
-  finalcut::FDialog dgl(&app);
+  finalcut::FDialog dgl{&app};
   dgl.setText (full("Dialog"));
-  dgl.setSize (FSize(37, 16));
-  dgl.setPos (FPoint( int(app.getDesktopWidth() - dgl.getWidth()) / 2
-                    , int(app.getDesktopHeight() - dgl.getHeight()) / 2));
+  dgl.setSize (FSize{37, 16});
+  dgl.setPos ({ int(app.getDesktopWidth() - dgl.getWidth()) / 2
+              , int(app.getDesktopHeight() - dgl.getHeight()) / 2});
   dgl.setShadow();
 
   // Create input fields
-  finalcut::FLineEdit field1 (&dgl);
+  finalcut::FLineEdit field1 {&dgl};
   field1.setLabelText (full("Input"));
   field1.setText (L"你好");  // Nǐ hǎo (chinese)
   field1.setStatusbarMessage (full("Type your text here"));
-  field1.setGeometry (FPoint(15, 1), FSize(19, 1));
+  field1.setGeometry (FPoint{15, 1}, FSize{19, 1});
 
-  finalcut::FLineEdit field2 (&dgl);
+  finalcut::FLineEdit field2 {&dgl};
   field2.setLabelText (L"Comment");
   field2.setText (full(L"Hello"));
   field2.setStatusbarMessage (full("Post a comment"));
-  field2.setGeometry (FPoint(15, 3), FSize(19, 1));
+  field2.setGeometry (FPoint{15, 3}, FSize{19, 1});
 
   // Create the button group
-  finalcut::FButtonGroup group (full("Side"), &dgl);
-  group.setGeometry(FPoint(2, 5), FSize(32, 3));
+  finalcut::FButtonGroup group {full("Side"), &dgl};
+  group.setGeometry(FPoint{2, 5}, FSize{32, 3});
 
   // Create radio buttons
-  finalcut::FRadioButton left ("&" + full("Left"), &group);
-  finalcut::FRadioButton right ("&" + full("Right"), &group);
+  finalcut::FRadioButton left {"&" + full("Left"), &group};
+  finalcut::FRadioButton right {"&" + full("Right"), &group};
   left.setStatusbarMessage (full("Prefer the left side"));
   right.setStatusbarMessage (full("Prefer the right side"));
-  left.setGeometry (FPoint(1, 1), FSize(8, 1));
-  right.setGeometry (FPoint(15, 1), FSize(10, 1));
+  left.setGeometry (FPoint{1, 1}, FSize{8, 1});
+  right.setGeometry (FPoint{15, 1}, FSize{10, 1});
 
   // Create a scrollable text field
-  finalcut::FTextView scroll_text (&dgl);
-  scroll_text.setGeometry (FPoint(2, 8), FSize(32, 3));
+  finalcut::FTextView scroll_text {&dgl};
+  scroll_text.setGeometry (FPoint{2, 8}, FSize{32, 3});
   finalcut::FString text_line{"FINAL CUT supports "
                               "full-width characters."};
   scroll_text << full(text_line);
@@ -79,16 +79,16 @@ int main (int argc, char* argv[])
                                    "left with the arrow keys");
 
   // Create a OK button
-  finalcut::FButton btn("&ＯＫ", &dgl);
+  finalcut::FButton btn {"&ＯＫ", &dgl};
   btn.setStatusbarMessage (full("Press Enter to exit the dialog"));
-  btn.setGeometry (FPoint(24, 12), FSize(10, 1));
+  btn.setGeometry (FPoint{24, 12}, FSize{10, 1});
 
   // Create the status bar
-  finalcut::FStatusBar sbar(&dgl);
+  finalcut::FStatusBar sbar {&dgl};
   finalcut::FStatusKey key_F1 (finalcut::fc::Fkey_f1, "Info", &sbar);
 
   // Create the menu bar
-  finalcut::FMenuBar Menubar(&dgl);
+  finalcut::FMenuBar Menubar {&dgl};
 
   // Create menu bar items
   finalcut::FMenu     File{L"&Ｆｉｌｅ", &Menubar};
diff --git a/examples/hello.cpp b/examples/hello.cpp
index 1d8e546c..e90643aa 100644
--- a/examples/hello.cpp
+++ b/examples/hello.cpp
@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2015-2018 Markus Gans                                      *
+* Copyright 2015-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -26,10 +26,10 @@
 int main (int argc, char* argv[])
 {
   // Create the application object
-  finalcut::FApplication app(argc, argv);
+  finalcut::FApplication app{argc, argv};
 
   // Create a simple dialog box
-  finalcut::FMessageBox mbox(&app);
+  finalcut::FMessageBox mbox{&app};
   mbox.setText("Hello world");
 
   // Start the application
diff --git a/examples/input-dialog.cpp b/examples/input-dialog.cpp
index e39e2c38..99c9295a 100644
--- a/examples/input-dialog.cpp
+++ b/examples/input-dialog.cpp
@@ -61,21 +61,21 @@ void cb_publish (finalcut::FWidget* widget, FDataPtr data)
 int main (int argc, char* argv[])
 {
   // Create the application object
-  finalcut::FApplication app(argc, argv);
+  finalcut::FApplication app{argc, argv};
 
   // Create a simple dialog box
-  finalcut::FDialog dgl(&app);
+  finalcut::FDialog dgl{&app};
   dgl.setText ("Data input");
-  dgl.setGeometry (FPoint(4, 2), FSize(37, 22));
+  dgl.setGeometry (FPoint{4, 2}, FSize{37, 22});
   dgl.setShadow();
 
   // Create input fields
-  finalcut::FLineEdit name_field (&dgl);
-  finalcut::FLineEdit pw_field (&dgl);
-  finalcut::FLineEdit email_field (&dgl);
-  finalcut::FLineEdit city_field (&dgl);
-  finalcut::FLineEdit st_field (&dgl);
-  finalcut::FLineEdit c_field (&dgl);
+  finalcut::FLineEdit name_field {&dgl};
+  finalcut::FLineEdit pw_field {&dgl};
+  finalcut::FLineEdit email_field {&dgl};
+  finalcut::FLineEdit city_field {&dgl};
+  finalcut::FLineEdit st_field {&dgl};
+  finalcut::FLineEdit c_field {&dgl};
 
   // Set input type to password
   pw_field.setInputType (finalcut::FLineEdit::password);
@@ -87,37 +87,37 @@ int main (int argc, char* argv[])
   st_field.setLabelText (L"&State");
   c_field.setLabelText (L"&Country");
 
-  name_field.setGeometry (FPoint(11, 1), FSize(23, 1));
-  pw_field.setGeometry (FPoint(11, 3), FSize(23, 1));
-  email_field.setGeometry (FPoint(11, 5), FSize(23, 1));
-  city_field.setGeometry (FPoint(11, 7), FSize(23, 1));
-  st_field.setGeometry (FPoint(11, 9), FSize(23, 1));
-  c_field.setGeometry (FPoint(11, 11), FSize(4, 1));
+  name_field.setGeometry (FPoint{11, 1}, FSize{23, 1});
+  pw_field.setGeometry (FPoint{11, 3}, FSize{23, 1});
+  email_field.setGeometry (FPoint{11, 5}, FSize{23, 1});
+  city_field.setGeometry (FPoint{11, 7}, FSize{23, 1});
+  st_field.setGeometry (FPoint{11, 9}, FSize{23, 1});
+  c_field.setGeometry (FPoint{11, 11}, FSize{4, 1});
 
   // Create the button group
-  finalcut::FButtonGroup radioButtonGroup ("Sex", &dgl);
-  radioButtonGroup.setGeometry(FPoint(2, 13), FSize(13, 4));
+  finalcut::FButtonGroup radioButtonGroup {"Sex", &dgl};
+  radioButtonGroup.setGeometry(FPoint{2, 13}, FSize{13, 4});
 
   // Create radio buttons
-  finalcut::FRadioButton male ("&Male", &radioButtonGroup);
-  finalcut::FRadioButton female ("&Female", &radioButtonGroup);
-  male.setGeometry (FPoint(1, 1), FSize(8, 1));
-  female.setGeometry (FPoint(1, 2), FSize(10, 1));
+  finalcut::FRadioButton male {"&Male", &radioButtonGroup};
+  finalcut::FRadioButton female {"&Female", &radioButtonGroup};
+  male.setGeometry (FPoint{1, 1}, FSize{8, 1});
+  female.setGeometry (FPoint{1, 2}, FSize{10, 1});
 
   // Create another button group
-  finalcut::FButtonGroup checkButtonGroup ("&Data options", &dgl);
-  checkButtonGroup.setGeometry(FPoint(16, 13), FSize(19, 4));
+  finalcut::FButtonGroup checkButtonGroup {"&Data options", &dgl};
+  checkButtonGroup.setGeometry(FPoint{16, 13}, FSize{19, 4});
 
   // Create checkbox buttons
-  finalcut::FCheckBox check1 ("Save data", &checkButtonGroup);
-  finalcut::FCheckBox check2 ("Encrypt data", &checkButtonGroup);
-  check1.setGeometry (FPoint(1, 1), FSize(13, 1));
-  check2.setGeometry (FPoint(1, 2), FSize(16, 1));
+  finalcut::FCheckBox check1 {"Save data", &checkButtonGroup};
+  finalcut::FCheckBox check2 {"Encrypt data", &checkButtonGroup};
+  check1.setGeometry (FPoint{1, 1}, FSize{13, 1});
+  check2.setGeometry (FPoint{1, 2}, FSize{16, 1});
   check2.setDisable();
 
   // Create a OK button
-  finalcut::FButton btn("&OK", &dgl);
-  btn.setGeometry (FPoint(24, 18), FSize(10, 1));
+  finalcut::FButton btn {"&OK", &dgl};
+  btn.setGeometry (FPoint{24, 18}, FSize{10, 1});
 
   // Connect checkbox signal "clicked" with a callback function
   check1.addCallback
diff --git a/examples/keyboard.cpp b/examples/keyboard.cpp
index 705d3efe..33cd25a8 100644
--- a/examples/keyboard.cpp
+++ b/examples/keyboard.cpp
@@ -68,8 +68,7 @@ void Keyboard::onKeyPress (finalcut::FKeyEvent* ev)
   if ( is_last_line )
     scrollAreaForward (getVirtualDesktop());
 
-  setAreaCursor ( finalcut::FPoint(1, getPrintPos().getY())
-                , true, getVirtualDesktop() );
+  setAreaCursor ({1, getPrintPos().getY()}, true, getVirtualDesktop());
 }
 
 //----------------------------------------------------------------------
@@ -82,11 +81,11 @@ void Keyboard::onAccel (finalcut::FAccelEvent* ev)
 //----------------------------------------------------------------------
 void Keyboard::draw()
 {
-  print() << finalcut::FPoint(1, 1)
+  print() << finalcut::FPoint{1, 1}
           << "---------------\n"
           << "Press Q to quit\n"
           << "---------------\n";
-  setAreaCursor (finalcut::FPoint(1, 4), true, getVirtualDesktop());
+  setAreaCursor ({1, 4}, true, getVirtualDesktop());
 }
 
 //----------------------------------------------------------------------
@@ -95,12 +94,12 @@ void Keyboard::draw()
 int main (int argc, char* argv[])
 {
   // Create the application object
-  finalcut::FApplication app(argc, argv);
+  finalcut::FApplication app{argc, argv};
   app.setForegroundColor(finalcut::fc::Default);
   app.setBackgroundColor(finalcut::fc::Default);
 
   // Create a keyboard object
-  Keyboard key(&app);
+  Keyboard key{&app};
   key.addAccelerator('q');
 
   // Set the keyboard object as main widget
diff --git a/examples/listbox.cpp b/examples/listbox.cpp
index 14b3f8b8..72480b6a 100644
--- a/examples/listbox.cpp
+++ b/examples/listbox.cpp
@@ -112,18 +112,18 @@ Listbox::Listbox (FWidget* parent)
 
   // listbox 1
   //----------
-  list1.setGeometry(FPoint(2, 1), FSize(18, 10));
+  list1.setGeometry(FPoint{2, 1}, FSize{18, 10});
   list1.setText ("FListBoxItem");
 
   for (int i{1}; i < 30; i++)
-    list1.insert (L"----- " + (FString() << i) + L" -----");
+    list1.insert (L"----- " + (FString{} << i) + L" -----");
 
   // listbox 2
   //----------
   for (int i{1}; i <= 15; i++)
     double_list.push_back(2 * double(i) + (double(i) / 100));
 
-  list2.setGeometry(FPoint(21, 1), FSize(10, 10));
+  list2.setGeometry(FPoint{21, 1}, FSize{10, 10});
   list2.setText ("double");
 
   //
@@ -146,11 +146,11 @@ Listbox::Listbox (FWidget* parent)
   TLD["gov"] = "Government";
 
   list3.insert (TLD.begin(), TLD.end(), mapToString);
-  list3.setGeometry(FPoint(32, 1), FSize(21, 10));
+  list3.setGeometry(FPoint{32, 1}, FSize{21, 10});
   list3.setText ("key: value");
 
   // Quit button
-  Quit.setGeometry(FPoint(42, 12), FSize(10, 1));
+  Quit.setGeometry(FPoint{42, 12}, FSize{10, 1});
   Quit.setText (L"&Quit");
 
   // Add quit button function callback
@@ -184,8 +184,8 @@ int main (int argc, char* argv[])
   // Create main dialog object
   Listbox d(&app);
   d.setText (L"Listbox");
-  d.setGeometry ( FPoint(int(1 + (app.getWidth() - 56) / 2), 5)
-                , FSize(56, 16) );
+  d.setGeometry ( FPoint{int(1 + (app.getWidth() - 56) / 2), 5}
+                , FSize{56, 16} );
   d.setShadow();
 
   // Set dialog d as main widget
diff --git a/examples/listview.cpp b/examples/listview.cpp
index d2dea7a6..39cf8c71 100644
--- a/examples/listview.cpp
+++ b/examples/listview.cpp
@@ -71,7 +71,7 @@ Listview::Listview (finalcut::FWidget* parent)
   : finalcut::FDialog(parent)
 {
   // Set FListView geometry
-  listView.setGeometry(FPoint(2, 1), FSize(33, 14));
+  listView.setGeometry(FPoint{2, 1}, FSize{33, 14});
 
   // Add columns to the view
   listView.addColumn ("City");
@@ -104,7 +104,7 @@ Listview::Listview (finalcut::FWidget* parent)
   populate();
 
   // Quit button
-  Quit.setGeometry(FPoint(24, 16), FSize(10, 1));
+  Quit.setGeometry(FPoint{24, 16}, FSize{10, 1});
   Quit.setText (L"&Quit");
 
   // Add some function callbacks
@@ -212,8 +212,8 @@ int main (int argc, char* argv[])
   // Create main dialog object
   Listview d(&app);
   d.setText (L"Weather data");
-  d.setGeometry ( FPoint(int(1 + (app.getWidth() - 37) / 2), 3)
-                , FSize(37, 20) );
+  d.setGeometry ( FPoint{int(1 + (app.getWidth() - 37) / 2), 3}
+                , FSize{37, 20} );
   d.setShadow();
 
   // Set dialog d as main widget
diff --git a/examples/mandelbrot.cpp b/examples/mandelbrot.cpp
index 4cd3e001..4c1a91ea 100644
--- a/examples/mandelbrot.cpp
+++ b/examples/mandelbrot.cpp
@@ -89,7 +89,7 @@ void Mandelbrot::draw()
   while ( y0 < y_max && current_line < Lines )
   {
     current_line++;
-    print() << FPoint(xoffset, yoffset + current_line);
+    print() << FPoint{xoffset, yoffset + current_line};
     double x0 = x_min;
 
     while ( x0 < x_max )
@@ -152,7 +152,7 @@ void Mandelbrot::adjustSize()
   if ( w > 10 )
     w -= 10;
 
-  setGeometry(FPoint(6, 1), FSize(w, h), false);
+  setGeometry(FPoint{6, 1}, FSize{w, h}, false);
   finalcut::FDialog::adjustSize();
 }
 
@@ -162,11 +162,11 @@ void Mandelbrot::adjustSize()
 int main (int argc, char* argv[])
 {
   // Create the application object
-  finalcut::FApplication app(argc, argv);
+  finalcut::FApplication app{argc, argv};
 
   // Create a simple dialog box
-  Mandelbrot mb(&app);
-  mb.setGeometry (FPoint(6, 1), FSize(70, 23));
+  Mandelbrot mb{&app};
+  mb.setGeometry (FPoint{6, 1}, FSize{70, 23});
   mb.setShadow();
 
   // Set the mandelbrot object as main widget
diff --git a/examples/menu.cpp b/examples/menu.cpp
index c043db21..f8a21add 100644
--- a/examples/menu.cpp
+++ b/examples/menu.cpp
@@ -140,19 +140,19 @@ Menu::Menu (finalcut::FWidget* parent)
   // Headline labels
   Headline1 << " Key ";
   Headline1.ignorePadding();
-  Headline1.setGeometry(FPoint(3, 2), FSize(5, 1));
+  Headline1.setGeometry(FPoint{3, 2}, FSize{5, 1});
   Headline1.setEmphasis();
 
   Headline2 << " Function ";
   Headline2.ignorePadding();
-  Headline2.setGeometry(FPoint(19, 2), FSize(10, 1));
+  Headline2.setGeometry(FPoint{19, 2}, FSize{10, 1});
   Headline2.setEmphasis();
 
   // Info label
   Info << "<F10>            Activate menu bar\n"
        << "<Ctrl>+<Space>   Activate menu bar\n"
        << "<Meta>+<X>       Exit";
-  Info.setGeometry(FPoint(2, 1), FSize(36, 3));
+  Info.setGeometry(FPoint{2, 1}, FSize{36, 3});
 }
 
 //----------------------------------------------------------------------
@@ -320,13 +320,13 @@ void Menu::cb_message (finalcut::FWidget* widget, const FDataPtr)
 int main (int argc, char* argv[])
 {
   // Create the application object
-  finalcut::FApplication app (argc, argv);
+  finalcut::FApplication app {argc, argv};
 
   // Create main dialog object
-  Menu main_dlg (&app);
+  Menu main_dlg {&app};
   main_dlg.setText ("Menu example");
-  main_dlg.setGeometry ( FPoint(int(1 + (app.getWidth() - 40) / 2), 2)
-                       , FSize(40, 6) );
+  main_dlg.setGeometry ( FPoint{int(1 + (app.getWidth() - 40) / 2), 2}
+                       , FSize{40, 6} );
   main_dlg.setShadow();
 
   // Set dialog main_dlg as main widget
diff --git a/examples/mouse.cpp b/examples/mouse.cpp
index 8517ad04..708005f8 100644
--- a/examples/mouse.cpp
+++ b/examples/mouse.cpp
@@ -74,8 +74,8 @@ class ColorChooser final : public finalcut::FWidget
 ColorChooser::ColorChooser (finalcut::FWidget* parent)
   : FWidget(parent)
 {
-  FWidget::setSize (FSize(8, 12));
-  setFixedSize (FSize(8, 12));
+  FWidget::setSize (FSize{8, 12});
+  setFixedSize (FSize{8, 12});
   unsetFocusable();
 
   if ( parent )
@@ -89,7 +89,7 @@ ColorChooser::ColorChooser (finalcut::FWidget* parent)
   }
 
   // Text label
-  headline.setGeometry (FPoint(1, 1), FSize(8, 1));
+  headline.setGeometry (FPoint{1, 1}, FSize{8, 1});
   headline.setEmphasis();
   headline.setAlignment (fc::alignCenter);
   headline << "Color";
@@ -127,7 +127,7 @@ void ColorChooser::draw()
 
   for (FColor c{0}; c < 16; c++)
   {
-    print() << FPoint(2 + (c / 8) * 3, 3 + c % 8);
+    print() << FPoint{2 + (c / 8) * 3, 3 + c % 8};
 
     if ( c < 6 )
       setColor (fc::LightGray, c);
@@ -148,7 +148,7 @@ void ColorChooser::draw()
 //----------------------------------------------------------------------
 void ColorChooser::drawBorder()
 {
-  finalcut::drawBorder (this, FRect(FPoint(1, 2), FSize(8, 10)));
+  finalcut::drawBorder (this, FRect{FPoint{1, 2}, FSize{8, 10}});
 }
 
 //----------------------------------------------------------------------
@@ -228,8 +228,8 @@ class Brushes final : public finalcut::FWidget
 Brushes::Brushes (finalcut::FWidget* parent)
   : FWidget(parent)
 {
-  FWidget::setSize (FSize(8, 4));
-  setFixedSize (FSize(8, 4));
+  FWidget::setSize (FSize{8, 4});
+  setFixedSize (FSize{8, 4});
   unsetFocusable();
 
   if ( parent )
@@ -243,7 +243,7 @@ Brushes::Brushes (finalcut::FWidget* parent)
   }
 
   // Text label
-  headline.setGeometry(FPoint(1, 1), FSize(8, 1));
+  headline.setGeometry(FPoint{1, 1}, FSize{8, 1});
   headline.setEmphasis();
   headline.setAlignment (fc::alignCenter);
   headline << "Brush";
@@ -267,24 +267,24 @@ void Brushes::draw()
   int pos{0};
   setColor();
   drawBorder();
-  print() << FPoint(2, 3)
-          << FColorPair(fg_color, bg_color) << "   "
-          << finalcut::FString(3, fc::MediumShade);
+  print() << FPoint{2, 3}
+          << FColorPair{fg_color, bg_color} << "   "
+          << finalcut::FString{3, fc::MediumShade};
 
   if ( brush != L' ' )
     pos = 3;
 
   setColor();
-  print() << FPoint(3 + pos, 2)
+  print() << FPoint{3 + pos, 2}
           << fc::BlackDownPointingTriangle
-          << FPoint(3 + pos, 4)
+          << FPoint{3 + pos, 4}
           << fc::BlackUpPointingTriangle;
 }
 
 //----------------------------------------------------------------------
 void Brushes::drawBorder()
 {
-  finalcut::drawBorder (this, FRect(FPoint(1, 2), FSize(8, 3)));
+  finalcut::drawBorder (this, FRect{FPoint{1, 2}, FSize{8, 3}});
 }
 
 //----------------------------------------------------------------------
@@ -382,17 +382,17 @@ MouseDraw::MouseDraw (finalcut::FWidget* parent)
   : finalcut::FDialog(parent)
 {
   FDialog::setText ("Drawing with the mouse");
-  c_chooser.setPos (FPoint(1, 1));
+  c_chooser.setPos (FPoint{1, 1});
   c_chooser.addCallback
   (
     "clicked",
     F_METHOD_CALLBACK (this, &MouseDraw::cb_colorChanged)
   );
 
-  brush.setPos (FPoint(1, 12));
+  brush.setPos (FPoint{1, 12});
 
-  FSize no_shadow(0, 0);
-  finalcut::FRect scroll_geometry(0, 0, 1, 1);
+  FSize no_shadow{0, 0};
+  finalcut::FRect scroll_geometry{0, 0, 1, 1};
   createArea (scroll_geometry, no_shadow, canvas);
 }
 
@@ -406,8 +406,8 @@ void MouseDraw::setGeometry ( const FPoint& p, const FSize& s, bool adjust)
   finalcut::FDialog::setGeometry (p, s, adjust);
   const std::size_t w = s.getWidth();
   const std::size_t h = s.getHeight();
-  const finalcut::FRect scroll_geometry (FPoint(0, 0), FSize(w - 11, h - 3));
-  const FSize no_shadow(0, 0);
+  const finalcut::FRect scroll_geometry (FPoint{0, 0}, FSize{w - 11, h - 3});
+  const FSize no_shadow{0, 0};
   const int old_w = canvas->width;
   const int old_h = canvas->height;
   resizeArea (scroll_geometry, no_shadow, canvas);
@@ -451,24 +451,24 @@ void MouseDraw::draw()
   {
     for (int y{2}; y < y_max; y++)
     {
-      print() << FPoint(10, y)
+      print() << FPoint{10, y}
               << fc::NF_rev_border_line_right;
     }
 
-    print() << FPoint(10, y_max)
+    print() << FPoint{10, y_max}
             << fc::NF_rev_border_corner_lower_right;
   }
   else
   {
-    print() << FPoint(10, 2)
+    print() << FPoint{10, 2}
             << fc::BoxDrawingsDownAndHorizontal;
 
     for (int y{3}; y < y_max; y++)
     {
-      print() << FPoint(10, y) << fc::BoxDrawingsVertical;
+      print() << FPoint{10, y} << fc::BoxDrawingsVertical;
     }
 
-    print() << FPoint(10, y_max)
+    print() << FPoint{10, y_max}
             << fc::BoxDrawingsUpAndHorizontal;
   }
 
@@ -541,7 +541,7 @@ void MouseDraw::adjustSize()
   const std::size_t h{18};
   const int x = 1 + int((getParentWidget()->getWidth() - w) / 2);
   const int y = 1 + int((getParentWidget()->getHeight() - h) / 2);
-  setGeometry (FPoint(x, y), FSize(w, h), false);
+  setGeometry (FPoint{x, y}, FSize{w, h}, false);
   finalcut::FDialog::adjustSize();
 }
 
@@ -588,11 +588,11 @@ void MouseDraw::cb_colorChanged (const finalcut::FWidget*, const FDataPtr)
 int main (int argc, char* argv[])
 {
   // Create the application object
-  finalcut::FApplication app(argc, argv);
+  finalcut::FApplication app{argc, argv};
 
   // Create a simple dialog box
-  MouseDraw mouse_draw(&app);
-  mouse_draw.setGeometry (FPoint(12, 4), FSize(60, 18));
+  MouseDraw mouse_draw{&app};
+  mouse_draw.setGeometry (FPoint{12, 4}, FSize{60, 18});
 
   // Set dialog object mouse_draw as main widget
   finalcut::FWidget::setMainWidget(&mouse_draw);
diff --git a/examples/opti-move.cpp b/examples/opti-move.cpp
index 7df6e2de..ebc78933 100644
--- a/examples/opti-move.cpp
+++ b/examples/opti-move.cpp
@@ -139,7 +139,7 @@ void move (int xold, int yold, int xnew, int ynew)
 int main (int argc, char* argv[])
 {
   // Create the application object
-  finalcut::FApplication TermApp(argc, argv);
+  finalcut::FApplication TermApp{argc, argv};
 
   // Pointer to the global virtual terminal object
   app = &TermApp;
@@ -147,7 +147,7 @@ int main (int argc, char* argv[])
   // Get screen dimension
   int xmax = int(TermApp.getDesktopWidth() - 1);
   int ymax = int(TermApp.getDesktopHeight() - 1);
-  finalcut::FString line(std::size_t(xmax) + 1, '-');
+  finalcut::FString line{std::size_t(xmax) + 1, '-'};
 
   // Place the cursor in the upper left corner
   TermApp.setTermXY(0, 0);
diff --git a/examples/rotozoomer.cpp b/examples/rotozoomer.cpp
index b752af27..c342f22c 100644
--- a/examples/rotozoomer.cpp
+++ b/examples/rotozoomer.cpp
@@ -153,18 +153,18 @@ void RotoZoomer::rotozoomer (double cx, double cy, double r, double a)
   {
     Cx = Ax;
     Cy = Ay;
-    print() << FPoint(2, 3 + y);
+    print() << FPoint{2, 3 + y};
 
     for (int x = 0; x < Cols; x++)
     {
       wchar_t ch = data[((Cy >> 14) & 0xf) + ((Cx >> 10) & 0xf0)];
 
       if ( ch == '+' )
-        print() << finalcut::FColorPair(fc::Black, fc::Red);
+        print() << finalcut::FColorPair{fc::Black, fc::Red};
       else if ( ch == 'x' )
-        print() << finalcut::FColorPair(fc::Black, fc::Cyan);
+        print() << finalcut::FColorPair{fc::Black, fc::Cyan};
       else
-        print() << finalcut::FColorPair(fc::Black, fc::White);
+        print() << finalcut::FColorPair{fc::Black, fc::White};
 
       print() << ch;
       Cx += dxdx;
@@ -190,9 +190,9 @@ void RotoZoomer::generateReport()
   time_str << double(elapsed_ms) / 1000 << "ms";
   fps_str << double(loops) * 1000.0 / double(elapsed_ms);
 
-  rep << finalcut::FString(55, '-') << "\n"
+  rep << finalcut::FString{55, '-'} << "\n"
       << "Terminal            Size    Time      Loops  Frame rate\n"
-      << finalcut::FString(55, '-') << "\n"
+      << finalcut::FString{55, '-'} << "\n"
       << std::left << std::setw(20) << term_type
       << std::setw(8) << dimension_str
       << std::setw(10) << time_str
@@ -276,7 +276,7 @@ void RotoZoomer::adjustSize()
     if ( w > 8 )
       w -= 8;
 
-    setGeometry(FPoint(5, 1), FSize(w, h), false);
+    setGeometry(FPoint{5, 1}, FSize{w, h}, false);
   }
 
   finalcut::FDialog::adjustSize();
@@ -286,13 +286,13 @@ void RotoZoomer::adjustSize()
 //                               main part
 //----------------------------------------------------------------------
 int main (int argc, char* argv[])
-{  
+{
   bool benchmark{false};
   finalcut::FString report{};
   int quit_code{0};
 
   if ( argv[1] && ( strcmp(argv[1], "--help") == 0
-                  || strcmp(argv[1], "-h") == 0 ) )
+                 || strcmp(argv[1], "-h") == 0 ) )
   {
     std::cout << "RotoZoomer options:\n"
               << "  -b, --benchmark               "
@@ -305,17 +305,17 @@ int main (int argc, char* argv[])
   }
 
   {  // Create the application object in this scope
-    finalcut::FApplication app(argc, argv);
+    finalcut::FApplication app{argc, argv};
     app.setNonBlockingRead();
 
     // Create a simple dialog box
     constexpr int iterations = 314;
-    RotoZoomer roto(&app, benchmark, iterations);
+    RotoZoomer roto{&app, benchmark, iterations};
 
     if ( benchmark )
-      roto.setGeometry (FPoint(1, 1), FSize(80, 24));
+      roto.setGeometry (FPoint{1, 1}, FSize{80, 24});
     else
-      roto.setGeometry (FPoint(5, 1), FSize(72, 23));
+      roto.setGeometry (FPoint{5, 1}, FSize{72, 23});
 
     roto.setShadow();
 
diff --git a/examples/scrollview.cpp b/examples/scrollview.cpp
index da9bf11b..9ad2c02e 100644
--- a/examples/scrollview.cpp
+++ b/examples/scrollview.cpp
@@ -75,14 +75,14 @@ Scrollview::Scrollview (finalcut::FWidget* parent)
   : finalcut::FScrollView(parent)
 {
   // Sets the navigation button geometry
-  go_east.setGeometry (FPoint(1, 1), FSize(5, 1));
-  go_south.setGeometry ( FPoint(int(getScrollWidth()) - 5, 1)
-                       , FSize(5, 1) );
-  go_west.setGeometry ( FPoint( int(getScrollWidth()) - 5
-                              , int(getScrollHeight()) - 2 )
-                      , FSize(5, 1) );
-  go_north.setGeometry ( FPoint(1, int(getScrollHeight()) - 2)
-                       , FSize(5, 1) );
+  go_east.setGeometry (FPoint{1, 1}, FSize{5, 1});
+  go_south.setGeometry ( FPoint{int(getScrollWidth()) - 5, 1}
+                       , FSize{5, 1} );
+  go_west.setGeometry ( FPoint{ int(getScrollWidth()) - 5
+                              , int(getScrollHeight()) - 2 }
+                      , FSize{5, 1} );
+  go_north.setGeometry ( FPoint{1, int(getScrollHeight()) - 2}
+                       , FSize{5, 1} );
 
   // Add scroll function callbacks to the buttons
   go_east.addCallback
@@ -120,9 +120,9 @@ void Scrollview::setScrollSize (const FSize& size)
   FScrollView::setScrollSize (size);
   const int width = int(size.getWidth());
   const int height = int(size.getHeight());
-  go_south.setPos (FPoint(width - 5, 1));
-  go_west.setPos (FPoint(width - 5, height - 1));
-  go_north.setPos (FPoint(1, height - 1));
+  go_south.setPos (FPoint{width - 5, 1});
+  go_west.setPos (FPoint{width - 5, height - 1});
+  go_north.setPos (FPoint{1, height - 1});
 }
 
 //----------------------------------------------------------------------
@@ -137,7 +137,7 @@ void Scrollview::draw()
 
   for (int y{0}; y < int(getScrollHeight()); y++)
   {
-    print() << FPoint(1, 1 + y);
+    print() << FPoint{1, 1 + y};
 
     for (int x{0}; x < int(getScrollWidth()); x++)
       print (32 + ((x + y) % 0x5f));
@@ -216,15 +216,15 @@ class Scrollviewdemo final : public finalcut::FDialog
 Scrollviewdemo::Scrollviewdemo (finalcut::FWidget* parent)
   : finalcut::FDialog(parent)
 {
-  FDialog::setGeometry (FPoint(16, 3), FSize(50, 19));
+  FDialog::setGeometry (FPoint{16, 3}, FSize{50, 19});
   FDialog::setText ("Scrolling viewport example");
 
   // The scrolling viewport widget
-  sview.setGeometry(FPoint(3, 2), FSize(44, 12));
-  sview.setScrollSize(FSize(188, 124));
+  sview.setGeometry(FPoint{3, 2}, FSize{44, 12});
+  sview.setScrollSize(FSize{188, 124});
 
   // Quit button
-  quit_btn.setGeometry(FPoint(37, 15), FSize(10, 1));
+  quit_btn.setGeometry(FPoint{37, 15}, FSize{10, 1});
 
   // Add function callback
   quit_btn.addCallback
@@ -234,7 +234,7 @@ Scrollviewdemo::Scrollviewdemo (finalcut::FWidget* parent)
   );
 
   // Text label
-  label.setGeometry(FPoint(2, 1), FSize(46, 1));
+  label.setGeometry(FPoint{2, 1}, FSize{46, 1});
   label.setEmphasis();
   label << L"Use scrollbars to change the viewport position";
 }
@@ -262,10 +262,10 @@ void Scrollviewdemo::onClose (finalcut::FCloseEvent* ev)
 int main (int argc, char* argv[])
 {
   // Create the application object
-  finalcut::FApplication app(argc, argv);
+  finalcut::FApplication app{argc, argv};
 
   // Create a simple dialog box
-  Scrollviewdemo svdemo(&app);
+  Scrollviewdemo svdemo{&app};
 
   // Set dialog main_dlg as main widget
   finalcut::FWidget::setMainWidget(&svdemo);
diff --git a/examples/term-attributes.cpp b/examples/term-attributes.cpp
index b8018cb4..5e0bb7c1 100644
--- a/examples/term-attributes.cpp
+++ b/examples/term-attributes.cpp
@@ -76,14 +76,14 @@ AttribDlg::AttribDlg (finalcut::FWidget* parent)
   : finalcut::FDialog(parent)
 {
   FDialog::setText ( "A terminal attributes test ("
-                   + finalcut::FString(getTermType())
+                   + finalcut::FString{getTermType()}
                    + ")");
 
-  next_button.setGeometry ( FPoint(int(getWidth()) - 13, int(getHeight()) - 4)
-                          , FSize(10, 1) );
+  next_button.setGeometry ( FPoint{int(getWidth()) - 13, int(getHeight()) - 4}
+                          , FSize{10, 1} );
   next_button.addAccelerator (fc::Fkey_right);
-  back_button.setGeometry ( FPoint(int(getWidth()) - 25, int(getHeight()) - 4)
-                          , FSize(10, 1) );
+  back_button.setGeometry ( FPoint{int(getWidth()) - 25, int(getHeight()) - 4}
+                          , FSize{10, 1} );
   back_button.addAccelerator (fc::Fkey_left);
 
   // Add function callbacks
@@ -186,11 +186,11 @@ void AttribDlg::adjustSize()
   if ( y < 1 )
     y = 1;
 
-  setGeometry(FPoint(x, y), FSize(69, 21), false);
-  next_button.setGeometry ( FPoint(int(getWidth()) - 13, int(getHeight()) - 4)
-                          , FSize(10, 1), false );
-  back_button.setGeometry ( FPoint(int(getWidth()) - 25, int(getHeight()) - 4)
-                          , FSize(10, 1), false );
+  setGeometry(FPoint{x, y}, FSize{69, 21}, false);
+  next_button.setGeometry ( FPoint{int(getWidth()) - 13, int(getHeight()) - 4}
+                          , FSize{10, 1}, false );
+  back_button.setGeometry ( FPoint{int(getWidth()) - 25, int(getHeight()) - 4}
+                          , FSize{10, 1}, false );
   finalcut::FDialog::adjustSize();
 }
 
@@ -260,7 +260,7 @@ void AttribDemo::printColorLine()
 
   for (FColor color{0}; color < last_color; color++)
   {
-    print() << FColorPair(color, parent->getBGColor()) << " # ";
+    print() << FColorPair{color, parent->getBGColor()} << " # ";
   }
 }
 
@@ -273,7 +273,7 @@ void AttribDemo::printAltCharset()
   if ( ! isMonochron() )
     setColor (wc.label_fg, wc.label_bg);
 
-  print() << FPoint(1, 1) << "alternate charset: ";
+  print() << FPoint{1, 1} << "alternate charset: ";
 
   if ( parent->getBGColor() == fc::Default )
   {
@@ -439,7 +439,7 @@ void AttribDemo::draw()
 
   for (std::size_t y{0}; y < getParentWidget()->getHeight() - 7; y++)
   {
-    print() << FPoint(1, 2 + int(y));
+    print() << FPoint{1, 2 + int(y)};
 
     if ( ! isMonochron() )
       setColor (wc.label_fg, wc.label_bg);
@@ -451,7 +451,7 @@ void AttribDemo::draw()
   if ( ! isMonochron() )
     setColor(wc.label_fg, wc.label_bg);
 
-  print() << FPoint(1, 15);
+  print() << FPoint{1, 15};
   const FColor bg = static_cast<AttribDlg*>(getParent())->getBGColor();
   print (" Background color:");
 
@@ -460,7 +460,7 @@ void AttribDemo::draw()
   else
     printf ( " %d", bg);
 
-  print() << FPoint(16, 17) << "Change background color ->";
+  print() << FPoint{16, 17} << "Change background color ->";
 }
 
 
@@ -470,19 +470,19 @@ void AttribDemo::draw()
 int main (int argc, char* argv[])
 {
   // Create the application object
-  finalcut::FApplication app (argc, argv);
+  finalcut::FApplication app {argc, argv};
 
   // Create a dialog box object.
   // This object will be automatically deleted by
   // the parent object "app" (FObject destructor).
-  AttribDlg dialog(&app);
+  AttribDlg dialog{&app};
 
-  dialog.setGeometry (FPoint(6, 2), FSize(69, 21));
+  dialog.setGeometry (FPoint{6, 2}, FSize{69, 21});
   dialog.setShadow();
 
   // Create the attribute demo widget as a child object from the dialog
   AttribDemo demo(&dialog);
-  demo.setGeometry (FPoint(1, 1), FSize(67, 19));
+  demo.setGeometry (FPoint{1, 1}, FSize{67, 19});
 
   // Set the dialog object as main widget
   finalcut::FWidget::setMainWidget(&dialog);
diff --git a/examples/termcap.cpp b/examples/termcap.cpp
index ecd9b647..d01dcfbd 100644
--- a/examples/termcap.cpp
+++ b/examples/termcap.cpp
@@ -297,7 +297,7 @@ void string()
 int main (int argc, char* argv[])
 {
   const bool disable_alt_screen{true};
-  finalcut::FApplication TermApp (argc, argv, disable_alt_screen);
+  finalcut::FApplication TermApp {argc, argv, disable_alt_screen};
 
   std::cout << "--------\r\nFTermcap\r\n--------\r\n\n";
   std::cout << "Terminal: " << TermApp.getTermType() << "\r\n";
diff --git a/examples/timer.cpp b/examples/timer.cpp
index a041d0c6..5c162394 100644
--- a/examples/timer.cpp
+++ b/examples/timer.cpp
@@ -61,11 +61,11 @@ Timer::Timer (finalcut::FWidget* parent)
 //----------------------------------------------------------------------
 void Timer::draw()
 {
-  print() << finalcut::FPoint(1, 1)
+  print() << finalcut::FPoint{1, 1}
           << "---------------\n"
           << "Press Q to quit\n"
           << "---------------\n";
-  setAreaCursor (finalcut::FPoint(1, 4), true, getVirtualDesktop());
+  setAreaCursor ({1, 4}, true, getVirtualDesktop());
 }
 
 //----------------------------------------------------------------------
@@ -77,14 +77,13 @@ void Timer::onTimer (finalcut::FTimerEvent* ev)
   if ( getPrintPos().getY() == int(getDesktopHeight()) )
     is_last_line = true;
 
-  print() << finalcut::FColorPair (FColor(1 + timer_id))
+  print() << finalcut::FColorPair {FColor(1 + timer_id)}
           << "Timer event, id " << timer_id << '\n';
 
   if ( is_last_line )
     scrollAreaForward (getVirtualDesktop());
 
-  setAreaCursor ( finalcut::FPoint(1, getPrintPos().getY())
-                , true, getVirtualDesktop() );
+  setAreaCursor ({1, getPrintPos().getY()}, true, getVirtualDesktop());
 }
 
 //----------------------------------------------------------------------
@@ -101,12 +100,12 @@ void Timer::onAccel (finalcut::FAccelEvent* ev)
 int main (int argc, char* argv[])
 {
   // Create the application object
-  finalcut::FApplication app(argc, argv);
+  finalcut::FApplication app{argc, argv};
   app.setForegroundColor(fc::Default);
   app.setBackgroundColor(fc::Default);
 
   // Create a timer object t
-  Timer t(&app);
+  Timer t{&app};
   t.addAccelerator('q');
 
   // Set the timer object t as main widget
diff --git a/examples/transparent.cpp b/examples/transparent.cpp
index 57a16a16..bec51c3e 100644
--- a/examples/transparent.cpp
+++ b/examples/transparent.cpp
@@ -95,31 +95,31 @@ void Transparent::draw()
   if ( type == shadow )
   {
     const auto& wc = getFWidgetColors();
-    print() << FColorPair (wc.shadow_bg, wc.shadow_fg)
-            << FStyle (fc::ColorOverlay);
+    print() << FColorPair {wc.shadow_bg, wc.shadow_fg}
+            << FStyle {fc::ColorOverlay};
   }
   else if ( type == inherit_background )
   {
     if ( getMaxColor() > 8 )
-      print() << FColorPair (fc::Blue, fc::Black);
+      print() << FColorPair {fc::Blue, fc::Black};
     else
-      print() << FColorPair (fc::Green, fc::Black);
+      print() << FColorPair {fc::Green, fc::Black};
 
-    print() << FStyle (fc::InheritBackground);
+    print() << FStyle {fc::InheritBackground};
   }
   else
-    print() << FStyle (fc::Transparent);
+    print() << FStyle {fc::Transparent};
 
-  const finalcut::FString line(getClientWidth(), '.');
+  const finalcut::FString line{getClientWidth(), '.'};
 
   // Fill window area
   for (int n{1}; n <= int(getClientHeight()); n++)
   {
-    print() << FPoint(2, 2 + n)
+    print() << FPoint{2, 2 + n}
             << line;
   }
 
-  print() <<  FStyle (fc::Reset);
+  print() <<  FStyle{fc::Reset};
 }
 
 //----------------------------------------------------------------------
@@ -199,17 +199,17 @@ MainWindow::MainWindow (finalcut::FWidget* parent)
   // is not required in this class and would result in a double free.
   transpwin = new Transparent(this);
   transpwin->setText("transparent");
-  transpwin->setGeometry (FPoint(6, 3), FSize(29, 12));
+  transpwin->setGeometry (FPoint{6, 3}, FSize{29, 12});
   transpwin->unsetTransparentShadow();
 
   shadowwin = new Transparent(this, Transparent::shadow);
   shadowwin->setText("shadow");
-  shadowwin->setGeometry (FPoint(46, 11), FSize(29, 12));
+  shadowwin->setGeometry (FPoint{46, 11}, FSize{29, 12});
   shadowwin->unsetTransparentShadow();
 
   ibg = new Transparent(this, Transparent::inherit_background);
   ibg->setText("inherit background");
-  ibg->setGeometry (FPoint(42, 3), FSize(29, 7));
+  ibg->setGeometry (FPoint{42, 3}, FSize{29, 7});
   ibg->unsetTransparentShadow();
 
   // Set statusbar text for this window
@@ -232,8 +232,8 @@ void MainWindow::draw()
     setReverse(true);
 
   setColor();
-  print() << FPoint(2, 4) << line1;
-  print() << FPoint(2, 5) << line2;
+  print() << FPoint{2, 4} << line1;
+  print() << FPoint{2, 5} << line2;
 
   if ( isMonochron() )
     setReverse(false);
@@ -273,13 +273,13 @@ void MainWindow::onTimer (finalcut::FTimerEvent*)
 int main (int argc, char* argv[])
 {
   // Create the application object
-  finalcut::FApplication app (argc, argv);
+  finalcut::FApplication app {argc, argv};
   app.setNonBlockingRead();
 
   // Create main dialog object
-  MainWindow main_dlg (&app);
+  MainWindow main_dlg {&app};
   main_dlg.setText ("non-transparent");
-  main_dlg.setGeometry (FPoint(8, 16), FSize(26, 7));
+  main_dlg.setGeometry (FPoint{8, 16}, FSize{26, 7});
 
   // Set dialog main_dlg as main widget
   finalcut::FWidget::setMainWidget (&main_dlg);
diff --git a/examples/treeview.cpp b/examples/treeview.cpp
index 261c8204..c0ec19bc 100644
--- a/examples/treeview.cpp
+++ b/examples/treeview.cpp
@@ -329,7 +329,7 @@ Treeview::Treeview (finalcut::FWidget* parent)
   : finalcut::FDialog(parent)
 {
   // Set FListView geometry
-  listView.setGeometry(FPoint(2, 1), FSize(53, 14));
+  listView.setGeometry(FPoint{2, 1}, FSize{53, 14});
 
   // Add columns to the view
   listView.addColumn ("Name", 23);
@@ -379,7 +379,7 @@ Treeview::Treeview (finalcut::FWidget* parent)
   }
 
   // Quit button
-  Quit.setGeometry(FPoint(24, 16), FSize(10, 1));
+  Quit.setGeometry(FPoint{24, 16}, FSize{10, 1});
   Quit.setText (L"&Quit");
 
   // Callback function
@@ -431,13 +431,13 @@ void Treeview::onClose (finalcut::FCloseEvent* ev)
 int main (int argc, char* argv[])
 {
   // Create the application object
-  finalcut::FApplication app(argc, argv);
+  finalcut::FApplication app{argc, argv};
 
   // Create main dialog object
-  Treeview d(&app);
+  Treeview d{&app};
   d.setText (L"Continents");
-  d.setGeometry ( FPoint(int(1 + (app.getWidth() - 57) / 2), 3)
-                , FSize(57, 20) );
+  d.setGeometry ( FPoint{int(1 + (app.getWidth() - 57) / 2), 3}
+                , FSize{57, 20} );
   d.setShadow();
 
   // Set dialog d as main widget
diff --git a/examples/ui.cpp b/examples/ui.cpp
index 268cebdd..1abf5cf4 100644
--- a/examples/ui.cpp
+++ b/examples/ui.cpp
@@ -81,26 +81,26 @@ ProgressDialog::ProgressDialog (finalcut::FWidget* parent)
   // Dialog settings
   //   Avoids calling a virtual function from the constructor
   //   (CERT, OOP50-CPP)
-  FDialog::setGeometry ( FPoint(int((getParentWidget()->getWidth() - 40) / 2), 7)
-                       , FSize(40, 10) );
+  FDialog::setGeometry ( FPoint{int((getParentWidget()->getWidth() - 40) / 2), 7}
+                       , FSize{40, 10} );
   FDialog::setText("Progress bar");
   //setModal();
 
   reset.setText("&Reset");
   reset.setStatusbarMessage ("Reset the progress bar");
-  reset.setGeometry(FPoint(2, 6), FSize(8, 1), false);
+  reset.setGeometry(FPoint{2, 6}, FSize{8, 1}, false);
   reset.setDisable();
 
   more.setText("&More");
   more.setStatusbarMessage ("Increases the progress bar position");
-  more.setGeometry(FPoint(15, 6), FSize(8, 1), false);
+  more.setGeometry(FPoint{15, 6}, FSize{8, 1}, false);
   more.setDisable();
 
   quit.setText("E&xit");
-  quit.setGeometry(FPoint(28, 6), FSize(8, 1), false);
+  quit.setGeometry(FPoint{28, 6}, FSize{8, 1}, false);
   quit.setDisable();
 
-  progressBar.setGeometry(FPoint(2, 3), FSize(34, 1), false);
+  progressBar.setGeometry(FPoint{2, 3}, FSize{34, 1}, false);
   //progressBar.setPercentage(78);
 
   using namespace std::placeholders;
@@ -221,8 +221,8 @@ TextWindow::TextWindow (finalcut::FWidget* parent)
   : finalcut::FDialog(parent)
 {
   scrollText.ignorePadding();
-  scrollText.setGeometry (FPoint(1, 2), FSize(getWidth(), getHeight() - 1));
-  setMinimumSize (FSize(51, 6));
+  scrollText.setGeometry (FPoint{1, 2}, FSize{getWidth(), getHeight() - 1});
+  setMinimumSize (FSize{51, 6});
   scrollText.setFocus();
   scrollText.insert(" -----------------------------------------------\n"
                     " line 1\n"
@@ -248,7 +248,7 @@ void TextWindow::append (const finalcut::FString& str)
 void TextWindow::adjustSize()
 {
   finalcut::FDialog::adjustSize();
-  scrollText.setGeometry (FPoint(1, 2), FSize(getWidth(), getHeight() - 1));
+  scrollText.setGeometry (FPoint{1, 2}, FSize(getWidth(), getHeight() - 1));
 }
 
 
@@ -563,16 +563,16 @@ void MyDialog::initWidgets()
   initToggleButtons();
 
   // A text input field
-  myLineEdit.setGeometry(FPoint(22, 1), FSize(10, 1));
+  myLineEdit.setGeometry(FPoint{22, 1}, FSize{10, 1});
   myLineEdit.setLabelText (L"&Input");
   myLineEdit.setStatusbarMessage ("Press Enter to set the title");
-  myLineEdit << finalcut::FString("EnTry").toLower();
+  myLineEdit << finalcut::FString{"EnTry"}.toLower();
 
   // Buttons
   initButtons();
 
   // A multiple selection listbox
-  myList.setGeometry(FPoint(38, 1), FSize(14, 17));
+  myList.setGeometry(FPoint{38, 1}, FSize{14, 17});
   myList.setText ("Items");
 
   myList.setStatusbarMessage ("99 items in a list");
@@ -580,7 +580,7 @@ void MyDialog::initWidgets()
   myList.reserve(100);
 
   for (int z{1}; z < 100; z++)
-    myList.insert (finalcut::FString() << z << L" placeholder");
+    myList.insert (finalcut::FString{} << z << L" placeholder");
 
   // Text labels
   initLabels();
@@ -590,21 +590,21 @@ void MyDialog::initWidgets()
 void MyDialog::initFlatButtons()
 {
   // Flat buttons
-  MyButton1.setGeometry(FPoint(3, 3), FSize(5, 1));
+  MyButton1.setGeometry(FPoint{3, 3}, FSize{5, 1});
   MyButton1.setText (L"&SIN");
   MyButton1.setStatusbarMessage ("Sine function");
   MyButton1.setNoUnderline();
   MyButton1.setFlat();
   MyButton1.setDoubleFlatLine (fc::bottom);
 
-  MyButton2.setGeometry(FPoint(3, 5), FSize(5, 1));
+  MyButton2.setGeometry(FPoint{3, 5}, FSize{5, 1});
   MyButton2.setText (L"&COS");
   MyButton2.setStatusbarMessage ("Cosine function");
   MyButton2.setNoUnderline();
   MyButton2.setFlat();
   MyButton2.setDoubleFlatLine (fc::top);
 
-  MyButton3.setGeometry(FPoint(10, 3), FSize(5, 3));
+  MyButton3.setGeometry(FPoint{10, 3}, FSize{5, 3});
   MyButton3.setText (L"&=");
   MyButton3.setStatusbarMessage ("Equal");
   MyButton3.setNoUnderline();
@@ -634,25 +634,25 @@ void MyDialog::initFlatButtons()
 void MyDialog::initToggleButtons()
 {
   // Radio buttons in a group
-  radioButtonGroup.setGeometry(FPoint(3, 8), FSize(14, 4));
+  radioButtonGroup.setGeometry(FPoint{3, 8}, FSize{14, 4});
   //radioButtonGroup->unsetBorder();
 
-  radio1.setGeometry(FPoint(1, 1), FSize(10, 1));
+  radio1.setGeometry(FPoint{1, 1}, FSize{10, 1});
   radio1.setStatusbarMessage ("Enable button Test");
 
-  radio2.setGeometry(FPoint(1, 2), FSize(11, 1));
+  radio2.setGeometry(FPoint{1, 2}, FSize{11, 1});
   radio2.setText ("&Disable");
   radio2.setStatusbarMessage ("Disable button Test");
   radio2.setChecked();
   //radio2.setDisable();
 
   // Checkboxes in a group
-  checkButtonGroup.setGeometry(FPoint(3, 12), FSize(14, 4));
+  checkButtonGroup.setGeometry(FPoint{3, 12}, FSize{14, 4});
 
-  check1.setGeometry(FPoint(1, 1), FSize(11, 1));
+  check1.setGeometry(FPoint{1, 1}, FSize{11, 1});
   check1.setNoUnderline();
 
-  check2.setGeometry(FPoint(1, 2), FSize(9, 1));
+  check2.setGeometry(FPoint{1, 2}, FSize{9, 1});
   check2.setChecked();
   check2.setNoUnderline();
 }
@@ -661,17 +661,17 @@ void MyDialog::initToggleButtons()
 void MyDialog::initButtons()
 {
   // Buttons
-  MyButton4.setGeometry(FPoint(20, 8), FSize(12, 1));
+  MyButton4.setGeometry(FPoint{20, 8}, FSize{12, 1});
   MyButton4.setText (L"&Get input");
   MyButton4.setStatusbarMessage ("Take text from input field");
   MyButton4.setFocus();
 
-  MyButton5.setGeometry(FPoint(20, 11), FSize(12, 1));
+  MyButton5.setGeometry(FPoint{20, 11}, FSize{12, 1});
   MyButton5.setText (L"&Test");
   MyButton5.setStatusbarMessage ("Progressbar testing dialog");
   MyButton5.setDisable();
 
-  MyButton6.setGeometry(FPoint(20, 14), FSize(12, 1));
+  MyButton6.setGeometry(FPoint{20, 14}, FSize{12, 1});
   MyButton6.setText (L"&Quit");
   MyButton6.setStatusbarMessage ("Exit the program");
   MyButton6.addAccelerator('x');
@@ -701,20 +701,20 @@ void MyDialog::initButtons()
 void MyDialog::initLabels()
 {
   // Text labels
-  headline.setGeometry(FPoint(21, 3), FSize(10, 1));
+  headline.setGeometry(FPoint{21, 3}, FSize{10, 1});
   headline.setEmphasis();
   headline.setAlignment (fc::alignCenter);
   headline = L"List items";
 
-  tagged.setGeometry(FPoint(21, 4), FSize(7, 1));
+  tagged.setGeometry(FPoint{21, 4}, FSize{7, 1});
 
-  tagged_count.setGeometry(FPoint(29, 4), FSize(5, 1));
+  tagged_count.setGeometry(FPoint{29, 4}, FSize{5, 1});
   tagged_count << 0;
 
-  sum.setGeometry(FPoint(21, 5), FSize(7, 3));
+  sum.setGeometry(FPoint{21, 5}, FSize{7, 3});
   sum.setAlignment (fc::alignRight);
 
-  sum_count.setGeometry(FPoint(29, 5), FSize(5, 3));
+  sum_count.setGeometry(FPoint{29, 5}, FSize{5, 3});
   sum_count << myList.getCount();
 }
 
@@ -809,7 +809,7 @@ void MyDialog::cb_terminfo (const finalcut::FWidget*, const FDataPtr)
   finalcut::FMessageBox info1 \
   (
     "Environment"
-    , finalcut::FString()
+    , finalcut::FString{}
       << "  Type: " << getTermType() << "\n"
       << "  Name: " << getTermFileName() << "\n"
       << "  Mode: " << getEncodingString() << "\n"
@@ -836,22 +836,22 @@ void MyDialog::cb_drives (const finalcut::FWidget*, const FDataPtr)
 
   if ( isNewFont() )
   {
-    finalcut::FLabel drive (finalcut::NF_Drive, &info2);
-    drive.setGeometry (FPoint(11, 2), FSize(4, 1));
-    finalcut::FLabel net (finalcut::NF_Net_Drive, &info2);
-    net.setGeometry (FPoint(11, 4), FSize(4, 1));
-    finalcut::FLabel cd (finalcut::NF_CD_ROM, &info2);
-    cd.setGeometry (FPoint(11, 6), FSize(4, 1));
+    finalcut::FLabel drive {finalcut::NF_Drive, &info2};
+    drive.setGeometry (FPoint{11, 2}, FSize{4, 1});
+    finalcut::FLabel net {finalcut::NF_Net_Drive, &info2};
+    net.setGeometry (FPoint{11, 4}, FSize{4, 1});
+    finalcut::FLabel cd {finalcut::NF_CD_ROM, &info2};
+    cd.setGeometry (FPoint{11, 6}, FSize{4, 1});
     info2.exec();
   }
   else
   {
-    finalcut::FLabel drive ("  - ", &info2);
-    drive.setGeometry (FPoint(11, 2), FSize(4, 1));
-    finalcut::FLabel net ("  N ", &info2);
-    net.setGeometry (FPoint(11, 4), FSize(4, 1));
-    finalcut::FLabel cd (" CD ", &info2);
-    cd.setGeometry (FPoint(11, 6), FSize(4, 1));
+    finalcut::FLabel drive {"  - ", &info2};
+    drive.setGeometry (FPoint{11, 2}, FSize{4, 1});
+    finalcut::FLabel net {"  N ", &info2};
+    net.setGeometry (FPoint{11, 4}, FSize{4, 1});
+    finalcut::FLabel cd {" CD ", &info2};
+    cd.setGeometry (FPoint{11, 6}, FSize{4, 1});
 
     if ( isMonochron() )
     {
@@ -915,7 +915,7 @@ void MyDialog::cb_input2buttonText (finalcut::FWidget* widget, FDataPtr data)
 void MyDialog::cb_setTitlebar (finalcut::FWidget* widget, const FDataPtr)
 {
   auto& lineedit = *(static_cast<finalcut::FLineEdit*>(widget));
-  finalcut::FString title;
+  finalcut::FString title{};
   lineedit >> title;
   setTermTitle (title);
   setText (title);
@@ -963,7 +963,7 @@ void MyDialog::cb_activateButton (finalcut::FWidget* widget, FDataPtr data)
 //----------------------------------------------------------------------
 void MyDialog::cb_view (const finalcut::FWidget*, FDataPtr data)
 {
-  finalcut::FString file;
+  finalcut::FString file{};
   const auto& item = static_cast<finalcut::FMenuItem*>(data);
 
   if ( item && ! item->getText().isEmpty() )
@@ -977,9 +977,9 @@ void MyDialog::cb_view (const finalcut::FWidget*, FDataPtr data)
   const auto& view = new TextWindow(this);
   finalcut::FString filename(basename(const_cast<char*>(file.c_str())));
   view->setText ("Viewer: " + filename);
-  view->setGeometry ( FPoint ( 1 + int((getRootWidget()->getWidth() - 60) / 2),
-                               int(getRootWidget()->getHeight() / 6) )
-                    , FSize(60, getRootWidget()->getHeight() * 3 / 4) );
+  view->setGeometry ( FPoint { 1 + int((getRootWidget()->getWidth() - 60) / 2),
+                               int(getRootWidget()->getHeight() / 6) }
+                    , FSize{60, getRootWidget()->getHeight() * 3 / 4} );
   view->setResizeable();
   std::string line = "";
   std::ifstream infile;
@@ -1019,7 +1019,7 @@ int main (int argc, char* argv[])
                                 + " (C) 2020 by Markus Gans" };
 
   // Create the application object app
-  finalcut::FApplication app(argc, argv);
+  finalcut::FApplication app{argc, argv};
   app.setNonBlockingRead();
   app.redefineDefaultColors(true);
   app.setTermTitle (title);
@@ -1034,10 +1034,10 @@ int main (int argc, char* argv[])
   //app.setNewFont();
 
   // Create main dialog object d
-  MyDialog d(&app);
+  MyDialog d{&app};
   d.setText (title);
-  d.setGeometry ( FPoint(int((app.getWidth() - 56) / 2), 2)
-                , FSize(56, app.getHeight() - 4) );
+  d.setGeometry ( FPoint{int((app.getWidth() - 56) / 2), 2}
+                , FSize{56, app.getHeight() - 4} );
   d.setShadow();
 
   // Set the dialog object d as the main widget of the application.
diff --git a/examples/watch.cpp b/examples/watch.cpp
index c49fb798..fdce0bc5 100644
--- a/examples/watch.cpp
+++ b/examples/watch.cpp
@@ -80,20 +80,20 @@ Watch::Watch (FWidget* parent)
   //   (CERT, OOP50-CPP)
   FDialog::setText ("Watch");
   const int pw = int(getParentWidget()->getWidth());
-  FDialog::setGeometry (FPoint(1 + (pw - 22) / 2, 3), FSize(22, 13));
+  FDialog::setGeometry (FPoint{1 + (pw - 22) / 2, 3}, FSize{22, 13});
 
   // Labels
-  time_label.setGeometry(FPoint(5, 2), FSize(5, 1));
+  time_label.setGeometry(FPoint{5, 2}, FSize{5, 1});
   time_label.setEmphasis();
-  time_str.setGeometry(FPoint(10, 2), FSize(8, 1));
+  time_str.setGeometry(FPoint{10, 2}, FSize{8, 1});
 
   // Checkbox buttons
-  clock_sw.setGeometry(FPoint(4, 4), FSize(9, 1));
-  seconds_sw.setGeometry(FPoint(2, 6), FSize(11, 1));
+  clock_sw.setGeometry(FPoint{4, 4}, FSize{9, 1});
+  seconds_sw.setGeometry(FPoint{2, 6}, FSize{11, 1});
   sec = seconds_sw.setChecked();
 
   // Quit button
-  quit_btn.setGeometry(FPoint(6, 9), FSize(9, 1));
+  quit_btn.setGeometry(FPoint{6, 9}, FSize{9, 1});
 
   // Connect switch signal "toggled" with a callback member function
   clock_sw.addCallback
@@ -202,10 +202,10 @@ void Watch::adjustSize()
 int main (int argc, char* argv[])
 {
   // Create the application object
-  finalcut::FApplication app(argc, argv);
+  finalcut::FApplication app{argc, argv};
 
   // Create a simple dialog box
-  Watch w(&app);
+  Watch w{&app};
 
   // Set dialog w as main widget
   finalcut::FWidget::setMainWidget(&w);
diff --git a/examples/windows.cpp b/examples/windows.cpp
index 98895dd8..f761f065 100644
--- a/examples/windows.cpp
+++ b/examples/windows.cpp
@@ -76,33 +76,33 @@ SmallWindow::SmallWindow (finalcut::FWidget* parent)
   left_arrow.setForegroundColor (wc.label_inactive_fg);
   left_arrow.setEmphasis();
   left_arrow.ignorePadding();
-  left_arrow.setGeometry (FPoint(2, 2), FSize(1, 1));
+  left_arrow.setGeometry (FPoint{2, 2}, FSize{1, 1});
 
   right_arrow = arrow_up;
   right_arrow.setForegroundColor (wc.label_inactive_fg);
   right_arrow.setEmphasis();
   right_arrow.ignorePadding();
-  right_arrow.setGeometry (FPoint(int(getWidth()) - 1, 2), FSize(1, 1));
+  right_arrow.setGeometry (FPoint{int(getWidth()) - 1, 2}, FSize{1, 1});
 
   top_left_label = "menu";
   top_left_label.setForegroundColor (wc.label_inactive_fg);
   top_left_label.setEmphasis();
-  top_left_label.setGeometry (FPoint(1, 1), FSize(6, 1));
+  top_left_label.setGeometry (FPoint{1, 1}, FSize{6, 1});
 
   top_right_label = "zoom";
   top_right_label.setAlignment (fc::alignRight);
   top_right_label.setForegroundColor (wc.label_inactive_fg);
   top_right_label.setEmphasis();
-  top_right_label.setGeometry (FPoint(int(getClientWidth()) - 5, 1), FSize(6, 1));
+  top_right_label.setGeometry (FPoint{int(getClientWidth()) - 5, 1}, FSize{6, 1});
 
-  finalcut::FString bottom_label_text ( "resize\n"
-                                        "corner\n" );
+  finalcut::FString bottom_label_text { "resize\n"
+                                        "corner\n" };
   bottom_label_text += arrow_down;
   bottom_label = bottom_label_text;
   bottom_label.setAlignment (fc::alignRight);
   bottom_label.setForegroundColor (wc.label_inactive_fg);
   bottom_label.setEmphasis();
-  bottom_label.setGeometry (FPoint(13, 3), FSize(6, 3));
+  bottom_label.setGeometry (FPoint{13, 3}, FSize{6, 3});
 }
 
 //----------------------------------------------------------------------
@@ -124,12 +124,12 @@ void SmallWindow::adjustSize()
   }
 
   finalcut::FDialog::adjustSize();
-  right_arrow.setGeometry ( FPoint(int(getWidth()) - 1, 2)
-                          , FSize(1, 1) );
-  top_right_label.setGeometry ( FPoint(int(getClientWidth()) - 5, 1)
-                              , FSize(6, 1) );
-  bottom_label.setGeometry ( FPoint(1, int(getClientHeight()) - 2)
-                          , FSize(getClientWidth(), 3) );
+  right_arrow.setGeometry ( FPoint{int(getWidth()) - 1, 2}
+                          , FSize{1, 1} );
+  top_right_label.setGeometry ( FPoint{int(getClientWidth()) - 5, 1}
+                              , FSize{6, 1} );
+  bottom_label.setGeometry ( FPoint{1, int(getClientHeight()) - 2}
+                           , FSize{getClientWidth(), 3} );
 }
 
 //----------------------------------------------------------------------
@@ -311,11 +311,11 @@ void Window::configureFileMenuItems()
 void Window::configureDialogButtons()
 {
   // Dialog buttons
-  CreateButton.setGeometry (FPoint(2, 2), FSize(9, 1));
+  CreateButton.setGeometry (FPoint{2, 2}, FSize{9, 1});
   CreateButton.setText (L"&Create");
-  CloseButton.setGeometry (FPoint(15, 2), FSize(9, 1));
+  CloseButton.setGeometry (FPoint{15, 2}, FSize{9, 1});
   CloseButton.setText (L"C&lose");
-  QuitButton.setGeometry (FPoint(28, 2), FSize(9, 1));
+  QuitButton.setGeometry (FPoint{28, 2}, FSize{9, 1});
   QuitButton.setText (L"&Quit");
 
   // Add button callback
@@ -352,7 +352,7 @@ void Window::adjustSize()
   if ( Y < 2 )
     Y = 2;
 
-  setPos (FPoint(X, Y));
+  setPos (FPoint{X, Y});
   const auto& first = windows.begin();
   auto iter = first;
 
@@ -363,7 +363,7 @@ void Window::adjustSize()
       const int n = int(std::distance(first, iter));
       const int x = dx + 5 + (n % 3) * 25 + int(n / 3) * 3;
       const int y = dy + 11 + int(n / 3) * 3;
-      (*iter)->dgl->setPos (FPoint(x, y));
+      (*iter)->dgl->setPos (FPoint{x, y});
     }
 
     ++iter;
@@ -460,8 +460,8 @@ void Window::cb_createWindows (const finalcut::FWidget*, const FDataPtr)
       const int n = int(std::distance(first, iter));
       const int x = dx + 5 + (n % 3) * 25 + int(n / 3) * 3;
       const int y = dy + 11 + int(n / 3) * 3;
-      win->setGeometry (FPoint(x, y), FSize(20, 8));
-      win->setMinimumSize (FSize(20, 8));
+      win->setGeometry (FPoint{x, y}, FSize{20, 8});
+      win->setMinimumSize (FSize{20, 8});
       win->setResizeable();
       win->show();
 
@@ -561,13 +561,13 @@ void Window::cb_destroyWindow (const finalcut::FWidget*, FDataPtr data)
 int main (int argc, char* argv[])
 {
   // Create the application object
-  finalcut::FApplication app (argc, argv);
+  finalcut::FApplication app {argc, argv};
 
   // Create main dialog object
-  Window main_dlg (&app);
+  Window main_dlg {&app};
   main_dlg.setText ("Main window");
-  main_dlg.setGeometry ( FPoint(int(1 + (app.getWidth() - 40) / 2), 2)
-                       , FSize(40, 6) );
+  main_dlg.setGeometry ( FPoint{int(1 + (app.getWidth() - 40) / 2), 2}
+                       , FSize{40, 6} );
 
   // Set dialog main_dlg as main widget
   finalcut::FWidget::setMainWidget (&main_dlg);
diff --git a/src/fapplication.cpp b/src/fapplication.cpp
index 7da4deb0..8d8b6294 100644
--- a/src/fapplication.cpp
+++ b/src/fapplication.cpp
@@ -86,10 +86,9 @@ FApplication::FApplication ( const int& _argc
 
   if ( ! (_argc && _argv) )
   {
-    app_argc = 0;
     static char empty_str[1] = "";
-    auto empty = const_cast<char*>(empty_str);
-    app_argv = static_cast<char**>(&empty);
+    app_argc = 0;
+    app_argv = reinterpret_cast<char**>(&empty_str);
   }
 
   init (key_timeout, dblclick_interval);
@@ -392,7 +391,7 @@ void FApplication::cmd_options (const int& argc, char* argv[])
     {
       if ( std::strcmp(long_options[idx].name, "encoding") == 0 )
       {
-        FString encoding(optarg);
+        FString encoding{optarg};
         encoding = encoding.toLower();
 
         if ( encoding.includes("utf8") )
@@ -482,7 +481,7 @@ inline void FApplication::findKeyboardWidget()
 }
 
 //----------------------------------------------------------------------
-inline bool FApplication::isKeyPressed()
+inline bool FApplication::isKeyPressed() const
 {
   if ( mouse && mouse->isGpmMouseEnabled() )
     return mouse->getGpmKeyPressed(keyboard->unprocessedInput());
diff --git a/src/fbutton.cpp b/src/fbutton.cpp
index ab68691b..0e110d02 100644
--- a/src/fbutton.cpp
+++ b/src/fbutton.cpp
@@ -169,12 +169,12 @@ bool FButton::setShadow (bool enable)
     && getEncoding() != fc::ASCII )
   {
     setFlags().shadow = true;
-    setShadowSize(FSize(1, 1));
+    setShadowSize(FSize{1, 1});
   }
   else
   {
     setFlags().shadow = false;
-    setShadowSize(FSize(0, 0));
+    setShadowSize(FSize{0, 0});
   }
 
   return getFlags().shadow;
@@ -233,8 +233,8 @@ void FButton::hide()
 
   for (std::size_t y{0}; y < getHeight() + s + (f << 1); y++)
   {
-    print() << FPoint(1 - int(f), 1 + int(y - f))
-            << FString(size, L' ');
+    print() << FPoint{1 - int(f), 1 + int(y - f)}
+            << FString{size, L' '};
   }
 }
 
@@ -286,7 +286,7 @@ void FButton::onMouseDown (FMouseEvent* ev)
       getStatusBar()->drawMessage();
   }
 
-  const FPoint tPos(ev->getTermPos());
+  const FPoint tPos{ev->getTermPos()};
 
   if ( getTermGeometry().contains(tPos) )
     setDown();
@@ -313,7 +313,7 @@ void FButton::onMouseMove (FMouseEvent* ev)
   if ( ev->getButton() != fc::LeftButton )
     return;
 
-  const FPoint tPos(ev->getTermPos());
+  const FPoint tPos{ev->getTermPos()};
 
   if ( click_animation )
   {
@@ -430,7 +430,7 @@ inline std::size_t FButton::clickAnimationIndent (const FWidget* parent_widget)
 
   for (int y{1}; y <= int(getHeight()); y++)
   {
-    print() << FPoint(1, y) << ' ';  // clear one left █
+    print() << FPoint{1, y} << ' ';  // clear one left █
   }
 
   return 1;
@@ -452,7 +452,7 @@ inline void FButton::clearRightMargin (const FWidget* parent_widget)
     if ( isMonochron() )
       setReverse(true);  // Light background
 
-    print() << FPoint(1 + int(getWidth()), y) << ' ';  // clear right
+    print() << FPoint{1 + int(getWidth()), y} << ' ';  // clear right
 
     if ( getFlags().active && isMonochron() )
       setReverse(false);  // Dark background
@@ -468,7 +468,7 @@ inline void FButton::drawMarginLeft()
 
   for (std::size_t y{0}; y < getHeight(); y++)
   {
-    print() << FPoint(1 + int(indent), 1 + int(y));
+    print() << FPoint{1 + int(indent), 1 + int(y)};
 
     if ( isMonochron() && active_focus && y == vcenter_offset )
       print (fc::BlackRightPointingPointer);  // ►
@@ -484,7 +484,7 @@ inline void FButton::drawMarginRight()
 
   for (std::size_t y{0}; y < getHeight(); y++)
   {
-    print() << FPoint(int(getWidth() + indent), 1 + int(y));
+    print() << FPoint{int(getWidth() + indent), 1 + int(y)};
 
     if ( isMonochron() && active_focus && y == vcenter_offset )
       print (fc::BlackLeftPointingPointer);   // ◄
@@ -503,7 +503,7 @@ inline void FButton::drawTopBottomBackground()
 
   for (std::size_t y{0}; y < vcenter_offset; y++)
   {
-    print() << FPoint(2 + int(indent), 1 + int(y));
+    print() << FPoint{2 + int(indent), 1 + int(y)};
 
     for (std::size_t x{1}; x < getWidth() - 1; x++)
       print (space_char);  // █
@@ -511,7 +511,7 @@ inline void FButton::drawTopBottomBackground()
 
   for (std::size_t y{vcenter_offset + 1}; y < getHeight(); y++)
   {
-    print() << FPoint(2 + int(indent), 1 + int(y));
+    print() << FPoint{2 + int(indent), 1 + int(y)};
 
     for (std::size_t x{1}; x < getWidth() - 1; x++)
       print (space_char);  // █
@@ -524,8 +524,8 @@ inline void FButton::drawButtonTextLine (const FString& button_text)
   std::size_t z{0};
   std::size_t pos{};
   std::size_t columns{0};
-  print() << FPoint(2 + int(indent), 1 + int(vcenter_offset))
-          << FColorPair (button_fg, button_bg);
+  print() << FPoint{2 + int(indent), 1 + int(vcenter_offset)}
+          << FColorPair{button_fg, button_bg};
 
   if ( getWidth() < column_width + 1 )
     center_offset = 0;
@@ -537,11 +537,11 @@ inline void FButton::drawButtonTextLine (const FString& button_text)
     print (space_char);  // █
 
   if ( hotkeypos == NOT_SET )
-    setCursorPos (FPoint ( 2 + int(center_offset)
-                         , 1 + int(vcenter_offset) ));  // first character
+    setCursorPos ({ 2 + int(center_offset)
+                  , 1 + int(vcenter_offset) });  // first character
   else
-    setCursorPos (FPoint ( 2 + int(center_offset + hotkeypos)
-                         , 1 + int(vcenter_offset) ));  // hotkey
+    setCursorPos ({ 2 + int(center_offset + hotkeypos)
+                  , 1 + int(vcenter_offset) });  // hotkey
 
   if ( ! getFlags().active && isMonochron() )
     setReverse(true);  // Light background
@@ -585,7 +585,7 @@ inline void FButton::drawButtonTextLine (const FString& button_text)
   if ( column_width + 1 >= getWidth() )
   {
     // Print ellipsis
-    print() << FPoint(int(getWidth() + indent) - 2, 1) << "..";
+    print() << FPoint{int(getWidth() + indent) - 2, 1} << "..";
   }
 
   if ( active_focus && (isMonochron() || getMaxColor() < 16) )
diff --git a/src/fbuttongroup.cpp b/src/fbuttongroup.cpp
index dfafae1a..219fedbb 100644
--- a/src/fbuttongroup.cpp
+++ b/src/fbuttongroup.cpp
@@ -211,7 +211,7 @@ void FButtonGroup::hide()
   unsetViewportPrint();
 
   for (int y{0}; y < int(getHeight()); y++)
-    print() << FPoint(1, 1 + y) << FString(size, L' ');
+    print() << FPoint{1, 1 + y} << FString{size, L' '};
 
   setViewportPrint();
 }
@@ -405,9 +405,9 @@ void FButtonGroup::drawLabel()
   const auto hotkeypos = finalcut::getHotkeyPos(txt, label_text);
 
   if ( hasBorder() )
-    FWidget::setPrintPos (FPoint(2, 1));
+    FWidget::setPrintPos (FPoint{2, 1});
   else
-    FWidget::setPrintPos (FPoint(0, 1));
+    FWidget::setPrintPos (FPoint{0, 1});
 
   drawText (label_text, hotkeypos);
   setViewportPrint();
@@ -430,7 +430,7 @@ void FButtonGroup::init()
   const auto& wc = getFWidgetColors();
   setForegroundColor (wc.label_fg);
   setBackgroundColor (wc.label_bg);
-  setMinimumSize (FSize(7, 3));
+  setMinimumSize (FSize{7, 3});
   buttonlist.clear();  // no buttons yet
 }
 
@@ -480,7 +480,7 @@ void FButtonGroup::drawText ( const FString& label_text
   }
 
   if ( ellipsis )  // Print ellipsis
-    print() << FColorPair (wc.label_ellipsis_fg, wc.label_bg) << "..";
+    print() << FColorPair {wc.label_ellipsis_fg, wc.label_bg} << "..";
 
   if ( isMonochron() )
     setReverse(true);
@@ -549,17 +549,15 @@ void FButtonGroup::cb_buttonToggled (FWidget* widget, const FDataPtr)
 {
   const auto& button = static_cast<FToggleButton*>(widget);
 
-  if ( ! button->isChecked() )
-    return;
-
-  if ( buttonlist.empty() )
+  if ( (button && ! button->isChecked()) || buttonlist.empty() )
     return;
 
   for (auto&& item : buttonlist)
   {
     auto toggle_button = static_cast<FToggleButton*>(item);
 
-    if ( toggle_button != button
+    if ( toggle_button
+      && toggle_button != button
       && toggle_button->isChecked()
       && isRadioButton(toggle_button) )
     {
diff --git a/src/fcheckbox.cpp b/src/fcheckbox.cpp
index b6fe572e..e719bcc5 100644
--- a/src/fcheckbox.cpp
+++ b/src/fcheckbox.cpp
@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2014-2019 Markus Gans                                      *
+* Copyright 2014-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -73,7 +73,7 @@ void FCheckBox::draw()
 //----------------------------------------------------------------------
 void FCheckBox::drawCheckButton()
 {
-  print() << FPoint(1, 1);
+  print() << FPoint{1, 1};
   setColor();
 
   if ( isMonochron() )
diff --git a/src/fcombobox.cpp b/src/fcombobox.cpp
index bad7631c..c4f3930a 100644
--- a/src/fcombobox.cpp
+++ b/src/fcombobox.cpp
@@ -73,12 +73,12 @@ void FDropDownListBox::setGeometry ( const FPoint& pos, const FSize& size
 
   if ( isNewFont() )
   {
-    FSize new_size(size);
+    FSize new_size{size};
     new_size.scaleBy(-1, 0);
-    list.setGeometry (FPoint(2, 1), new_size, adjust);
+    list.setGeometry (FPoint{2, 1}, new_size, adjust);
   }
   else
-    list.setGeometry (FPoint(1, 1), size, adjust);
+    list.setGeometry (FPoint{1, 1}, size, adjust);
 }
 
 //----------------------------------------------------------------------
@@ -113,10 +113,10 @@ void FDropDownListBox::init()
   ignorePadding();
   setShadow();
   // initialize geometry values
-  setGeometry (FPoint(1, 1), FSize(3, 3), false);
-  setMinimumSize (FSize(3, 3));
+  setGeometry (FPoint{1, 1}, FSize{3, 3}, false);
+  setMinimumSize (FSize{3, 3});
   hide();
-  list.setGeometry (FPoint(1, 1), FSize(3, 3), false);
+  list.setGeometry (FPoint{1, 1}, FSize{3, 3}, false);
 }
 
 //----------------------------------------------------------------------
@@ -142,7 +142,7 @@ void FDropDownListBox::drawShadow()
   const auto& wc = getFWidgetColors();
   finalcut::drawShadow(this);
   setColor (wc.shadow_fg, wc.shadow_bg);
-  print() << FPoint(int(getWidth()) + 1, 1) << fc::FullBlock;  // █
+  print() << FPoint{int(getWidth()) + 1, 1} << fc::FullBlock;  // █
 }
 
 //----------------------------------------------------------------------
@@ -183,7 +183,7 @@ FComboBox::~FComboBox()  // destructor
 void FComboBox::setSize (const FSize& size, bool adjust)
 {
   FWidget::setSize (size, adjust);
-  FSize input_field_size(size);
+  FSize input_field_size{size};
   input_field_size.scaleBy(-(1 + nf), 0);
   input_field.setSize (input_field_size, adjust);
 }
@@ -193,9 +193,9 @@ void FComboBox::setGeometry ( const FPoint& pos, const FSize& size
                             , bool adjust )
 {
   FWidget::setGeometry (pos, size, adjust);
-  FSize input_field_size(size);
+  FSize input_field_size{size};
   input_field_size.scaleBy(-(1 + nf), 0);
-  input_field.setGeometry (FPoint(1, 1), input_field_size, adjust);
+  input_field.setGeometry (FPoint{1, 1}, input_field_size, adjust);
 }
 
 //----------------------------------------------------------------------
@@ -222,12 +222,12 @@ bool FComboBox::setShadow (bool enable)
     && getEncoding() != fc::ASCII )
   {
     setFlags().shadow = true;
-    setShadowSize(FSize(1, 1));
+    setShadowSize(FSize{1, 1});
   }
   else
   {
     setFlags().shadow = false;
-    setShadowSize(FSize(0, 0));
+    setShadowSize(FSize{0, 0});
   }
 
   return getFlags().shadow;
@@ -324,12 +324,12 @@ void FComboBox::showDropDown()
 
   static constexpr std::size_t border = 2;  // Size of the top and bottom border
   setOpenMenu(&list_window);
-  FPoint p(getTermPos());
+  FPoint p{getTermPos()};
   p.move(0 - int(nf), 1);
   setClickedWidget(&list_window.list);
   const std::size_t w = getWidth();
   const std::size_t h = ( getCount() <= max_items ) ? getCount() : max_items;
-  list_window.setGeometry(p, FSize(w + std::size_t(nf), h + border));
+  list_window.setGeometry(p, FSize{w + std::size_t(nf), h + border});
   list_window.show();
   list_window.list.setFocus();
   list_window.redraw();
@@ -537,14 +537,14 @@ void FComboBox::draw()
   const FColorPair button_color = [this, &wc] ()
   {
     if ( list_window.isEmpty() )
-      return FColorPair ( wc.scrollbar_button_inactive_fg
-                        , wc.scrollbar_button_inactive_bg );
+      return FColorPair { wc.scrollbar_button_inactive_fg
+                        , wc.scrollbar_button_inactive_bg };
     else
-      return FColorPair ( wc.scrollbar_button_fg
-                        , wc.scrollbar_button_bg );
+      return FColorPair { wc.scrollbar_button_fg
+                        , wc.scrollbar_button_bg };
   }();
 
-  print() << FPoint(int(getWidth()) - nf, 1)
+  print() << FPoint{int(getWidth()) - nf, 1}
           << button_color;
 
  if ( isNewFont() )
diff --git a/src/fdialog.cpp b/src/fdialog.cpp
index 42b35ab0..8ea0335e 100644
--- a/src/fdialog.cpp
+++ b/src/fdialog.cpp
@@ -207,7 +207,7 @@ void FDialog::setPos (const FPoint& pos, bool)
   const auto& shadow = getShadow();
   const std::size_t width = getWidth() + shadow.getWidth();  // width + right shadow
   const std::size_t height = getHeight() + shadow.getHeight();  // height + bottom shadow
-  const FRect old_geometry (getTermGeometryWithShadow());
+  const FRect old_geometry {getTermGeometryWithShadow()};
 
   // move to the new position
   FWindow::setPos(pos, false);
@@ -273,28 +273,28 @@ void FDialog::move (const FPoint& d_pos)
 //----------------------------------------------------------------------
 inline bool FDialog::moveUp (int n)
 {
-  move (FPoint(0, -n));
+  move ({0, -n});
   return ! setPos_error;
 }
 
 //----------------------------------------------------------------------
 inline bool FDialog::moveDown (int n)
 {
-  move (FPoint(0, n));
+  move ({0, n});
   return ! setPos_error;
 }
 
 //----------------------------------------------------------------------
 inline bool FDialog::moveLeft (int n)
 {
-  move (FPoint(-n, 0));
+  move ({-n, 0});
   return ! setPos_error;
 }
 
 //----------------------------------------------------------------------
 inline bool FDialog::moveRight (int n)
 {
-  move (FPoint(n, 0));
+  move ({n, 0});
   return ! setPos_error;
 }
 
@@ -332,10 +332,10 @@ void FDialog::setSize (const FSize& size, bool adjust)
 
   // restoring the non-covered terminal areas
   if ( dw > 0 )
-    restoreVTerm (FRect(x + int(w), y, d_width, h + d_height));  // restore right
+    restoreVTerm ({x + int(w), y, d_width, h + d_height});  // restore right
 
   if ( dh > 0 )
-    restoreVTerm (FRect(x, y + int(h), w + d_width, d_height));  // restore bottom
+    restoreVTerm ({x, y + int(h), w + d_width, d_height});  // restore bottom
 
   redraw();
 
@@ -352,7 +352,7 @@ bool FDialog::reduceHeight (int n)
   if ( ! isResizeable() )
     return false;
 
-  setSize (FSize(getWidth(), getHeight() - std::size_t(n)));
+  setSize (FSize{getWidth(), getHeight() - std::size_t(n)});
   return ! setSize_error;
 }
 
@@ -362,7 +362,7 @@ bool FDialog::expandHeight (int n)
   if ( ! isResizeable() || getHeight() + std::size_t(getY()) > getMaxHeight() )
     return false;
 
-  setSize (FSize(getWidth(), getHeight() + std::size_t(n)));
+  setSize (FSize{getWidth(), getHeight() + std::size_t(n)});
   return ! setSize_error;
 }
 
@@ -372,7 +372,7 @@ bool FDialog::reduceWidth (int n)
   if ( ! isResizeable() )
     return false;
 
-  setSize (FSize(getWidth() - std::size_t(n), getHeight()));
+  setSize (FSize{getWidth() - std::size_t(n), getHeight()});
   return ! setSize_error;
 }
 
@@ -382,7 +382,7 @@ bool FDialog::expandWidth (int n)
   if ( ! isResizeable() || getWidth() + std::size_t(getX()) > getMaxWidth() )
     return false;
 
-  setSize (FSize(getWidth() + std::size_t(n), getHeight()));
+  setSize (FSize{getWidth() + std::size_t(n), getHeight()});
   return ! setSize_error;
 }
 
@@ -541,7 +541,7 @@ void FDialog::onMouseUp (FMouseEvent* ev)
       && titlebar_x < getTermX() + int(getWidth())
       && titlebar_y == int(getTermY()) )
     {
-      const FPoint deltaPos(ms.termPos - titlebar_click_pos);
+      const FPoint deltaPos{ms.termPos - titlebar_click_pos};
       move (deltaPos);
       titlebar_click_pos = ms.termPos;
     }
@@ -585,7 +585,7 @@ void FDialog::onMouseMove (FMouseEvent* ev)
 
   if ( ! titlebar_click_pos.isOrigin() )
   {
-    const FPoint deltaPos(ms.termPos - titlebar_click_pos);
+    const FPoint deltaPos{ms.termPos - titlebar_click_pos};
     move (deltaPos);
     titlebar_click_pos = ms.termPos;
   }
@@ -615,8 +615,8 @@ void FDialog::onMouseDoubleClick (FMouseEvent* ev)
 
   const int x = getTermX();
   const int y = getTermY();
-  const FRect title_button(x, y, 3, 1);
-  const FPoint tPos(ms.termPos);
+  const FRect title_button{x, y, 3, 1};
+  const FPoint tPos{ms.termPos};
 
   if ( title_button.contains(tPos) )
   {
@@ -758,7 +758,7 @@ void FDialog::draw()
   clearArea();
   drawBorder();
   drawTitleBar();
-  setCursorPos(FPoint(2, int(getHeight()) - 1));
+  setCursorPos({2, int(getHeight()) - 1});
 
   if ( getFlags().shadow )
     drawDialogShadow();
@@ -795,8 +795,8 @@ void FDialog::init()
   ignorePadding();
   setDialogWidget();
   // Initialize geometry values
-  setGeometry (FPoint(1, 1), FSize(10, 10), false);
-  setMinimumSize (FSize(15, 4));
+  setGeometry (FPoint{1, 1}, FSize{10, 10}, false);
+  setMinimumSize (FSize{15, 4});
   addDialog(this);
   setActiveWindow(this);
   setTransparentShadow();
@@ -830,7 +830,7 @@ void FDialog::initDialogMenu()
     return;
   }
 
-  FPoint p(getPos());
+  FPoint p{getPos()};
   p.y_ref()++;
   dialog_menu->setPos(p);
   dgl_menuitem = dialog_menu->getItem();
@@ -932,24 +932,24 @@ void FDialog::drawBorder()
 
   if ( isNewFont() )  // Draw a newfont U-shaped frame
   {
-    const FRect r(FPoint(1, 1), getSize());
+    const FRect r{FPoint{1, 1}, getSize()};
 
     for (int y = r.getY1() + 1; y < r.getY2(); y++)
     {
-      print() << FPoint(r.getX1(), y)
+      print() << FPoint{r.getX1(), y}
               << fc::NF_border_line_left        // border left ⎸
-              << FPoint(r.getX2(), y)
+              << FPoint{r.getX2(), y}
               << fc::NF_rev_border_line_right;  // border right⎹
     }
 
     print() << r.getLowerLeftPos()
             << fc::NF_border_corner_lower_left        // ⎣
-            << FString(r.getWidth() - 2, fc::NF_border_line_bottom)  // _
+            << FString{r.getWidth() - 2, fc::NF_border_line_bottom}  // _
             << fc::NF_rev_border_corner_lower_right;  // ⎦
   }
   else
   {
-    FRect box(FPoint(1, 2), getSize());
+    FRect box{{1, 2}, getSize()};
     box.scaleBy(0, -1);
     finalcut::drawBorder(this, box);
   }
@@ -972,7 +972,7 @@ void FDialog::drawTitleBar()
   if ( PRINT_WIN_NUMBER )
   {
     // Print the number of window in stack
-    print() << FPoint(int(getWidth()) - 2, 1);
+    print() << FPoint{int(getWidth()) - 2, 1};
     printf ("(%d)", getWindowLayer(this));
   }
 #endif  // DEBUG
@@ -982,7 +982,7 @@ void FDialog::drawTitleBar()
 void FDialog::drawBarButton()
 {
   // Print the title button
-  print() << FPoint(1, 1);
+  print() << FPoint{1, 1};
   const auto& wc = getFWidgetColors();
 
   if ( dialog_menu && dialog_menu->isShown() )
@@ -1173,7 +1173,7 @@ void FDialog::setCursorToFocusWidget()
     && focus->isShown()
     && focus->hasVisibleCursor() )
   {
-    const FPoint cursor_pos(focus->getCursorPos());
+    const FPoint cursor_pos{focus->getCursorPos()};
     focus->setCursorPos(cursor_pos);
     updateVTermCursor(getVWin());
   }
@@ -1215,7 +1215,7 @@ void FDialog::openMenu()
   {
     finalcut::closeOpenComboBox();
     setOpenMenu(dialog_menu);
-    FPoint pos(getPos());
+    FPoint pos{getPos()};
     pos.y_ref()++;
     dialog_menu->setPos (pos);
     dialog_menu->setVisible();
@@ -1327,7 +1327,7 @@ void FDialog::pressZoomButton (const mouseStates& ms)
 }
 
 //----------------------------------------------------------------------
-inline bool FDialog::isMouseOverMenu (const FPoint& termpos)
+inline bool FDialog::isMouseOverMenu (const FPoint& termpos) const
 {
   auto menu_geometry = dialog_menu->getTermGeometry();
 
@@ -1446,7 +1446,7 @@ inline void FDialog::lowerActivateDialog()
 }
 
 //----------------------------------------------------------------------
-bool FDialog::isOutsideTerminal (const FPoint& pos)
+bool FDialog::isOutsideTerminal (const FPoint& pos) const
 {
   if ( pos.getX() + int(getWidth()) <= 1
     || pos.getX() > int(getMaxWidth())
@@ -1458,7 +1458,7 @@ bool FDialog::isOutsideTerminal (const FPoint& pos)
 }
 
 //----------------------------------------------------------------------
-bool FDialog::isLowerRightResizeCorner (const mouseStates& ms)
+bool FDialog::isLowerRightResizeCorner (const mouseStates& ms) const
 {
   // 3 characters in the lower right corner  |
   //                                         x
@@ -1484,11 +1484,11 @@ void FDialog::resizeMouseDown (const mouseStates& ms)
   if ( isResizeable() && isLowerRightResizeCorner(ms) )
   {
     resize_click_pos = ms.termPos;
-    const FPoint lower_right_pos(getTermGeometry().getLowerRightPos());
+    const FPoint lower_right_pos{getTermGeometry().getLowerRightPos()};
 
     if ( ms.termPos != lower_right_pos )
     {
-      const FPoint deltaPos(ms.termPos - lower_right_pos);
+      const FPoint deltaPos{ms.termPos - lower_right_pos};
       const int w = lower_right_pos.getX() + deltaPos.getX() - getTermX() + 1;
       const int h = lower_right_pos.getY() + deltaPos.getY() - getTermY() + 1;
       const FSize& size = FSize(std::size_t(w), std::size_t(h));
@@ -1524,7 +1524,7 @@ void FDialog::resizeMouseUpMove (const mouseStates& ms, bool mouse_up)
     {
       int w{};
       int h{};
-      const FPoint deltaPos(ms.termPos - resize_click_pos);
+      const FPoint deltaPos{ms.termPos - resize_click_pos};
 
       if ( x2 - x2_offset <= int(getMaxWidth()) )
         w = resize_click_pos.getX() + deltaPos.getX() - getTermX() + 1;
diff --git a/src/fevent.cpp b/src/fevent.cpp
index 5051f638..8c85e612 100644
--- a/src/fevent.cpp
+++ b/src/fevent.cpp
@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2014-2018 Markus Gans                                      *
+* Copyright 2014-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -88,7 +88,7 @@ FMouseEvent::FMouseEvent ( fc::events ev_type  // constructor
 FMouseEvent::FMouseEvent ( fc::events ev_type  // constructor
                          , const FPoint& pos
                          , int button )
-  : FMouseEvent(ev_type, pos, FPoint(), button)
+  : FMouseEvent(ev_type, pos, FPoint{}, button)
 { }
 
 //----------------------------------------------------------------------
@@ -142,7 +142,7 @@ FWheelEvent::FWheelEvent ( fc::events ev_type  // constructor
 FWheelEvent::FWheelEvent ( fc::events ev_type  // constructor
                          , const FPoint& pos
                          , int wheel )
-  : FWheelEvent(ev_type, pos, FPoint(), wheel)
+  : FWheelEvent(ev_type, pos, FPoint{}, wheel)
 { }
 
 //----------------------------------------------------------------------
diff --git a/src/ffiledialog.cpp b/src/ffiledialog.cpp
index b3c36db2..2363d853 100644
--- a/src/ffiledialog.cpp
+++ b/src/ffiledialog.cpp
@@ -36,16 +36,16 @@ namespace finalcut
 
 // non-member functions
 //----------------------------------------------------------------------
-bool sortByName ( const FFileDialog::dir_entry& lhs
-                , const FFileDialog::dir_entry& rhs )
+bool sortByName ( const FFileDialog::FDirEntry& lhs
+                , const FFileDialog::FDirEntry& rhs )
 {
   // lhs < rhs
   return bool( strcasecmp(lhs.name.c_str(), rhs.name.c_str()) < 0 );
 }
 
 //----------------------------------------------------------------------
-bool sortDirFirst ( const FFileDialog::dir_entry& lhs
-                  , const FFileDialog::dir_entry& rhs )
+bool sortDirFirst ( const FFileDialog::FDirEntry& lhs
+                  , const FFileDialog::FDirEntry& rhs )
 {
   // sort directories first
   if ( lhs.directory && ! rhs.directory )
@@ -61,8 +61,8 @@ const FString fileChooser ( FWidget* parent
                           , FFileDialog::DialogType type )
 {
   FString ret{};
-  FString path(dirname);
-  FString file_filter(filter);
+  FString path{dirname};
+  FString file_filter{filter};
 
   if ( path.isNull() || path.isEmpty() )
   {
@@ -83,7 +83,7 @@ const FString fileChooser ( FWidget* parent
   if ( fileopen.exec() == FDialog::Accept )
     ret = fileopen.getPath() + fileopen.getSelectedFile();
   else
-    ret = FString();
+    ret = FString{};
 
   return ret;
 }
@@ -170,9 +170,9 @@ const FString FFileDialog::getSelectedFile() const
   const uLong n = uLong(filebrowser.currentItem() - 1);
 
   if ( dir_entries[n].directory )
-    return FString("");
+    return FString{""};
   else
-    return FString(dir_entries[n].name);
+    return FString{dir_entries[n].name};
 }
 
 //----------------------------------------------------------------------
@@ -304,7 +304,7 @@ void FFileDialog::adjustSize()
   setHeight (h, false);
   const int X = 1 + int((max_width - getWidth()) / 2);
   const int Y = 1 + int((max_height - getHeight()) / 3);
-  setPos(FPoint(X, Y), false);
+  setPos(FPoint{X, Y}, false);
   filebrowser.setHeight (h - 8, false);
   hidden_check.setY (int(h) - 4, false);
   cancel_btn.setY (int(h) - 4, false);
@@ -326,7 +326,7 @@ void FFileDialog::init()
   if ( ! fsystem )
     fsystem = FTerm::getFSystem();
 
-  setGeometry(FPoint(1, 1), FSize(w, h), false);
+  setGeometry(FPoint{1, 1}, FSize{w, h}, false);
   const auto& parent_widget = getParentWidget();
 
   if ( parent_widget )
@@ -342,7 +342,7 @@ void FFileDialog::init()
   else
     FDialog::setText("Open file");
 
-  widgetSettings (FPoint(x, y));  // Create widgets
+  widgetSettings (FPoint{x, y});  // Create widgets
   initCallbacks();
   setModal();
   readDir();
@@ -353,24 +353,24 @@ inline void FFileDialog::widgetSettings (const FPoint& pos)
 {
   filename.setLabelText ("File&name");
   filename.setText (filter_pattern);
-  filename.setGeometry (FPoint(11, 1), FSize(28, 1));
+  filename.setGeometry (FPoint{11, 1}, FSize{28, 1});
   filename.setFocus();
 
-  filebrowser.setGeometry (FPoint(2, 3), FSize(38, 6));
+  filebrowser.setGeometry (FPoint{2, 3}, FSize{38, 6});
   printPath (directory);
 
   hidden_check.setText ("&hidden files");
-  hidden_check.setGeometry (FPoint(2, 10), FSize(16, 1));
+  hidden_check.setGeometry (FPoint{2, 10}, FSize{16, 1});
 
   cancel_btn.setText ("&Cancel");
-  cancel_btn.setGeometry(FPoint(19, 10), FSize(9, 1));
+  cancel_btn.setGeometry(FPoint{19, 10}, FSize{9, 1});
 
   if ( dlg_type == FFileDialog::Save )
     open_btn.setText ("&Save");
   else
     open_btn.setText ("&Open");
 
-  open_btn.setGeometry(FPoint(30, 10), FSize(9, 1));
+  open_btn.setGeometry(FPoint{30, 10}, FSize{9, 1});
   setGeometry (pos, getSize());
 }
 
@@ -455,7 +455,7 @@ sInt64 FFileDialog::numOfDirs()
 
   const sInt64 n = std::count_if ( std::begin(dir_entries)
                                  , std::end(dir_entries)
-                                 , [] (const dir_entry& entry)
+                                 , [] (const FDirEntry& entry)
                                    {
                                      return entry.directory
                                          && std::strcmp(entry.name.c_str(), ".") != 0;
@@ -555,7 +555,7 @@ int FFileDialog::readDir()
 void FFileDialog::getEntry (const char* const dir, const struct dirent* d_entry)
 {
   const char* const filter = filter_pattern.c_str();
-  dir_entry entry{};
+  FDirEntry entry{};
 
   entry.name = d_entry->d_name;
 
@@ -590,7 +590,7 @@ void FFileDialog::getEntry (const char* const dir, const struct dirent* d_entry)
 }
 
 //----------------------------------------------------------------------
-void FFileDialog::followSymLink (const char* const dir, dir_entry& entry)
+void FFileDialog::followSymLink (const char* const dir, FDirEntry& entry)
 {
   if ( ! entry.symbolic_link )
     return;  // No symbolic link
@@ -632,9 +632,9 @@ void FFileDialog::dirEntriesToList()
   for (auto&& entry : dir_entries)
   {
     if ( entry.directory )
-      filebrowser.insert(FString(entry.name), fc::SquareBrackets);
+      filebrowser.insert(FString{entry.name}, fc::SquareBrackets);
     else
-      filebrowser.insert(FString(entry.name));
+      filebrowser.insert(FString{entry.name});
   }
 }
 
@@ -651,7 +651,7 @@ void FFileDialog::selectDirectoryEntry (const char* const name)
     if ( std::strcmp(entry.name.c_str(), name) == 0 )
     {
       filebrowser.setCurrentItem(i);
-      filename.setText(FString(name) + '/');
+      filename.setText(FString{name} + '/');
       break;
     }
 
@@ -662,8 +662,8 @@ void FFileDialog::selectDirectoryEntry (const char* const name)
 //----------------------------------------------------------------------
 int FFileDialog::changeDir (const FString& dirname)
 {
-  FString lastdir(directory);
-  FString newdir(dirname);
+  FString lastdir{directory};
+  FString newdir{dirname};
 
   if ( ! fsystem )
     fsystem = FTerm::getFSystem();
@@ -688,9 +688,9 @@ int FFileDialog::changeDir (const FString& dirname)
       return -2;
 
     case 0:
-      if ( newdir == FString("..") )
+      if ( newdir == FString{".."} )
       {
-        if ( lastdir == FString('/') )
+        if ( lastdir == FString{'/'} )
           filename.setText('/');
         else
         {
@@ -700,7 +700,7 @@ int FFileDialog::changeDir (const FString& dirname)
       }
       else
       {
-        FString firstname(dir_entries[0].name);
+        FString firstname{dir_entries[0].name};
 
         if ( dir_entries[0].directory )
           filename.setText(firstname + '/');
@@ -728,7 +728,7 @@ void FFileDialog::printPath (const FString& txt)
   {
     const std::size_t width = max_width - 2;
     const std::size_t first = column_width + 1 - width;
-    const FString sub_str(getColumnSubString (path, first, width));
+    const FString sub_str{getColumnSubString (path, first, width)};
     filebrowser.setText(".." + sub_str);
   }
   else
@@ -748,9 +748,9 @@ const FString FFileDialog::getHomeDir()
   const uid_t euid = fsystem->geteuid();
 
   if ( fsystem->getpwuid_r(euid, &pwd, buf, sizeof(buf), &pwd_ptr) )
-    return FString("");
+    return FString{""};
   else
-    return FString(pwd.pw_dir);
+    return FString{pwd.pw_dir};
 }
 
 //----------------------------------------------------------------------
@@ -769,7 +769,7 @@ void FFileDialog::cb_processActivate (const FWidget*, const FDataPtr)
     readDir();
     filebrowser.redraw();
   }
-  else if ( filename.getText().trim() == FString("..")
+  else if ( filename.getText().trim() == FString{".."}
          || filename.getText().includes('/')
          || filename.getText().includes('~') )
   {
@@ -784,9 +784,9 @@ void FFileDialog::cb_processActivate (const FWidget*, const FDataPtr)
     {
       found = std::any_of ( std::begin(dir_entries)
                           , std::end(dir_entries)
-                          , [&input] (const dir_entry& entry)
+                          , [&input] (const FDirEntry& entry)
                             {
-                              return entry.name.c_str()
+                              return ! entry.name.empty()
                                   && input
                                   && ! input.isNull()
                                   && std::strcmp(entry.name.c_str(), input) == 0
@@ -810,7 +810,7 @@ void FFileDialog::cb_processRowChanged (const FWidget*, const FDataPtr)
   if ( n == 0 )
     return;
 
-  const auto& name = FString(dir_entries[n - 1].name);
+  const auto& name = FString{dir_entries[n - 1].name};
 
   if ( dir_entries[n - 1].directory )
     filename.setText(name + '/');
diff --git a/src/fkeyboard.cpp b/src/fkeyboard.cpp
index 999ad02b..d058f5d2 100644
--- a/src/fkeyboard.cpp
+++ b/src/fkeyboard.cpp
@@ -86,12 +86,12 @@ const FString FKeyboard::getKeyName (const FKey keynum)
 {
   for (std::size_t i{0}; fc::fkeyname[i].string[0] != 0; i++)
     if ( fc::fkeyname[i].num && fc::fkeyname[i].num == keynum )
-      return FString(fc::fkeyname[i].string);
+      return FString{fc::fkeyname[i].string};
 
   if ( keynum > 32 && keynum < 127 )
-    return FString(char(keynum));
+    return FString{char(keynum)};
 
-  return FString("");
+  return FString{""};
 }
 
 //----------------------------------------------------------------------
@@ -115,7 +115,7 @@ bool& FKeyboard::unprocessedInput()
 }
 
 //----------------------------------------------------------------------
-bool FKeyboard::isKeyPressed()
+bool FKeyboard::isKeyPressed() const
 {
   fd_set ifds{};
   struct timeval tv{};
diff --git a/src/flabel.cpp b/src/flabel.cpp
index d74fc43a..a527fb57 100644
--- a/src/flabel.cpp
+++ b/src/flabel.cpp
@@ -349,7 +349,7 @@ void FLabel::drawMultiLine()
     else
       label_text = multiline_text[y];
 
-    print() << FPoint(1, 1 + int(y));
+    print() << FPoint{1, 1 + int(y)};
 
     if ( hotkeypos != NOT_SET )
     {
@@ -374,7 +374,7 @@ void FLabel::drawSingleLine()
   if ( hotkeypos != NOT_SET )
     column_width--;
 
-  print() << FPoint(1, 1);
+  print() << FPoint{1, 1};
   align_offset = getAlignOffset(column_width);
   printLine (label_text);
 }
@@ -387,7 +387,7 @@ void FLabel::printLine (FString& line)
   const std::size_t width(getWidth());
 
   if ( align_offset > 0 )
-    print (FString(align_offset, ' '));  // leading spaces
+    print (FString{align_offset, ' '});  // leading spaces
 
   if ( column_width <= width )
   {
@@ -438,15 +438,15 @@ void FLabel::printLine (FString& line)
   if ( column_width > width )
   {
     // Print ellipsis
-    print() << FColorPair(ellipsis_color, getBackgroundColor())
-            << FString("..").left(width);
+    print() << FColorPair{ellipsis_color, getBackgroundColor()}
+            << FString{".."}.left(width);
     setColor();
   }
   else if ( align_offset + to_column < width )
   {
     // Print trailing spaces
     const std::size_t len = width - align_offset - to_column;
-    print (FString(len, ' '));
+    print (FString{len, ' '});
   }
 
   if ( hasReverseMode() )
diff --git a/src/flineedit.cpp b/src/flineedit.cpp
index ca1afa42..6a4bf64a 100644
--- a/src/flineedit.cpp
+++ b/src/flineedit.cpp
@@ -155,12 +155,12 @@ bool FLineEdit::setShadow (bool enable)
     && getEncoding() != fc::ASCII )
   {
     setFlags().shadow = true;
-    setShadowSize(FSize(1, 1));
+    setShadowSize(FSize{1, 1});
   }
   else
   {
     setFlags().shadow = false;
-    setShadowSize(FSize(0, 0));
+    setShadowSize(FSize{0, 0});
   }
 
   return getFlags().shadow;
@@ -280,7 +280,7 @@ void FLineEdit::hide()
     label->hide();
 
   FWidget::hide();
-  const FSize shadow = hasShadow() ? FSize(1, 1) : FSize(0, 0);
+  const FSize shadow = hasShadow() ? FSize{1, 1} : FSize{0, 0};
   hideArea (getSize() + shadow);
 }
 
@@ -629,13 +629,13 @@ void FLineEdit::adjustLabel()
 
   if ( label_orientation == label_above )
   {
-    label->setGeometry ( FPoint(w->getX(), w->getY() - 1)
-                       , FSize(label_width, 1) );
+    label->setGeometry ( FPoint{w->getX(), w->getY() - 1}
+                       , FSize{label_width, 1} );
   }
   else if ( label_orientation == label_left )
   {
-    label->setGeometry ( FPoint(w->getX() - int(label_width) - 1, w->getY())
-                       , FSize(label_width, 1) );
+    label->setGeometry ( FPoint{w->getX() - int(label_width) - 1, w->getY()}
+                       , FSize{label_width, 1} );
   }
 }
 
@@ -685,7 +685,7 @@ void FLineEdit::init()
 }
 
 //----------------------------------------------------------------------
-bool FLineEdit::hasHotkey()
+bool FLineEdit::hasHotkey() const
 {
   if ( label_text.isEmpty() )
     return 0;
@@ -721,7 +721,7 @@ void FLineEdit::draw()
 void FLineEdit::drawInputField()
 {
   const bool isActiveFocus = getFlags().active && getFlags().focus;
-  print() << FPoint(1, 1);
+  print() << FPoint{1, 1};
 
   if ( isMonochron() )
   {
@@ -782,7 +782,7 @@ void FLineEdit::drawInputField()
   const int xpos = int(2 + cursor_pos_column
                          - text_offset_column
                          + char_width_offset);
-  setCursorPos (FPoint(xpos, 1));
+  setCursorPos ({xpos, 1});
 }
 
 //----------------------------------------------------------------------
@@ -804,10 +804,10 @@ inline std::size_t FLineEdit::printTextField()
 inline std::size_t FLineEdit::printPassword()
 {
   const std::size_t text_offset_column = text_offset;
-  const FString show_text(print_text.mid(1 + text_offset, getWidth() - 2));
+  const FString show_text{print_text.mid(1 + text_offset, getWidth() - 2)};
 
   if ( ! show_text.isEmpty() )
-    print() << FString(show_text.getLength(), fc::Bullet);  // •
+    print() << FString{show_text.getLength(), fc::Bullet};  // •
 
   x_pos = show_text.getLength();
   return text_offset_column;
@@ -831,7 +831,7 @@ inline std::size_t FLineEdit::getCursorColumnPos()
 //----------------------------------------------------------------------
 inline const FString FLineEdit::getPasswordText() const
 {
-  return FString(text.getLength(), fc::Bullet);  // •
+  return FString{text.getLength(), fc::Bullet};  // •
 }
 
 //----------------------------------------------------------------------
diff --git a/src/flistbox.cpp b/src/flistbox.cpp
index 2a99b416..0fbf783f 100644
--- a/src/flistbox.cpp
+++ b/src/flistbox.cpp
@@ -285,7 +285,7 @@ void FListBox::clear()
 
   for (int y{0}; y < int(getHeight()) - 2; y++)
   {
-    print() << FPoint(2, 2 + y) << FString(size, L' ');
+    print() << FPoint{2, 2 + y} << FString{size, L' '};
   }
 }
 
@@ -654,7 +654,7 @@ void FListBox::init()
 {
   initScrollbar (vbar, fc::vertical, this, &FListBox::cb_vbarChange);
   initScrollbar (hbar, fc::horizontal, this, &FListBox::cb_hbarChange);
-  setGeometry (FPoint(1, 1), FSize(5, 4), false);  // initialize geometry values
+  setGeometry (FPoint{1, 1}, FSize{5, 4}, false);  // initialize geometry values
   const auto& wc = getFWidgetColors();
   setForegroundColor (wc.dialog_fg);
   setBackgroundColor (wc.dialog_bg);
@@ -735,7 +735,7 @@ void FListBox::draw()
 
     for (int y{2}; y < int(getHeight()); y++)
     {
-      print() << FPoint(int(getWidth()) - 1, y)
+      print() << FPoint{int(getWidth()) - 1, y}
               << ' ';  // clear right side of the scrollbar
     }
   }
@@ -764,7 +764,7 @@ void FListBox::draw()
 //----------------------------------------------------------------------
 void FListBox::drawBorder()
 {
-  FRect box(FPoint(1, 1), getSize());
+  FRect box(FPoint{1, 1}, getSize());
   finalcut::drawListBorder (this, box);
 }
 
@@ -789,9 +789,9 @@ void FListBox::drawHeadline()
   if ( text.isNull() || text.isEmpty() )
     return;
 
-  const FString txt(" " + text + " ");
+  const FString txt{" " + text + " "};
   const auto column_width = getColumnWidth(txt);
-  print() << FPoint(2, 1);
+  print() << FPoint{2, 1};
   const auto& wc = getFWidgetColors();
 
   if ( isEnabled() )
@@ -805,7 +805,7 @@ void FListBox::drawHeadline()
   {
     // Print ellipsis
     print() << getColumnSubString (text, 1, getClientWidth() - 2)
-            << FColorPair (wc.label_ellipsis_fg, wc.label_bg) << "..";
+            << FColorPair {wc.label_ellipsis_fg, wc.label_bg} << "..";
   }
 }
 
@@ -991,7 +991,7 @@ inline void FListBox::setLineAttributes ( int y
   const std::size_t inc_len = inc_search.getLength();
   const std::size_t inc_width = getColumnWidth(inc_search);
   const auto& wc = getFWidgetColors();
-  print() << FPoint(2, 2 + int(y));
+  print() << FPoint{2, 2 + int(y)};
 
   if ( isLineSelected )
   {
@@ -1024,7 +1024,7 @@ inline void FListBox::setLineAttributes ( int y
         setColor ( wc.selected_current_element_fg
                  , wc.selected_current_element_bg );
 
-      setCursorPos (FPoint(3, 2 + int(y)));  // first character
+      setCursorPos ({3, 2 + int(y)});  // first character
     }
     else
     {
@@ -1041,10 +1041,10 @@ inline void FListBox::setLineAttributes ( int y
         {
           serach_mark = true;
           // Place the cursor on the last found character
-          setCursorPos (FPoint(2 + b + int(inc_width), 2 + int(y)));
+          setCursorPos ({2 + b + int(inc_width), 2 + int(y)});
         }
         else  // only highlighted
-          setCursorPos (FPoint(3 + b, 2 + int(y)));  // first character
+          setCursorPos ({3 + b, 2 + int(y)});  // first character
       }
       else
         setColor ( wc.current_element_fg
@@ -1721,13 +1721,13 @@ void FListBox::changeOnResize()
 {
   if ( isNewFont() )
   {
-    vbar->setGeometry (FPoint(int(getWidth()), 2), FSize(2, getHeight() - 2));
-    hbar->setGeometry (FPoint(1, int(getHeight())), FSize(getWidth() - 2, 1));
+    vbar->setGeometry (FPoint{int(getWidth()), 2}, FSize{2, getHeight() - 2});
+    hbar->setGeometry (FPoint{1, int(getHeight())}, FSize{getWidth() - 2, 1});
   }
   else
   {
-    vbar->setGeometry (FPoint(int(getWidth()), 2), FSize(1, getHeight() - 2));
-    hbar->setGeometry (FPoint(2, int(getHeight())), FSize(getWidth() - 2, 1));
+    vbar->setGeometry (FPoint{int(getWidth()), 2}, FSize{1, getHeight() - 2});
+    hbar->setGeometry (FPoint{2, int(getHeight())}, FSize{getWidth() - 2, 1});
   }
 }
 
diff --git a/src/flistview.cpp b/src/flistview.cpp
index ae460fc0..9d769553 100644
--- a/src/flistview.cpp
+++ b/src/flistview.cpp
@@ -1522,7 +1522,7 @@ void FListView::init()
   selflist.push_back(this);
   root = selflist.begin();
   getNullIterator() = selflist.end();
-  setGeometry (FPoint(1, 1), FSize(5, 4), false);  // initialize geometry values
+  setGeometry (FPoint{1, 1}, FSize{5, 4}, false);  // initialize geometry values
   const auto& wc = getFWidgetColors();
   setForegroundColor (wc.dialog_fg);
   setBackgroundColor (wc.dialog_bg);
@@ -1650,7 +1650,7 @@ void FListView::draw()
 
     for (int y{2}; y < int(getHeight()); y++)
     {
-      print() << FPoint(int(getWidth()) - 1, y)
+      print() << FPoint{int(getWidth()) - 1, y}
               << ' ';  // clear right side of the scrollbar
     }
   }
@@ -1679,7 +1679,7 @@ void FListView::draw()
 //----------------------------------------------------------------------
 void FListView::drawBorder()
 {
-  const FRect box(FPoint(1, 1), getSize());
+  const FRect box(FPoint{1, 1}, getSize());
   finalcut::drawListBorder (this, box);
 }
 
@@ -1749,7 +1749,7 @@ void FListView::drawList()
     const int tree_offset = ( tree_view ) ? int(item->getDepth() << 1) + 1 : 0;
     const int checkbox_offset = ( item->isCheckable() ) ? 1 : 0;
     path_end = getListEnd(item);
-    print() << FPoint(2, 2 + int(y));
+    print() << FPoint{2, 2 + int(y)};
 
     // Draw one FListViewItem
     drawListLine (item, getFlags().focus, is_current_line);
@@ -1762,7 +1762,7 @@ void FListView::drawList()
         xpos = -9999;  // by moving it outside the visible area
 
       setVisibleCursor (item->isCheckable());
-      setCursorPos (FPoint(xpos, 2 + int(y)));  // first character
+      setCursorPos ({xpos, 2 + int(y)});  // first character
     }
 
     last_visible_line = iter;
@@ -1779,8 +1779,8 @@ void FListView::drawList()
   // Clean empty space after last element
   while ( y < uInt(getClientHeight()) )
   {
-    print() << FPoint(2, 2 + int(y))
-            << FString(std::size_t(getClientWidth()), ' ');
+    print() << FPoint{2, 2 + int(y)}
+            << FString{std::size_t(getClientWidth()), ' '};
     y++;
   }
 }
@@ -1795,7 +1795,7 @@ void FListView::drawListLine ( const FListViewItem* item
 
   // Print the entry
   const std::size_t indent = item->getDepth() << 1;  // indent = 2 * depth
-  FString line(getLinePrefix (item, indent));
+  FString line{getLinePrefix (item, indent)};
 
   // Print columns
   if ( ! item->column_list.empty() )
@@ -1822,21 +1822,21 @@ void FListView::drawListLine ( const FListViewItem* item
 
       // Insert alignment spaces
       if ( align_offset > 0 )
-        line += FString(align_offset, L' ');
+        line += FString{align_offset, L' '};
 
       if ( align_offset + column_width <= width )
       {
         // Insert text and trailing space
         static constexpr std::size_t leading_space = 1;
         line += getColumnSubString (text, 1, width);
-        line += FString ( leading_space + width
-                        - align_offset - column_width, L' ');
+        line += FString { leading_space + width
+                        - align_offset - column_width, L' '};
       }
       else if ( align == fc::alignRight )
       {
         // Ellipse right align text
         const std::size_t first = getColumnWidth(text) + 1 - width;
-        line += FString (L"..");
+        line += FString {L".."};
         line += getColumnSubString (text, first, width - ellipsis_length);
         line += L' ';
       }
@@ -1844,7 +1844,7 @@ void FListView::drawListLine ( const FListViewItem* item
       {
         // Ellipse left align text and center text
         line += getColumnSubString (text, 1, width - ellipsis_length);
-        line += FString (L".. ");
+        line += FString {L".. "};
       }
     }
   }
@@ -1887,7 +1887,7 @@ void FListView::clearList()
 
   for (int y{0}; y < int(getHeight()) - 2; y++)
   {
-    print() << FPoint(2, 2 + y) << FString(size, L' ');
+    print() << FPoint{2, 2 + y} << FString{size, L' '};
   }
 
   drawScrollbars();
@@ -1932,7 +1932,7 @@ inline void FListView::setLineAttributes ( bool is_current
 //----------------------------------------------------------------------
 inline FString FListView::getCheckBox (const FListViewItem* item)
 {
-  FString checkbox{};
+  FString checkbox{""};
 
   if ( isNewFont() )
   {
@@ -1963,12 +1963,12 @@ inline FString FListView::getCheckBox (const FListViewItem* item)
 inline FString FListView::getLinePrefix ( const FListViewItem* item
                                         , std::size_t indent )
 {
-  FString line{};
+  FString line{""};
 
   if ( tree_view )
   {
     if ( indent > 0 )
-      line = FString(indent, L' ');
+      line = FString{indent, L' '};
 
     if ( item->isExpandable()  )
     {
@@ -2021,7 +2021,7 @@ inline void FListView::drawSortIndicator ( std::size_t& length
 inline void FListView::drawHeaderBorder (std::size_t length)
 {
   setColor();
-  const FString line (length, fc::BoxDrawingsHorizontal);
+  const FString line {length, fc::BoxDrawingsHorizontal};
   headerline << line;  // horizontal line
 }
 
@@ -2032,7 +2032,7 @@ void FListView::drawHeadlineLabel (const headerItems::const_iterator& iter)
   // Print label text
   static constexpr std::size_t leading_space = 1;
   const auto& text = iter->name;
-  FString txt(" " + text);
+  FString txt{" " + text};
   const std::size_t width = std::size_t(iter->width);
   std::size_t column_width = getColumnWidth(txt);
   const std::size_t column_max = leading_space + width;
@@ -2144,7 +2144,7 @@ void FListView::drawBufferedHeadline()
     column_width = getColumnWidth(headerline);
 
   // Print the header line
-  print() << FPoint(2, 1);
+  print() << FPoint{2, 1};
 
   if ( left_truncated_fullwidth )
     print (fc::SingleLeftAngleQuotationMark);  // ‹
@@ -2173,7 +2173,7 @@ void FListView::drawColumnEllipsis ( const headerItems::const_iterator& iter
 
   headerline << ' '
              << getColumnSubString (text, 1, uInt(width - ellipsis_length))
-             << FColorPair (wc.label_ellipsis_fg, wc.label_bg)
+             << FColorPair {wc.label_ellipsis_fg, wc.label_bg}
              << "..";
 
   if ( iter == header.end() - 1 )  // Last element
@@ -2518,13 +2518,13 @@ void FListView::changeOnResize()
 {
   if ( isNewFont() )
   {
-    vbar->setGeometry (FPoint(int(getWidth()), 2), FSize(2, getHeight() - 2));
-    hbar->setGeometry (FPoint(1, int(getHeight())), FSize(getWidth() - 2, 1));
+    vbar->setGeometry (FPoint{int(getWidth()), 2}, FSize{2, getHeight() - 2});
+    hbar->setGeometry (FPoint{1, int(getHeight())}, FSize{getWidth() - 2, 1});
   }
   else
   {
-    vbar->setGeometry (FPoint(int(getWidth()), 2), FSize(1, getHeight() - 2));
-    hbar->setGeometry (FPoint(2, int(getHeight())), FSize(getWidth() - 2, 1));
+    vbar->setGeometry (FPoint{int(getWidth()), 2}, FSize{1, getHeight() - 2});
+    hbar->setGeometry (FPoint{2, int(getHeight())}, FSize{getWidth() - 2, 1});
   }
 }
 
diff --git a/src/fmenu.cpp b/src/fmenu.cpp
index 318fd99c..c6b24c01 100644
--- a/src/fmenu.cpp
+++ b/src/fmenu.cpp
@@ -453,7 +453,7 @@ void FMenu::init(FWidget* parent)
   setLeftPadding(1);
   setBottomPadding(1);
   setRightPadding(1);
-  setGeometry (FPoint(1, 1), FSize(10, 2), false);  // initialize geometry values
+  setGeometry (FPoint{1, 1}, FSize{10, 2}, false);  // initialize geometry values
   setTransparentShadow();
   setMenuWidget();
   hide();
@@ -531,8 +531,8 @@ void FMenu::calculateDimensions()
   const int adjust_X = adjustX(getX());
 
   // set widget geometry
-  setGeometry ( FPoint(adjust_X, getY())
-              , FSize(max_item_width + 2, getCount() + 2) );
+  setGeometry ( FPoint{adjust_X, getY()}
+              , FSize{max_item_width + 2, getCount() + 2} );
 
   // set geometry of all items
   const int item_X = 1;
@@ -540,14 +540,14 @@ void FMenu::calculateDimensions()
 
   for (auto&& item : getItemList())
   {
-    item->setGeometry (FPoint(item_X, item_Y), FSize(max_item_width, 1));
+    item->setGeometry (FPoint{item_X, item_Y}, FSize{max_item_width, 1});
 
     if ( item->hasMenu() )
     {
       const int menu_X = getTermX() + int(max_item_width) + 1;
       const int menu_Y = item->getTermY() - 2;
       // set sub-menu position
-      item->getMenu()->setPos (FPoint(menu_X, menu_Y), false);
+      item->getMenu()->setPos (FPoint{menu_X, menu_Y}, false);
     }
 
     item_Y++;
@@ -567,7 +567,7 @@ void FMenu::adjustItems()
       const int menu_Y = item->getTermY() - 2;
 
       // set sub-menu position
-      menu->setPos (FPoint(menu_X, menu_Y));
+      menu->setPos (FPoint{menu_X, menu_Y});
 
       // call sub-menu adjustItems()
       if ( menu->getCount() > 0 )
@@ -682,7 +682,7 @@ bool FMenu::mouseDownOverList (const FPoint& mouse_pos)
 {
   bool focus_changed{false};
   FPoint pos{mouse_pos};
-  pos -= FPoint(getRightPadding(), getTopPadding());
+  pos -= FPoint{getRightPadding(), getTopPadding()};
 
   for (auto&& item : getItemList())
   {
@@ -768,7 +768,7 @@ void FMenu::mouseDownSelection (FMenuItem* m_item, bool& focus_changed)
 bool FMenu::mouseUpOverList (const FPoint& mouse_pos)
 {
   FPoint pos{mouse_pos};
-  pos -= FPoint(getRightPadding(), getTopPadding());
+  pos -= FPoint{getRightPadding(), getTopPadding()};
 
   for (auto&& item : getItemList())
   {
@@ -824,7 +824,7 @@ bool FMenu::mouseUpOverList (const FPoint& mouse_pos)
 void FMenu::mouseMoveOverList (const FPoint& mouse_pos, mouseStates& ms)
 {
   FPoint pos{mouse_pos};
-  pos -= FPoint(getRightPadding(), getTopPadding());
+  pos -= FPoint{getRightPadding(), getTopPadding()};
 
   for (auto&& item : getItemList())
   {
@@ -1243,8 +1243,8 @@ void FMenu::drawItems()
 inline void FMenu::drawSeparator (int y)
 {
   const auto& wc = getFWidgetColors();
-  print() << FPoint(1, 2 + y)
-          << FColorPair(wc.menu_active_fg, wc.menu_active_bg);
+  print() << FPoint{1, 2 + y}
+          << FColorPair{wc.menu_active_fg, wc.menu_active_bg};
 
   if ( isMonochron() )
     setReverse(true);
@@ -1252,16 +1252,16 @@ inline void FMenu::drawSeparator (int y)
   if ( isNewFont() )
   {
     print (fc::NF_border_line_vertical_right);
-    FString line ( std::size_t(getWidth()) - 2
-                 , fc::BoxDrawingsHorizontal );
+    FString line { std::size_t(getWidth()) - 2
+                 , fc::BoxDrawingsHorizontal };
     print (line);
     print (fc::NF_rev_border_line_vertical_left);
   }
   else
   {
     print (fc::BoxDrawingsVerticalAndRight);
-    FString line ( std::size_t(getWidth()) - 2
-                 , fc::BoxDrawingsHorizontal);
+    FString line { std::size_t(getWidth()) - 2
+                 , fc::BoxDrawingsHorizontal};
     print (line);
     print (fc::BoxDrawingsVerticalAndLeft);
   }
@@ -1273,7 +1273,7 @@ inline void FMenu::drawSeparator (int y)
 //----------------------------------------------------------------------
 inline void FMenu::drawMenuLine (FMenuItem* m_item, int y)
 {
-  FString txt(m_item->getText());
+  FString txt{m_item->getText()};
   menuText txtdata{};
   std::size_t column_width = getColumnWidth(txt);
   const FKey accel_key   = m_item->accel_key;
@@ -1408,7 +1408,7 @@ inline void FMenu::drawSubMenuIndicator (std::size_t& startpos)
   if ( len > 0 )
   {
     // Print filling blank spaces
-    print (FString(len, L' '));
+    print (FString{len, L' '});
     // Print BlackRightPointingPointer ►
     print (fc::BlackRightPointingPointer);
     startpos = max_item_width - (c + 2);
@@ -1418,7 +1418,7 @@ inline void FMenu::drawSubMenuIndicator (std::size_t& startpos)
 //----------------------------------------------------------------------
 inline void FMenu::drawAcceleratorKey (std::size_t& startpos, FKey accel_key)
 {
-  const FString accel_name (getKeyName(accel_key));
+  const FString accel_name {getKeyName(accel_key)};
   const std::size_t c = ( has_checkable_items ) ? 1 : 0;
   const std::size_t accel_len = accel_name.getLength();
   const std::size_t len = max_item_width - (startpos + accel_len + c + 2);
@@ -1426,7 +1426,7 @@ inline void FMenu::drawAcceleratorKey (std::size_t& startpos, FKey accel_key)
   if ( len > 0 )
   {
     // Print filling blank spaces + accelerator key name
-    const FString spaces (len, L' ');
+    const FString spaces {len, L' '};
     print (spaces + accel_name);
     startpos = max_item_width - (c + 2);
   }
@@ -1477,7 +1477,7 @@ inline void FMenu::setLineAttributes (const FMenuItem* m_item, int y)
       setReverse(true);
   }
 
-  print() << FPoint(2, 2 + y);
+  print() << FPoint{2, 2 + y};
   setColor();
 }
 
@@ -1493,9 +1493,9 @@ inline void FMenu::setCursorToHotkeyPosition (FMenuItem* m_item)
     if ( is_selected )
     {
       if ( is_checkable )
-        m_item->setCursorPos (FPoint(3, 1));
+        m_item->setCursorPos({3, 1});
       else
-        m_item->setCursorPos (FPoint(2, 1));
+        m_item->setCursorPos({2, 1});
     }
   }
   else
@@ -1506,9 +1506,9 @@ inline void FMenu::setCursorToHotkeyPosition (FMenuItem* m_item)
       const auto x = getColumnWidth (m_item->getText(), hotkeypos);
 
       if ( is_checkable )
-        m_item->setCursorPos (FPoint(3 + int(x), 1));
+        m_item->setCursorPos({3 + int(x), 1});
       else
-        m_item->setCursorPos (FPoint(2 + int(x), 1));
+        m_item->setCursorPos({2 + int(x), 1});
     }
   }
 }
@@ -1621,13 +1621,21 @@ std::tuple<bool, bool> closeOpenMenus ( FMenu* menu
 {
   // Close the open menu
 
+  bool click_in_menu_structure{false};
   bool is_dialog_menu{false};
 
   if ( ! menu )
-    return std::make_tuple(false, false);
+  {
+    auto tuple = std::make_tuple(click_in_menu_structure, is_dialog_menu);
+    return tuple;
+  }
 
   if ( menu->containsMenuStructure(mouse_position) )
-    return std::make_tuple(true, false);
+  {
+    click_in_menu_structure = true;
+    auto tuple = std::make_tuple(click_in_menu_structure, is_dialog_menu);
+    return tuple;
+  }
 
   if ( menu->isDialogMenu() )
     is_dialog_menu = true;
@@ -1636,7 +1644,7 @@ std::tuple<bool, bool> closeOpenMenus ( FMenu* menu
   menu->hide();
   menu->hideSubMenus();
   menu->hideSuperMenus();
-  return std::make_tuple (false, is_dialog_menu);
+  return std::make_tuple (click_in_menu_structure, is_dialog_menu);
 }
 
 }  // namespace finalcut
diff --git a/src/fmenubar.cpp b/src/fmenubar.cpp
index 73b07fe1..02fa0ce4 100644
--- a/src/fmenubar.cpp
+++ b/src/fmenubar.cpp
@@ -68,7 +68,7 @@ void FMenuBar::hide()
   FColor fg = wc.term_fg;
   FColor bg = wc.term_bg;
   setColor (fg, bg);
-  print() << FPoint(1, 1) << FString(getDesktopWidth(), L' ');
+  print() << FPoint{1, 1} << FString{getDesktopWidth(), L' '};
   updateTerminal();
   FWindow::hide();
 }
@@ -76,7 +76,7 @@ void FMenuBar::hide()
 //----------------------------------------------------------------------
 void FMenuBar::adjustSize()
 {
-  setGeometry (FPoint(1, 1), FSize(getDesktopWidth(), 1), false);
+  setGeometry (FPoint{1, 1}, FSize{getDesktopWidth(), 1}, false);
   adjustItems();
 }
 
@@ -238,7 +238,7 @@ void FMenuBar::init()
   auto r = getRootWidget();
   auto w = r->getWidth();
   // initialize geometry values
-  setGeometry (FPoint(1, 1), FSize(w, 1), false);
+  setGeometry (FPoint{1, 1}, FSize{w, 1}, false);
   setAlwaysOnTop();
   setMenuBar(this);
   ignorePadding();
@@ -257,7 +257,7 @@ void FMenuBar::init()
 //----------------------------------------------------------------------
 void FMenuBar::calculateDimensions()
 {
-  FPoint item_pos (1, 1);
+  FPoint item_pos{1, 1};
 
   // find the maximum item width
   for (auto&& item : getItemList())
@@ -266,7 +266,7 @@ void FMenuBar::calculateDimensions()
     int item_width = len + 2;
 
     // set item geometry
-    item->setGeometry (item_pos, FSize(std::size_t(item_width), 1), false);
+    item->setGeometry (item_pos, FSize{std::size_t(item_width), 1}, false);
 
     // set menu position
     if ( item->hasMenu() )
@@ -475,7 +475,7 @@ void FMenuBar::drawItems()
   if ( list.empty() )
     return;
 
-  print() << FPoint(1, 1);
+  print() << FPoint{1, 1};
 
   if ( isMonochron() )
     setReverse(true);
@@ -499,7 +499,7 @@ inline void FMenuBar::drawItem (FMenuItem* menuitem, std::size_t& x)
   menuText txtdata{};
   txtdata.startpos = x + 1;
   txtdata.no_underline = menuitem->getFlags().no_underline;
-  FString txt(menuitem->getText());
+  FString txt{menuitem->getText()};
   std::size_t column_width = getColumnWidth(txt);
   bool is_enabled  = menuitem->isEnabled();
   bool is_selected = menuitem->isSelected();
@@ -577,13 +577,13 @@ inline void FMenuBar::setCursorToHotkeyPosition ( FMenuItem* menuitem
   if ( hotkeypos == NOT_SET )
   {
     // set cursor to the first character
-    menuitem->setCursorPos (FPoint(2, 1));
+    menuitem->setCursorPos({2, 1});
     return;
   }
 
   // set cursor to the hotkey position
   std::size_t x = getColumnWidth (menuitem->getText(), hotkeypos);
-  menuitem->setCursorPos (FPoint(2 + int(x), 1));
+  menuitem->setCursorPos({2 + int(x), 1});
 }
 
 //----------------------------------------------------------------------
@@ -632,12 +632,12 @@ inline void FMenuBar::drawEllipsis (const menuText& txtdata, std::size_t x)
     if ( txtdata.startpos < screenWidth )
     {
       // Print ellipsis
-      print() << FPoint(int(screenWidth) - 1, 1) << "..";
+      print() << FPoint{int(screenWidth) - 1, 1} << "..";
     }
     else if ( txtdata.startpos - 1 <= screenWidth )
     {
       // Hide first character from text
-      print() << FPoint(int(screenWidth), 1) << ' ';
+      print() << FPoint{int(screenWidth), 1} << ' ';
     }
   }
 }
@@ -682,7 +682,7 @@ void FMenuBar::adjustItems()
       auto menu = item->getMenu();
 
       // set menu position
-      menu->setPos (FPoint(menu->adjustX(item_X), item_Y));
+      menu->setPos (FPoint{menu->adjustX(item_X), item_Y});
 
       // call menu adjustItems()
       menu->adjustItems();
diff --git a/src/fmenuitem.cpp b/src/fmenuitem.cpp
index 776ff201..fbd174b5 100644
--- a/src/fmenuitem.cpp
+++ b/src/fmenuitem.cpp
@@ -517,7 +517,7 @@ void FMenuItem::init (FWidget* parent)
     text_width--;
   }
 
-  setGeometry (FPoint(1, 1), FSize(text_width + 2, 1), false);
+  setGeometry (FPoint{1, 1}, FSize{text_width + 2, 1}, false);
 
   if ( ! parent )
     return;
diff --git a/src/fmessagebox.cpp b/src/fmessagebox.cpp
index 0dc96df8..58174342 100644
--- a/src/fmessagebox.cpp
+++ b/src/fmessagebox.cpp
@@ -182,7 +182,7 @@ void FMessageBox::adjustSize()
 
   const int x = 1 + int((max_width - getWidth()) / 2);
   const int y = 1 + int((max_height - getHeight()) / 3);
-  setPos(FPoint(x, y), false);
+  setPos(FPoint{x, y}, false);
   FDialog::adjustSize();
 }
 
@@ -233,7 +233,7 @@ inline void FMessageBox::allocation (int button0, int button1, int button2)
   {
     button[0] = new FButton (this);
     button[0]->setText(button_text[button0]);
-    button[0]->setPos(FPoint(3, int(getHeight()) - 4), false);
+    button[0]->setPos(FPoint{3, int(getHeight()) - 4}, false);
     button[0]->setWidth(1, false);
     button[0]->setHeight(1, false);
     button[0]->setFocus();
@@ -242,7 +242,7 @@ inline void FMessageBox::allocation (int button0, int button1, int button2)
     {
       button[1] = new FButton(this);
       button[1]->setText(button_text[button1]);
-      button[1]->setPos(FPoint(17, int(getHeight()) - 4), false);
+      button[1]->setPos(FPoint{17, int(getHeight()) - 4}, false);
       button[1]->setWidth(0, false);
       button[1]->setHeight(1, false);
     }
@@ -251,7 +251,7 @@ inline void FMessageBox::allocation (int button0, int button1, int button2)
     {
       button[2] = new FButton(this);
       button[2]->setText(button_text[button2]);
-      button[2]->setPos(FPoint(32, int(getHeight()) - 4), false);
+      button[2]->setPos(FPoint{32, int(getHeight()) - 4}, false);
       button[2]->setWidth(0, false);
       button[2]->setHeight(1, false);
     }
@@ -358,7 +358,7 @@ void FMessageBox::draw()
     if ( center_text )  // center one line
       center_x = int((max_line_width - headline_width) / 2);
 
-    print() << FPoint(1 + msg_x + center_x, 4) << headline_text;
+    print() << FPoint{1 + msg_x + center_x, 4} << headline_text;
     head_offset = 2;
   }
 
@@ -371,7 +371,7 @@ void FMessageBox::draw()
     if ( center_text )  // center one line
       center_x = int((max_line_width - line_width) / 2);
 
-    print() << FPoint(1 + msg_x + center_x, 4 + head_offset + y)
+    print() << FPoint{1 + msg_x + center_x, 4 + head_offset + y}
             << line;
     y++;
   }
diff --git a/src/fmouse.cpp b/src/fmouse.cpp
index 1cffe4fc..767ac819 100644
--- a/src/fmouse.cpp
+++ b/src/fmouse.cpp
@@ -59,7 +59,7 @@ const FString FMouse::getClassName() const
 }
 
 //----------------------------------------------------------------------
-inline FPoint& FMouse::getPos()
+inline const FPoint& FMouse::getPos()
 {
   return mouse;
 }
@@ -227,7 +227,7 @@ inline FMouse::FMouseButton& FMouse::getButtonState()
 }
 
 //----------------------------------------------------------------------
-inline FPoint& FMouse::getNewPos()
+inline const FPoint& FMouse::getNewPos()
 {
   return new_mouse_position;
 }
@@ -381,8 +381,8 @@ void FMouseGPM::processEvent (struct timeval*)
         break;
     }
 
-    setPos (FPoint( std::max(gpm_ev.x, sInt16(1))
-                  , std::max(gpm_ev.y, sInt16(1)) ));
+    setPos (FPoint{ std::max(gpm_ev.x, sInt16(1))
+                  , std::max(gpm_ev.y, sInt16(1)) });
 
     if ( gpmEvent(false) == mouse_event )
       setPending(true);
@@ -618,7 +618,7 @@ void FMouseX11::processEvent (struct timeval* time)
   }
 
   setEvent();
-  setPos (FPoint(x, y));
+  setPos (FPoint{x, y});
   // Get the button state from string
   x11_button_state = uChar(btn);
   // Delete already interpreted data
@@ -844,7 +844,7 @@ void FMouseSGR::processEvent (struct timeval* time)
   }
 
   setEvent();
-  setPos (FPoint(x, y));
+  setPos (FPoint{x, y});
   // Get the button state from string
   sgr_button_state = uChar(((*p & 0x20) << 2) + btn);
   // Delete already interpreted data
@@ -1099,7 +1099,7 @@ void FMouseUrxvt::processEvent (struct timeval* time)
   }
 
   setEvent();
-  setPos (FPoint(x, y));
+  setPos (FPoint{x, y});
   urxvt_button_state = uChar(btn);
   // Delete already interpreted data
   urxvt_mouse[0] = '\0';
@@ -1234,7 +1234,7 @@ FMouseControl::~FMouseControl()  // destructor
 
 // public methods of FMouseControl
 //----------------------------------------------------------------------
-FPoint& FMouseControl::getPos()
+const FPoint& FMouseControl::getPos()
 {
   const auto& mouse_object = getMouseWithEvent();
 
diff --git a/src/foptiattr.cpp b/src/foptiattr.cpp
index e8a4df75..dbf89d17 100644
--- a/src/foptiattr.cpp
+++ b/src/foptiattr.cpp
@@ -1221,7 +1221,7 @@ bool FOptiAttr::hasNoAttribute (const FChar* const& attr)
 
 //----------------------------------------------------------------------
 inline bool FOptiAttr::hasColorChanged ( const FChar* const& term
-                                       , const FChar* const& next )
+                                       , const FChar* const& next ) const
 {
   if ( term && next )
   {
@@ -1586,7 +1586,7 @@ bool FOptiAttr::caused_reset_attributes (const char cap[], uChar test)
 }
 
 //----------------------------------------------------------------------
-inline bool FOptiAttr::hasCharsetEquivalence()
+inline bool FOptiAttr::hasCharsetEquivalence() const
 {
   // Detect if alt charset and pc charset are the same sequences
 
diff --git a/src/foptimove.cpp b/src/foptimove.cpp
index 0696a623..abfaa5ad 100644
--- a/src/foptimove.cpp
+++ b/src/foptimove.cpp
@@ -893,7 +893,7 @@ inline void FOptiMove::leftMove ( char hmove[], int& htime
 
 //----------------------------------------------------------------------
 inline bool FOptiMove::isWideMove ( int xold, int yold
-                                  , int xnew, int ynew )
+                                  , int xnew, int ynew ) const
 {
   return bool ( xnew > MOVE_LIMIT
              && xnew < int(screen_width) - 1 - MOVE_LIMIT
diff --git a/src/fprogressbar.cpp b/src/fprogressbar.cpp
index 4ec8b17d..89e42df9 100644
--- a/src/fprogressbar.cpp
+++ b/src/fprogressbar.cpp
@@ -96,12 +96,12 @@ bool FProgressbar::setShadow (bool enable)
     && getEncoding() != fc::ASCII )
   {
     setFlags().shadow = true;
-    setShadowSize(FSize(1, 1));
+    setShadowSize(FSize{1, 1});
   }
   else
   {
     setFlags().shadow = false;
-    setShadowSize(FSize(0, 0));
+    setShadowSize(FSize{0, 0});
   }
 
   return enable;
@@ -113,8 +113,8 @@ void FProgressbar::hide()
   FWidget::hide();
   const FSize shadow = hasShadow() ? FSize(1, 1) : FSize(0, 0);
   hideArea (getSize() + shadow);
-  print() << FPoint(int(getWidth()) - 4, 0)
-          << ("      ");  // hide percentage
+  print() << FPoint{int(getWidth()) - 4, 0}
+          << "      ";  // hide percentage
 }
 
 //----------------------------------------------------------------------
@@ -162,7 +162,7 @@ void FProgressbar::drawProgressLabel()
   if ( isMonochron() )
     setReverse(true);
 
-  print() << FPoint(int(getWidth()) - 3, 0);
+  print() << FPoint{int(getWidth()) - 3, 0};
 
   if ( percentage > 100 )
     print ("--- %");
@@ -177,7 +177,7 @@ void FProgressbar::drawProgressLabel()
 void FProgressbar::drawProgressBar()
 {
   std::size_t len{0};
-  print() << FPoint(1, 1);
+  print() << FPoint{1, 1};
 
   if ( percentage > 0 && percentage <= 100 )
     len = drawProgressIndicator();
@@ -202,8 +202,8 @@ std::size_t FProgressbar::drawProgressIndicator()
   const auto& wc = getFWidgetColors();
   const double length = double(bar_length * percentage) / 100;
   auto len = std::size_t(trunc(length));
-  print() << FColorPair (wc.progressbar_fg, wc.progressbar_fg)
-          << FString (len, fc::FullBlock);  // █
+  print() << FColorPair {wc.progressbar_fg, wc.progressbar_fg}
+          << FString {len, fc::FullBlock};  // █
 
   if ( len >= bar_length )
     return len;
@@ -220,7 +220,7 @@ std::size_t FProgressbar::drawProgressIndicator()
   }
   else
   {
-    print() << FColorPair(wc.progressbar_fg, wc.progressbar_bg)
+    print() << FColorPair{wc.progressbar_fg, wc.progressbar_bg}
             << fc::LeftHalfBlock;  // ▌
   }
 
@@ -238,9 +238,9 @@ void FProgressbar::drawProgressBackground (std::size_t len)
   setColor (wc.progressbar_fg, wc.progressbar_bg);
 
   if ( getMaxColor() < 16 )
-    print() << FString (bg_len, fc::MediumShade);  // ▒
+    print() << FString {bg_len, fc::MediumShade};  // ▒
   else
-    print() << FString (bg_len, L' ');
+    print() << FString {bg_len, L' '};
 }
 
 }  // namespace finalcut
diff --git a/src/fradiobutton.cpp b/src/fradiobutton.cpp
index a21f5bcd..45d17657 100644
--- a/src/fradiobutton.cpp
+++ b/src/fradiobutton.cpp
@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-e Copyright 2014-2019 Markus Gans                                      *
+* Copyright 2014-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -73,7 +73,7 @@ void FRadioButton::draw()
 //----------------------------------------------------------------------
 void FRadioButton::drawRadioButton()
 {
-  print() << FPoint(1, 1);
+  print() << FPoint{1, 1};
   setColor();
 
   if ( isMonochron() )
diff --git a/src/frect.cpp b/src/frect.cpp
index 3c93957b..9376703f 100644
--- a/src/frect.cpp
+++ b/src/frect.cpp
@@ -83,37 +83,39 @@ bool FRect::isEmpty() const
 }
 
 //----------------------------------------------------------------------
-FPoint FRect::getPos() const
+const FPoint FRect::getPos() const
 {
-  return FPoint(X1, Y1);
+  return { X1, Y1 };
 }
 
 //----------------------------------------------------------------------
-FPoint FRect::getUpperLeftPos() const
+const FPoint FRect::getUpperLeftPos() const
 {
-  return FPoint(X1, Y1);
+  return { X1, Y1 };
 }
 
 //----------------------------------------------------------------------
-FPoint FRect::getUpperRightPos() const
+const FPoint FRect::getUpperRightPos() const
 {
-  return FPoint(X2, Y1);
+  return { X2, Y1 };
 }
 
 //----------------------------------------------------------------------
-FPoint FRect::getLowerLeftPos() const
-{ return FPoint(X1, Y2); }
-
-//----------------------------------------------------------------------
-FPoint FRect::getLowerRightPos() const
+const FPoint FRect::getLowerLeftPos() const
 {
-  return FPoint(X2, Y2);
+  return { X1, Y2 };
 }
 
 //----------------------------------------------------------------------
-FSize FRect::getSize() const
+const FPoint FRect::getLowerRightPos() const
 {
-  return FSize(getWidth(), getHeight());
+  return { X2, Y2 };
+}
+
+//----------------------------------------------------------------------
+const FSize FRect::getSize() const
+{
+  return { getWidth(), getHeight() };
 }
 
 //----------------------------------------------------------------------
@@ -310,44 +312,46 @@ bool FRect::overlap (const FRect &r) const
 FRect FRect::intersect (const FRect& r) const
 {
   // intersection: this ∩ r
-  FRect new_rect{};
-  new_rect.X1 = std::max(X1, r.X1);
-  new_rect.Y1 = std::max(Y1, r.Y1);
-  new_rect.X2 = std::min(X2, r.X2);
-  new_rect.Y2 = std::min(Y2, r.Y2);
-  return new_rect;
+  int _X1 = std::max(X1, r.X1);
+  int _Y1 = std::max(Y1, r.Y1);
+  int _X2 = std::min(X2, r.X2);
+  int _Y2 = std::min(Y2, r.Y2);
+  const FPoint p1{ _X1, _Y1 };
+  const FPoint p2{ _X2, _Y2 };
+  return { p1, p2 };
 }
 
 //----------------------------------------------------------------------
 FRect FRect::combined (const FRect& r) const
 {
   // Union: this ∪ r
-  FRect new_rect{};
-  new_rect.X1 = std::min(X1, r.X1);
-  new_rect.Y1 = std::min(Y1, r.Y1);
-  new_rect.X2 = std::max(X2, r.X2);
-  new_rect.Y2 = std::max(Y2, r.Y2);
-  return new_rect;
+  int _X1 = std::min(X1, r.X1);
+  int _Y1 = std::min(Y1, r.Y1);
+  int _X2 = std::max(X2, r.X2);
+  int _Y2 = std::max(Y2, r.Y2);
+  const FPoint p1{ _X1, _Y1 };
+  const FPoint p2{ _X2, _Y2 };
+  return { p1, p2 };
 }
 
 
 // FRect non-member operators
 //----------------------------------------------------------------------
-FRect operator + (const FRect& r, const FSize& s)
+const FRect operator + (const FRect& r, const FSize& s)
 {
-  return FRect ( r.X1
-               , r.Y1
-               , std::size_t(r.X2 - r.X1) + 1 + s.getWidth()
-               , std::size_t(r.Y2 - r.Y1) + 1 + s.getHeight() );
+  return { r.X1
+         , r.Y1
+         , std::size_t(r.X2 - r.X1) + 1 + s.getWidth()
+         , std::size_t(r.Y2 - r.Y1) + 1 + s.getHeight() };
 }
 
 //----------------------------------------------------------------------
-FRect operator - (const FRect& r, const FSize& s)
+const FRect operator - (const FRect& r, const FSize& s)
 {
-  return FRect ( r.X1
-               , r.Y1
-               , std::size_t(r.X2 - r.X1) + 1 - s.getWidth()
-               , std::size_t(r.Y2 - r.Y1) + 1 - s.getHeight() );
+  return { r.X1
+         , r.Y1
+         , std::size_t(r.X2 - r.X1) + 1 - s.getWidth()
+         , std::size_t(r.Y2 - r.Y1) + 1 - s.getHeight() };
 }
 
 //----------------------------------------------------------------------
diff --git a/src/fscrollbar.cpp b/src/fscrollbar.cpp
index b7a78972..e51dfaaf 100644
--- a/src/fscrollbar.cpp
+++ b/src/fscrollbar.cpp
@@ -40,7 +40,7 @@ FScrollbar::FScrollbar(FWidget* parent)
   : FWidget(parent)
 {
   // The default scrollbar orientation is vertical
-  setGeometry(FPoint(1, 1), FSize(1, length), false);
+  setGeometry(FPoint{1, 1}, FSize{1, length}, false);
   init();
 }
 
@@ -440,7 +440,7 @@ void FScrollbar::init()
 {
   unsetFocusable();
   ignorePadding();
-  setGeometry(FPoint(1, 1), FSize(getWidth(), getHeight()));
+  setGeometry(FPoint{1, 1}, FSize{getWidth(), getHeight()});
 }
 
 //----------------------------------------------------------------------
@@ -464,7 +464,7 @@ void FScrollbar::drawVerticalBar()
 
   for (int z{1}; z <= slider_pos; z++)
   {
-    print() << FPoint(1, 1 + z);
+    print() << FPoint{1, 1 + z};
     drawVerticalBackgroundLine();
   }
 
@@ -475,7 +475,7 @@ void FScrollbar::drawVerticalBar()
 
   for (int z{1}; z <= int(slider_length); z++)  // Draw slider
   {
-    print() << FPoint(1, 1 + slider_pos + z);
+    print() << FPoint{1, 1 + slider_pos + z};
 
     if ( isNewFont() )
       print (' ');
@@ -490,7 +490,7 @@ void FScrollbar::drawVerticalBar()
 
   for (int z = slider_pos + int(slider_length) + 1; z <= int(bar_length); z++)
   {
-    print() << FPoint(1, 1 + z);
+    print() << FPoint{1, 1 + z};
     drawVerticalBackgroundLine();
   }
 
@@ -524,9 +524,9 @@ void FScrollbar::drawHorizontalBar()
   setColor (wc.scrollbar_fg, wc.scrollbar_bg);
 
   if ( isNewFont() )
-    print() << FPoint(3, 1);
+    print() << FPoint{3, 1};
   else
-    print() << FPoint(2, 1);
+    print() << FPoint{2, 1};
 
   for (int z{0}; z < slider_pos; z++)
     drawHorizontalBackgroundColumn();
@@ -571,24 +571,24 @@ void FScrollbar::drawButtons()
 
   if ( isNewFont() )
   {
-    print() << FPoint(1, 1);
+    print() << FPoint{1, 1};
 
     if ( bar_orientation == fc::vertical )
     {
       print() << NF_button_arrow_up
-              << FPoint(1, int(length))
+              << FPoint{1, int(length)}
               << NF_button_arrow_down;
     }
     else  // horizontal
     {
       print() << NF_button_arrow_left
-              << FPoint(int(length) - 1, 1)
+              << FPoint{int(length) - 1, 1}
               << NF_button_arrow_right;
     }
   }
   else
   {
-    print() << FPoint(1, 1);
+    print() << FPoint{1, 1};
 
     if ( isMonochron() )
       setReverse(true);
@@ -596,13 +596,13 @@ void FScrollbar::drawButtons()
     if ( bar_orientation == fc::vertical )
     {
       print() << fc::BlackUpPointingTriangle     // ▲
-              << FPoint(1, int(length))
+              << FPoint{1, int(length)}
               << fc::BlackDownPointingTriangle;  // ▼
     }
     else  // horizontal
     {
       print() << fc::BlackLeftPointingPointer    // ◄
-              << FPoint(int(length), 1)
+              << FPoint{int(length), 1}
               << fc::BlackRightPointingPointer;  // ►
     }
 
diff --git a/src/fscrollview.cpp b/src/fscrollview.cpp
index 58e56b7c..7f4c5d1f 100644
--- a/src/fscrollview.cpp
+++ b/src/fscrollview.cpp
@@ -276,15 +276,15 @@ void FScrollView::setGeometry ( const FPoint& pos, const FSize& size
 //----------------------------------------------------------------------
 bool FScrollView::setCursorPos (const FPoint& p)
 {
-  return FWidget::setCursorPos (FPoint ( p.getX() + getLeftPadding()
-                                       , p.getY() + getTopPadding() ));
+  return FWidget::setCursorPos ({ p.getX() + getLeftPadding()
+                                , p.getY() + getTopPadding() });
 }
 
 //----------------------------------------------------------------------
 void FScrollView::setPrintPos (const FPoint& p)
 {
-  FWidget::setPrintPos (FPoint( p.getX() + getLeftPadding()
-                              , p.getY() + getTopPadding() ));
+  FWidget::setPrintPos (FPoint { p.getX() + getLeftPadding()
+                               , p.getY() + getTopPadding() });
 }
 
 //----------------------------------------------------------------------
@@ -296,7 +296,7 @@ bool FScrollView::setViewportPrint (bool enable)
 //----------------------------------------------------------------------
 bool FScrollView::setBorder (bool enable)
 {
-  return (border = enable);
+  return (setFlags().no_border = ! enable);
 }
 
 //----------------------------------------------------------------------
@@ -424,7 +424,7 @@ void FScrollView::draw()
   else
     setColor();
 
-  if ( border )
+  if ( hasBorder() )
     drawBorder();
 
   if ( isMonochron() )
@@ -446,7 +446,7 @@ void FScrollView::draw()
 //----------------------------------------------------------------------
 void FScrollView::drawBorder()
 {
-  const FRect box(FPoint(1, 1), getSize());
+  const FRect box(FPoint{1, 1}, getSize());
   finalcut::drawListBorder (this, box);
 }
 
@@ -685,7 +685,7 @@ void FScrollView::copy2area()
 
 // private methods of FScrollView
 //----------------------------------------------------------------------
-inline FPoint FScrollView::getViewportCursorPos()
+inline const FPoint FScrollView::getViewportCursorPos()
 {
   const auto& window = FWindow::getWindowWidget(this);
 
@@ -697,10 +697,10 @@ inline FPoint FScrollView::getViewportCursorPos()
                 - viewport_geometry.getX();
     const int y = widget_offsetY + viewport->input_cursor_y
                 - viewport_geometry.getY();
-    return FPoint (x, y);
+    return { x, y };
   }
   else
-    return FPoint (-1, -1);
+    return { -1, -1 };
 }
 
 //----------------------------------------------------------------------
@@ -715,8 +715,8 @@ void FScrollView::init (const FWidget* parent)
   const auto& wc = getFWidgetColors();
   setForegroundColor (wc.dialog_fg);
   setBackgroundColor (wc.dialog_bg);
-  setGeometry (FPoint(1, 1), FSize(4, 4));
-  setMinimumSize (FSize(4, 4));
+  setGeometry (FPoint{1, 1}, FSize{4, 4});
+  setMinimumSize (FSize{4, 4});
   const int xoffset_end = int(getScrollWidth() - getViewportWidth());
   const int yoffset_end = int(getScrollHeight() - getViewportHeight());
   nf_offset = isNewFont() ? 1 : 0;
@@ -724,7 +724,7 @@ void FScrollView::init (const FWidget* parent)
   setLeftPadding (1 - getScrollX());
   setBottomPadding (1 - (yoffset_end - getScrollY()));
   setRightPadding (1 - (xoffset_end - getScrollX()) + nf_offset);
-  const FSize no_shadow(0, 0);
+  const FSize no_shadow{0, 0};
   std::size_t w = getViewportWidth();
   std::size_t h = getViewportHeight();
 
@@ -771,13 +771,13 @@ void FScrollView::calculateScrollbarPos()
 
   if ( isNewFont() )
   {
-    vbar->setGeometry (FPoint(int(width), 2), FSize(2, height - 2));
-    hbar->setGeometry (FPoint(1, int(height)), FSize(width - 2, 1));
+    vbar->setGeometry (FPoint{int(width), 2}, FSize{2, height - 2});
+    hbar->setGeometry (FPoint{1, int(height)}, FSize{width - 2, 1});
   }
   else
   {
-    vbar->setGeometry (FPoint(int(width), 2), FSize(1, height - 2));
-    hbar->setGeometry (FPoint(2, int(height)), FSize(width - 2, 1));
+    vbar->setGeometry (FPoint{int(width), 2}, FSize{1, height - 2});
+    hbar->setGeometry (FPoint{2, int(height)}, FSize{width - 2, 1});
   }
 
   vbar->resize();
@@ -842,9 +842,9 @@ void FScrollView::setViewportCursor()
   if ( ! isChild(getFocusWidget()) )
     return;
 
-  const FPoint cursor_pos ( viewport->input_cursor_x - 1
-                          , viewport->input_cursor_y - 1 );
-  const FPoint window_cursor_pos(getViewportCursorPos());
+  const FPoint cursor_pos { viewport->input_cursor_x - 1
+                          , viewport->input_cursor_y - 1 };
+  const FPoint window_cursor_pos{ getViewportCursorPos() };
   auto printarea = getCurrentPrintArea();
   printarea->input_cursor_x = window_cursor_pos.getX();
   printarea->input_cursor_y = window_cursor_pos.getY();
diff --git a/src/fspinbox.cpp b/src/fspinbox.cpp
index f3743057..c52e605d 100644
--- a/src/fspinbox.cpp
+++ b/src/fspinbox.cpp
@@ -57,7 +57,7 @@ FSpinBox::~FSpinBox()  // destructor
 void FSpinBox::setSize (const FSize& size, bool adjust)
 {
   FWidget::setSize (size, adjust);
-  FSize input_field_size(size);
+  FSize input_field_size{size};
   input_field_size.scaleBy(-2, 0);
   input_field.setSize (input_field_size, adjust);
 }
@@ -67,9 +67,9 @@ void FSpinBox::setGeometry ( const FPoint& pos, const FSize& size
                            , bool adjust )
 {
   FWidget::setGeometry (pos, size, adjust);
-  FSize input_field_size(size);
+  FSize input_field_size{size};
   input_field_size.scaleBy(-2, 0);
-  input_field.setGeometry (FPoint(1, 1), input_field_size, adjust);
+  input_field.setGeometry (FPoint{1, 1}, input_field_size, adjust);
 }
 
 //----------------------------------------------------------------------
@@ -96,12 +96,12 @@ bool FSpinBox::setShadow (bool enable)
     && getEncoding() != fc::ASCII )
   {
     setFlags().shadow = true;
-    setShadowSize(FSize(1, 1));
+    setShadowSize(FSize{1, 1});
   }
   else
   {
     setFlags().shadow = false;
-    setShadowSize(FSize(0, 0));
+    setShadowSize(FSize{0, 0});
   }
 
   return getFlags().shadow;
@@ -163,7 +163,7 @@ void FSpinBox::hide()
 {
   input_field.hide();
   FWidget::hide();
-  const FSize shadow = hasShadow() ? FSize(1, 1) : FSize(0, 0);
+  const FSize shadow = hasShadow() ? FSize{1, 1} : FSize{0, 0};
   hideArea (getSize() + shadow);
 }
 
@@ -331,24 +331,24 @@ void FSpinBox::draw()
   const FColorPair inc_button_color = [this, &wc] ()
   {
     if ( value == max )
-      return FColorPair ( wc.scrollbar_button_inactive_fg
-                        , wc.scrollbar_button_inactive_bg );
+      return FColorPair { wc.scrollbar_button_inactive_fg
+                        , wc.scrollbar_button_inactive_bg };
     else
-      return FColorPair ( wc.scrollbar_button_fg
-                        , wc.scrollbar_button_bg );
+      return FColorPair { wc.scrollbar_button_fg
+                        , wc.scrollbar_button_bg };
   }();
 
   const FColorPair dec_button_color = [this, &wc] ()
   {
     if ( value == min )
-      return FColorPair ( wc.scrollbar_button_inactive_fg
-                        , wc.scrollbar_button_inactive_bg );
+      return FColorPair { wc.scrollbar_button_inactive_fg
+                        , wc.scrollbar_button_inactive_bg };
     else
-      return FColorPair ( wc.scrollbar_button_fg
-                        , wc.scrollbar_button_bg );
+      return FColorPair { wc.scrollbar_button_fg
+                        , wc.scrollbar_button_bg };
   }();
 
-  print() << FPoint(int(getWidth()) - 1, 1)
+  print() << FPoint{int(getWidth()) - 1, 1}
           << dec_button_color
           << fc::BlackDownPointingTriangle  // ▼
           << inc_button_color
diff --git a/src/fstatusbar.cpp b/src/fstatusbar.cpp
index abbc8d06..2d7d17b9 100644
--- a/src/fstatusbar.cpp
+++ b/src/fstatusbar.cpp
@@ -101,7 +101,7 @@ bool FStatusKey::setMouseFocus(bool enable)
 //----------------------------------------------------------------------
 void FStatusKey::init (FWidget* parent)
 {
-  setGeometry (FPoint(1, 1), FSize(1, 1));
+  setGeometry (FPoint{1, 1}, FSize{1, 1});
 
   if ( parent && parent->isInstanceOf("FStatusBar") )
   {
@@ -159,7 +159,7 @@ void FStatusBar::setMessage (const FString& mgs)
 }
 
 //----------------------------------------------------------------------
-bool FStatusBar::hasActivatedKey()
+bool FStatusBar::hasActivatedKey() const
 {
   if ( ! key_list.empty() )
   {
@@ -178,7 +178,7 @@ void FStatusBar::hide()
   const FColor fg = wc.term_fg;
   const FColor bg = wc.term_bg;
   setColor (fg, bg);
-  print() << FPoint(1, 1) << FString(getDesktopWidth(), L' ');
+  print() << FPoint{1, 1} << FString{getDesktopWidth(), L' '};
   updateTerminal();
   FWindow::hide();
 }
@@ -212,7 +212,7 @@ void FStatusBar::drawMessage()
 
   const auto& wc = getFWidgetColors();
   setColor (wc.statusbar_fg, wc.statusbar_bg);
-  setPrintPos (FPoint(x, 1));
+  setPrintPos ({x, 1});
 
   if ( isMonochron() )
     setReverse(true);
@@ -309,8 +309,8 @@ void FStatusBar::clear()
 //----------------------------------------------------------------------
 void FStatusBar::adjustSize()
 {
-  setGeometry ( FPoint(1, int(getDesktopHeight()))
-              , FSize(getDesktopWidth(), 1), false );
+  setGeometry ( FPoint{1, int(getDesktopHeight())}
+              , FSize{getDesktopWidth(), 1}, false );
 }
 
 //----------------------------------------------------------------------
@@ -504,7 +504,7 @@ void FStatusBar::init()
   const std::size_t w = r->getWidth();
   const int h = int(r->getHeight());
   // initialize geometry values
-  setGeometry (FPoint(1, h), FSize(w, 1), false);
+  setGeometry (FPoint{1, h}, FSize{w, 1}, false);
   setAlwaysOnTop();
   setStatusBar(this);
   ignorePadding();
@@ -552,7 +552,7 @@ void FStatusBar::drawKeys()
     return;
   }
 
-  print() << FPoint(1, 1);
+  print() << FPoint{1, 1};
 
   if ( isMonochron() )
     setReverse(true);
diff --git a/src/fstring.cpp b/src/fstring.cpp
index 8c40bbc5..542ee14c 100644
--- a/src/fstring.cpp
+++ b/src/fstring.cpp
@@ -77,6 +77,12 @@ FString::FString (FString&& s) noexcept  // move constructor
 {
   if ( ! s.isNull() )
     _assign (std::move(s.string));
+  else
+    s.string = nullptr;
+
+  s.length = 0;
+  s.bufsize = 0;
+  s.c_string = nullptr;
 }
 
 //----------------------------------------------------------------------
@@ -188,7 +194,7 @@ const FString& FString::operator += (const FString& s)
 //----------------------------------------------------------------------
 const FString FString::operator + (const FString& s)
 {
-  FString tmp(string);
+  FString tmp{string};
   tmp._insert (length, s.length, s.string);
   return tmp;
 }
@@ -198,7 +204,7 @@ const FString FString::operator + (const wchar_t c)
 {
   wchar_t s[2]{};
   s[0] = c;
-  FString tmp(string);
+  FString tmp{string};
   tmp._insert (length, 1, s);
   return tmp;
 }
@@ -208,7 +214,7 @@ const FString FString::operator + (const char c)
 {
   wchar_t s[2]{};
   s[0] = wchar_t(c & 0xff);
-  FString tmp(string);
+  FString tmp{string};
   tmp._insert (length, 1, s);
   return tmp;
 }
@@ -223,7 +229,7 @@ FString& FString::operator << (const FString& s)
 //----------------------------------------------------------------------
 FString& FString::operator << (fc::SpecialCharacter c)
 {
-  FString s(static_cast<wchar_t>(c));
+  FString s{static_cast<wchar_t>(c)};
   _insert (length, s.length, s.string);
   return *this;
 }
@@ -231,7 +237,7 @@ FString& FString::operator << (fc::SpecialCharacter c)
 //----------------------------------------------------------------------
 FString& FString::operator << (const wchar_t c)
 {
-  FString s(c);
+  FString s{c};
   _insert (length, s.length, s.string);
   return *this;
 }
@@ -239,7 +245,7 @@ FString& FString::operator << (const wchar_t c)
 //----------------------------------------------------------------------
 FString& FString::operator << (const char c)
 {
-  FString s(c);
+  FString s{c};
   _insert (length, s.length, s.string);
   return *this;
 }
@@ -420,9 +426,9 @@ const std::string FString::toString() const
 }
 
 //----------------------------------------------------------------------
-FString FString::toLower() const
+const FString FString::toLower() const
 {
-  FString s(string);
+  FString s{*this};
   auto to_lower = [] (wchar_t& c)
                   {
                     c = wchar_t(std::towlower(std::wint_t(c)));
@@ -432,9 +438,9 @@ FString FString::toLower() const
 }
 
 //----------------------------------------------------------------------
-FString FString::toUpper() const
+const FString FString::toUpper() const
 {
-  FString s(string);
+  FString s{*this};
   auto to_upper = [] (wchar_t& c)
                   {
                     c = wchar_t(std::towupper(std::wint_t(c)));
@@ -500,7 +506,7 @@ long FString::toLong() const
   long num{0};
   long tenth_limit{LONG_MAX / 10};
   long tenth_limit_digit{LONG_MAX % 10};
-  const FString s(trim());
+  const FString s{trim()};
   const wchar_t* p = s.string;
 
   if ( ! p )
@@ -553,7 +559,7 @@ uLong FString::toULong() const
   uLong num{0};
   const uLong tenth_limit{ULONG_MAX / 10};
   const uLong tenth_limit_digit{ULONG_MAX % 10};
-  const FString s(trim());
+  const FString s{trim()};
   const wchar_t* p = s.string;
 
   if ( ! p )
@@ -633,9 +639,9 @@ double FString::toDouble() const
 }
 
 //----------------------------------------------------------------------
-FString FString::ltrim() const
+const FString FString::ltrim() const
 {
-  const FString s(string);
+  const FString s{*this};
 
   // handle NULL and empty string
   if ( ! (string && *string) )
@@ -646,13 +652,13 @@ FString FString::ltrim() const
   while ( std::iswspace(std::wint_t(*p)) )
     p++;
 
-  return FString(p);
+  return p;
 }
 
 //----------------------------------------------------------------------
-FString FString::rtrim() const
+const FString FString::rtrim() const
 {
-  FString s(string);
+  FString s{*this};
 
   // handle NULL and empty string
   if ( ! (string && *string) )
@@ -673,20 +679,20 @@ FString FString::rtrim() const
 }
 
 //----------------------------------------------------------------------
-FString FString::trim() const
+const FString FString::trim() const
 {
   // handle NULL and empty string
   if ( ! (string && *string) )
     return *this;
 
-  const FString s(ltrim());
+  const FString s{ltrim()};
   return s.rtrim();
 }
 
 //----------------------------------------------------------------------
-FString FString::left (std::size_t len) const
+const FString FString::left (std::size_t len) const
 {
-  FString s(string);
+  FString s{*this};
 
   // handle NULL and empty string
   if ( ! (string && *string) )
@@ -702,9 +708,9 @@ FString FString::left (std::size_t len) const
 }
 
 //----------------------------------------------------------------------
-FString FString::right (std::size_t len) const
+const FString FString::right (std::size_t len) const
 {
-  const FString s(string);
+  const FString s{*this};
 
   // handle NULL and empty string
   if ( ! (string && *string) )
@@ -715,13 +721,13 @@ FString FString::right (std::size_t len) const
 
   const wchar_t* p = s.string;
   p += (length - len);
-  return FString(p);
+  return p;
 }
 
 //----------------------------------------------------------------------
-FString FString::mid (std::size_t pos, std::size_t len) const
+const FString FString::mid (std::size_t pos, std::size_t len) const
 {
-  const FString s(string);
+  const FString s{*this};
 
   // handle NULL and empty string
   if ( ! (string && *string) )
@@ -734,18 +740,18 @@ FString FString::mid (std::size_t pos, std::size_t len) const
     len = length - pos + 1;
 
   if ( pos > length || pos + len - 1 > length || len == 0 )
-    return FString(L"");
+    return FString{L""};
 
   wchar_t* p = s.string;
   wchar_t* first = p + pos - 1;
   *(first + len) = '\0';
-  return FString(first);
+  return first;
 }
 
 //----------------------------------------------------------------------
 FStringList FString::split (const FString& delimiter)
 {
-  const FString s(string);
+  const FString s{*this};
   FStringList string_list{};
 
   // handle NULL and empty string
@@ -757,7 +763,7 @@ FStringList FString::split (const FString& delimiter)
 
   while ( token )
   {
-    string_list.push_back (FString(token));
+    string_list.push_back (FString{token});
     token = extractToken (&rest, nullptr, delimiter.wc_str());
   }
 
@@ -1012,9 +1018,9 @@ const FString& FString::insert (const FString& s, std::size_t pos)
 }
 
 //----------------------------------------------------------------------
-FString FString::replace (const FString& from, const FString& to)
+FString const FString::replace (const FString& from, const FString& to)
 {
-  FString s(string);
+  FString s{*this};
 
   // handle NULL and empty string
   if ( ! (string && *string) )
@@ -1051,9 +1057,9 @@ FString FString::replace (const FString& from, const FString& to)
 }
 
 //----------------------------------------------------------------------
-FString FString::replaceControlCodes() const
+const FString FString::replaceControlCodes() const
 {
-  FString s(string);
+  FString s{*this};
 
   for (auto&& c : s)
   {
@@ -1077,9 +1083,9 @@ FString FString::replaceControlCodes() const
 }
 
 //----------------------------------------------------------------------
-FString FString::expandTabs (int tabstop) const
+const FString FString::expandTabs (int tabstop) const
 {
-  FString instr(string);
+  FString instr{string};
   FString outstr{};
 
   if ( tabstop <= 0 )
@@ -1105,7 +1111,7 @@ FString FString::expandTabs (int tabstop) const
 //----------------------------------------------------------------------
 FString FString::removeDel() const
 {
-  FString s(string);
+  FString s{*this};
   std::size_t i{0};
   std::size_t count{0};
 
@@ -1135,7 +1141,7 @@ FString FString::removeDel() const
 //----------------------------------------------------------------------
 FString FString::removeBackspaces() const
 {
-  FString s(string);
+  FString s{*this};
   std::size_t i{0};
 
   for (auto&& c : s)
@@ -1546,7 +1552,7 @@ inline wchar_t* FString::extractToken ( wchar_t* rest[]
 //----------------------------------------------------------------------
 const FString operator + (const FString& s1, const FString& s2)
 {
-  FString tmp(s1);
+  FString tmp{s1};
   tmp._insert ( uInt(std::wcslen(s1.wc_str()))
               , uInt(std::wcslen(s2.wc_str()))
               , s2.wc_str() );
@@ -1556,7 +1562,7 @@ const FString operator + (const FString& s1, const FString& s2)
 //----------------------------------------------------------------------
 const FString operator + (const FString& s, const wchar_t c)
 {
-  FString tmp(s);
+  FString tmp{s};
   tmp._insert ( uInt(std::wcslen(s.wc_str())), 1, &c);
   return tmp;
 }
@@ -1564,7 +1570,7 @@ const FString operator + (const FString& s, const wchar_t c)
 //----------------------------------------------------------------------
 const FString operator + (const std::wstring& s1, const FString& s2)
 {
-  FString tmp(s1);
+  FString tmp{s1};
   tmp._insert ( uInt(std::wcslen(s1.c_str()))
               , uInt(std::wcslen(s2.wc_str()))
               , s2.wc_str() );
@@ -1574,7 +1580,7 @@ const FString operator + (const std::wstring& s1, const FString& s2)
 //----------------------------------------------------------------------
 const FString operator + (const wchar_t s1[], const FString& s2)
 {
-  FString tmp(s1);
+  FString tmp{s1};
   tmp._insert ( uInt(std::wcslen(s1))
               , uInt(std::wcslen(s2.wc_str()))
               , s2.wc_str() );
@@ -1584,7 +1590,7 @@ const FString operator + (const wchar_t s1[], const FString& s2)
 //----------------------------------------------------------------------
 const FString operator + (const std::string& s1, const FString& s2)
 {
-  FString tmp(s1);
+  FString tmp{s1};
   tmp._insert ( tmp.getLength()
               , uInt(std::wcslen(s2.wc_str()))
               , s2.wc_str() );
@@ -1594,7 +1600,7 @@ const FString operator + (const std::string& s1, const FString& s2)
 //----------------------------------------------------------------------
 const FString operator + (const char s1[], const FString& s2)
 {
-  FString tmp(s1);
+  FString tmp{s1};
   tmp._insert ( tmp.getLength()
               , uInt(std::wcslen(s2.wc_str()))
               , s2.wc_str() );
@@ -1604,7 +1610,7 @@ const FString operator + (const char s1[], const FString& s2)
 //----------------------------------------------------------------------
 const FString operator + (const wchar_t c, const FString& s)
 {
-  FString tmp(c);
+  FString tmp{c};
   tmp._insert (1, uInt(std::wcslen(s.wc_str())), s.wc_str());
   return tmp;
 }
@@ -1612,7 +1618,7 @@ const FString operator + (const wchar_t c, const FString& s)
 //----------------------------------------------------------------------
 const FString operator + (const char c, const FString& s)
 {
-  FString tmp(c);
+  FString tmp{c};
   tmp._insert (1, uInt(std::wcslen(s.wc_str())), s.wc_str());
   return tmp;
 }
@@ -1620,7 +1626,7 @@ const FString operator + (const char c, const FString& s)
 //----------------------------------------------------------------------
 const FString operator + (const FString& s, const char c)
 {
-  FString tmp1(s);
+  FString tmp1{s};
   wchar_t tmp2[2];
   tmp2[0] = wchar_t(c & 0xff);
   tmp2[1] = L'\0';
@@ -1639,7 +1645,7 @@ std::ostream& operator << (std::ostream& outstr, const FString& s)
   }
   else if ( width > 0 )
   {
-    const FString fill_str(width, outstr.fill());
+    const FString fill_str{width, outstr.fill()};
     outstr << s.wc_to_c_str(fill_str.string);
   }
 
@@ -1673,7 +1679,7 @@ std::wostream& operator << (std::wostream& outstr, const FString& s)
   }
   else if ( width > 0 )
   {
-    const FString fill_str(width, outstr.fill());
+    const FString fill_str{width, outstr.fill()};
     outstr << fill_str.string;
   }
 
diff --git a/src/fswitch.cpp b/src/fswitch.cpp
index d64e35eb..826619ea 100644
--- a/src/fswitch.cpp
+++ b/src/fswitch.cpp
@@ -130,7 +130,7 @@ void FSwitch::draw()
 //----------------------------------------------------------------------
 void FSwitch::drawCheckButton()
 {
-  print() << FPoint(1 + int(switch_offset_pos), 1);
+  print() << FPoint{1 + int(switch_offset_pos), 1};
 
   if ( isChecked() )
     drawChecked();
@@ -179,13 +179,13 @@ inline void FSwitch::drawChecked()
   if ( isMonochron() || getMaxColor() < 16 )
     setBold(false);
 
-  print() << FColorPair(wc.button_inactive_fg, wc.button_inactive_bg)
+  print() << FColorPair{wc.button_inactive_fg, wc.button_inactive_bg}
           << off;
 
   if ( isMonochron() )
     setReverse(false);
 
-  setCursorPos (FPoint(3 + int(switch_offset_pos), 1));
+  setCursorPos ({3 + int(switch_offset_pos), 1});
 }
 
 //----------------------------------------------------------------------
@@ -233,7 +233,7 @@ inline void FSwitch::drawUnchecked()
   if ( isMonochron() || getMaxColor() < 16 )
     setBold(false);
 
-  setCursorPos (FPoint(7 + int(switch_offset_pos), 1));
+  setCursorPos ({7 + int(switch_offset_pos), 1});
 }
 
 }  // namespace finalcut
diff --git a/src/fterm.cpp b/src/fterm.cpp
index 3f3b7cb0..63bfc663 100644
--- a/src/fterm.cpp
+++ b/src/fterm.cpp
@@ -2324,7 +2324,7 @@ bool FTerm::init_terminal()
   }
   catch (const std::system_error& ex)
   {
-    FString msg = "FTerm: " + FString(ex.what());
+    FString msg = "FTerm: " + FString{ex.what()};
     data->setExitMessage(msg);
     FApplication::exit(EXIT_FAILURE);
     return false;
diff --git a/src/fterm_functions.cpp b/src/fterm_functions.cpp
index 1f439f59..a28bde33 100644
--- a/src/fterm_functions.cpp
+++ b/src/fterm_functions.cpp
@@ -191,7 +191,7 @@ const wchar_t reverse_newfont_list[] =
 //----------------------------------------------------------------------
 uInt env2uint (const char* env)
 {
-  const FString str(getenv(env));
+  const FString str{getenv(env)};
 
   if ( str.isEmpty() )
     return 0;
@@ -300,11 +300,11 @@ uChar unicode_to_cp437 (wchar_t ucs)
 }
 
 //----------------------------------------------------------------------
-FString getFullWidth (const FString& str)
+const FString getFullWidth (const FString& str)
 {
   // Converts half-width to full-width characters
 
-  FString s(str);
+  FString s{str};
   constexpr std::size_t HALF = 0;
   constexpr std::size_t FULL = 1;
 
@@ -328,11 +328,11 @@ FString getFullWidth (const FString& str)
 }
 
 //----------------------------------------------------------------------
-FString getHalfWidth (const FString& str)
+const FString getHalfWidth (const FString& str)
 {
   // Converts full-width to half-width characters
 
-  FString s(str);
+  FString s{str};
   constexpr std::size_t HALF = 0;
   constexpr std::size_t FULL = 1;
 
@@ -356,17 +356,18 @@ FString getHalfWidth (const FString& str)
 }
 
 //----------------------------------------------------------------------
-FString getColumnSubString ( const FString& str
-                           , std::size_t col_pos, std::size_t col_len )
+const FString getColumnSubString ( const FString& str
+                                 , std::size_t col_pos
+                                 , std::size_t col_len )
 {
-  FString s(str);
+  FString s{str};
   std::size_t col_first{1};
   std::size_t col_num{0};
   std::size_t first{1};
   std::size_t num{0};
 
   if ( col_len == 0 || s.isEmpty() )
-    return FString(L"");
+    return FString{L""};
 
   if ( col_pos == 0 )
     col_pos = 1;
@@ -406,7 +407,7 @@ FString getColumnSubString ( const FString& str
   }
 
   if ( col_first < col_pos )  // String length < col_pos
-    return FString(L"");
+    return FString{L""};
 
   return s.mid(first, num);
 }
diff --git a/src/ftermbuffer.cpp b/src/ftermbuffer.cpp
index b6f5daac..fa8cd5fb 100644
--- a/src/ftermbuffer.cpp
+++ b/src/ftermbuffer.cpp
@@ -55,7 +55,7 @@ const FString FTermBuffer::toString() const
                      return fchar.ch;
                    }
                  );
-  return FString(wide_string);
+  return wide_string;
 }
 
 //----------------------------------------------------------------------
diff --git a/src/ftermcap.cpp b/src/ftermcap.cpp
index 33352d0b..e241e184 100644
--- a/src/ftermcap.cpp
+++ b/src/ftermcap.cpp
@@ -230,7 +230,7 @@ void FTermcap::termcapKeys (char*& buffer)
 {
   // Get termcap keys
 
-  // Read termcap key sequences
+  // Read termcap key sequences up to the self-defined values
   for ( std::size_t i{0};
         fc::fkey[i].string == nullptr && fc::fkey[i].tname[0] != 0;
         i++ )
diff --git a/src/ftermdetection.cpp b/src/ftermdetection.cpp
index 76a71ce0..cc536aa0 100644
--- a/src/ftermdetection.cpp
+++ b/src/ftermdetection.cpp
@@ -667,7 +667,7 @@ const char* FTermDetection::parseSecDA (const char current_termtype[])
     return current_termtype;
 
   // remove the first 3 bytes ("\033[>")
-  FString temp(sec_da->right(sec_da->getLength() - 3));
+  FString temp{sec_da->right(sec_da->getLength() - 3)};
   // remove the last byte ("c")
   temp.remove(temp.getLength() - 1, 1);
   // split into components
diff --git a/src/ftermxterminal.cpp b/src/ftermxterminal.cpp
index 4e866281..ea700a4e 100644
--- a/src/ftermxterminal.cpp
+++ b/src/ftermxterminal.cpp
@@ -716,7 +716,7 @@ const FString FTermXTerminal::captureXTermFont()
         if ( n >= 5 && temp[n - 1] == BEL[0] && temp[n] == '\0' )
           temp[n - 1] = '\0';
 
-        return FString(temp);
+        return FString{temp};
       }
     }
   }
diff --git a/src/ftextview.cpp b/src/ftextview.cpp
index c860b7ef..35839b15 100644
--- a/src/ftextview.cpp
+++ b/src/ftextview.cpp
@@ -57,14 +57,14 @@ FTextView::~FTextView()  // destructor
 const FString FTextView::getText() const
 {
   if ( data.empty() )
-    return FString("");
+    return FString{""};
 
   std::size_t len{0};
 
   for (auto&& line : data)
     len += line.getLength() + 1;  // String length + '\n'
 
-  FString s(len);  // Reserves storage
+  FString s{len};  // Reserves storage
   auto iter = s.begin();
 
   for (auto&& line : data)
@@ -202,7 +202,7 @@ void FTextView::insert (const FString& str, int pos)
   if ( str.isEmpty() )
     s = "\n";
   else
-    s = FString(str).rtrim().expandTabs(getTabstop());
+    s = FString{str}.rtrim().expandTabs(getTabstop());
 
 
   auto text_split = s.split("\r\n");
@@ -303,8 +303,8 @@ void FTextView::clear()
 
   for (int y{0}; y < int(getTextHeight()); y++)
   {
-    print() << FPoint(2, 2 - nf_offset + y)
-            << FString(size, L' ');
+    print() << FPoint{2, 2 - nf_offset + y}
+            << FString{size, L' '};
   }
 
   updateTerminal();
@@ -601,7 +601,7 @@ void FTextView::draw()
     }
   }
 
-  setCursorPos (FPoint(int(getWidth()), int(getHeight())));
+  setCursorPos ({int(getWidth()), int(getHeight())});
   updateTerminal();
   flush();
 }
@@ -614,7 +614,7 @@ void FTextView::drawBorder()
     if ( isMonochron() )
       setReverse(true);
 
-    const FRect box(FPoint(1, 1), getSize());
+    const FRect box{FPoint{1, 1}, getSize()};
     finalcut::drawListBorder (this, box);
 
     if ( isMonochron() )
@@ -660,7 +660,7 @@ void FTextView::drawText()
     const FString line(getColumnSubString(data[n], pos, text_width));
     const auto column_width = getColumnWidth(line);
     std::size_t trailing_whitespace{0};
-    print() << FPoint(2, 2 - nf_offset + int(y));
+    print() << FPoint{2, 2 - nf_offset + int(y)};
 
     for (auto&& ch : line)  // Column loop
     {
@@ -675,7 +675,7 @@ void FTextView::drawText()
     if ( column_width <= text_width )
       trailing_whitespace = text_width - column_width;
 
-    print() << FString(trailing_whitespace, L' ');
+    print() << FString{trailing_whitespace, L' '};
   }
 
   if ( isMonochron() )
@@ -691,10 +691,10 @@ inline bool FTextView::useFDialogBorder()
   if ( parent
     && parent->isDialogWidget()
     && isPaddingIgnored()
-    && getGeometry() == FRect ( 1
+    && getGeometry() == FRect { 1
                               , 2
                               , parent->getWidth()
-                              , parent->getHeight() - 1) )
+                              , parent->getHeight() - 1} )
   {
     use_fdialog_border = true;
   }
@@ -730,13 +730,13 @@ void FTextView::changeOnResize()
 
   if ( isNewFont() )
   {
-    vbar->setGeometry (FPoint(int(width), 1), FSize(2, height - 1));
-    hbar->setGeometry (FPoint(1, int(height)), FSize(width - 2, 1));
+    vbar->setGeometry (FPoint{int(width), 1}, FSize{2, height - 1});
+    hbar->setGeometry (FPoint{1, int(height)}, FSize{width - 2, 1});
   }
   else
   {
-    vbar->setGeometry (FPoint(int(width), 2), FSize(1, height - 2));
-    hbar->setGeometry (FPoint(2, int(height)), FSize(width - 2, 1));
+    vbar->setGeometry (FPoint{int(width), 2}, FSize{1, height - 2});
+    hbar->setGeometry (FPoint{2, int(height)}, FSize{width - 2, 1});
   }
 
   vbar->resize();
diff --git a/src/ftogglebutton.cpp b/src/ftogglebutton.cpp
index 94d1fd07..4e702110 100644
--- a/src/ftogglebutton.cpp
+++ b/src/ftogglebutton.cpp
@@ -85,7 +85,7 @@ void FToggleButton::setSize (const FSize& s, bool adjust)
 {
   // Set the toggle button size
 
-  FSize size(s);
+  FSize size{s};
   correctSize(size);
   const FRect geometry(getPos(), size);
 
@@ -101,7 +101,7 @@ void FToggleButton::setGeometry ( const FPoint& pos, const FSize& s
 {
   // Set the toggle button geometry
 
-  FSize size(s);
+  FSize size{s};
   correctSize(size);
   const FRect geometry(pos, size);
 
@@ -402,7 +402,7 @@ void FToggleButton::draw()
 
   // set the cursor to the button
   if ( isRadioButton() || isCheckboxButton() )
-    setCursorPos (FPoint(2, 1));
+    setCursorPos ({2, 1});
 }
 
 //----------------------------------------------------------------------
@@ -414,7 +414,7 @@ void FToggleButton::drawLabel()
   const FString txt(text);
   FString label_text{};
   auto hotkeypos = finalcut::getHotkeyPos(txt, label_text);
-  print() << FPoint(1 + int(label_offset_pos), 1);
+  print() << FPoint{1 + int(label_offset_pos), 1};
   drawText (std::move(label_text), hotkeypos);
 }
 
@@ -496,7 +496,7 @@ void FToggleButton::setGroup (FButtonGroup* btngroup)
 //----------------------------------------------------------------------
 void FToggleButton::init()
 {
-  setGeometry (FPoint(1, 1), FSize(4, 1), false);  // initialize geometry values
+  setGeometry (FPoint{1, 1}, FSize{4, 1}, false);  // initialize geometry values
   const auto& wc = getFWidgetColors();
 
   if ( isEnabled() )
diff --git a/src/ftooltip.cpp b/src/ftooltip.cpp
index 76273a1c..31cfbf13 100644
--- a/src/ftooltip.cpp
+++ b/src/ftooltip.cpp
@@ -105,8 +105,8 @@ void FToolTip::init()
   setAlwaysOnTop();
   ignorePadding();
   // initialize geometry values
-  setGeometry (FPoint(1, 1), FSize(3, 3), false);
-  setMinimumSize (FSize(3, 3));
+  setGeometry (FPoint{1, 1}, FSize{3, 3}, false);
+  setMinimumSize (FSize{3, 3});
   const auto& wc = getFWidgetColors();
   setForegroundColor (wc.tooltip_fg);
   setBackgroundColor (wc.tooltip_bg);
@@ -127,7 +127,7 @@ void FToolTip::draw()
 
   for (auto&& line : text_components)
   {
-    print() << FPoint(x, y) << line;
+    print() << FPoint{x, y} << line;
     y++;
   }
 }
@@ -164,7 +164,7 @@ void FToolTip::calculateDimensions()
   else
     x = y = 1;
 
-  setGeometry (FPoint(x, y), FSize(w, h));
+  setGeometry (FPoint{x, y}, FSize{w, h});
 }
 
 //----------------------------------------------------------------------
diff --git a/src/fvterm.cpp b/src/fvterm.cpp
index 7efb05e5..7af39da3 100644
--- a/src/fvterm.cpp
+++ b/src/fvterm.cpp
@@ -103,15 +103,15 @@ FVTerm& FVTerm::operator << (const FTermBuffer& term_buffer)
 
 // public methods of FVTerm
 //----------------------------------------------------------------------
-FPoint FVTerm::getPrintCursor()
+const FPoint FVTerm::getPrintCursor()
 {
   const auto& win = getPrintArea();
 
   if ( win )
-    return FPoint ( win->offset_left + win->cursor_x
-                  , win->offset_top + win->cursor_y );
+    return { win->offset_left + win->cursor_x
+           , win->offset_top + win->cursor_y };
 
-  return FPoint(0, 0);
+  return {0, 0};
 }
 
 //----------------------------------------------------------------------
@@ -217,8 +217,8 @@ void FVTerm::createVTerm (const FSize& size)
 {
   // initialize virtual terminal
 
-  const FRect box(0, 0, size.getWidth(), size.getHeight());
-  const FSize shadow(0, 0);
+  const FRect box{0, 0, size.getWidth(), size.getHeight()};
+  const FSize shadow{0, 0};
   createArea (box, shadow, vterm);
 }
 
@@ -227,8 +227,8 @@ void FVTerm::resizeVTerm (const FSize& size)
 {
   // resize virtual terminal
 
-  const FRect box(0, 0, size.getWidth(), size.getHeight());
-  const FSize shadow(0, 0);
+  const FRect box{0, 0, size.getWidth(), size.getHeight()};
+  const FSize shadow{0, 0};
   resizeArea (box, shadow, vterm);
 }
 
@@ -766,7 +766,7 @@ void FVTerm::resizeArea ( const FRect& box
   area->bottom_shadow = bsh;
   area->has_changes   = false;
 
-  const FSize size(full_width, full_height);
+  const FSize size{full_width, full_height};
   setTextToDefault (area, size);
 }
 
@@ -828,7 +828,7 @@ void FVTerm::restoreVTerm (const FRect& box)
     {
       const int xpos = x + tx;
       auto tc = &vterm->data[ypos * vterm->width + xpos];  // terminal character
-      auto sc = generateCharacter(FPoint(xpos, ypos));  // shown character
+      auto sc = generateCharacter(FPoint{xpos, ypos});  // shown character
       std::memcpy (tc, &sc, sizeof(*tc));
     }
 
@@ -866,9 +866,9 @@ bool FVTerm::updateVTermCursor (const FTermArea* area)
     const int x  = ax + cx;
     const int y  = ay + cy;
 
-    if ( isInsideArea (FPoint(cx, cy), area)
-      && isInsideTerminal (FPoint(x, y))
-      && isCovered (FPoint(x, y), area) == non_covered )
+    if ( isInsideArea (FPoint{cx, cy}, area)
+      && isInsideTerminal (FPoint{x, y})
+      && isCovered (FPoint{x, y}, area) == non_covered )
     {
       vterm->input_cursor_x = x;
       vterm->input_cursor_y = y;
@@ -1038,7 +1038,7 @@ void FVTerm::putArea (const FTermArea* area)
 
       tx -= ol;
 
-      if ( updateVTermCharacter(area, FPoint(x, y), FPoint(tx, ty)) )
+      if ( updateVTermCharacter(area, FPoint{x, y}, FPoint{tx, ty}) )
         modified = true;
 
       if ( ! modified )
@@ -1121,7 +1121,7 @@ void FVTerm::putArea (const FPoint& pos, const FTermArea* area)
         const int cy = ay + y;
         ac = &area->data[y * width + ol + x];
         tc = &vterm->data[cy * vterm->width + cx];
-        putAreaCharacter (FPoint(cx + 1, cy + 1), area->widget, ac, tc);
+        putAreaCharacter (FPoint{cx + 1, cy + 1}, area->widget, ac, tc);
       }
     }
 
@@ -1178,7 +1178,7 @@ void FVTerm::scrollAreaForward (FTermArea* area)
   {
     setTermXY (0, vdesktop->height);
     FTerm::scrollTermForward();
-    putArea (FPoint(1, 1), vdesktop);
+    putArea (FPoint{1, 1}, vdesktop);
 
     // avoid update lines from 0 to (y_max - 1)
     for (int y{0}; y < y_max; y++)
@@ -1233,7 +1233,7 @@ void FVTerm::scrollAreaReverse (FTermArea* area)
   {
     setTermXY (0, 0);
     FTerm::scrollTermReverse();
-    putArea (FPoint(1, 1), vdesktop);
+    putArea (FPoint{1, 1}, vdesktop);
 
     // avoid update lines from 1 to y_max
     for (int y{1}; y <= y_max; y++)
@@ -1440,9 +1440,9 @@ FVTerm::covered_state FVTerm::isCovered ( const FPoint& pos
 
       const int win_x = win->offset_left;
       const int win_y = win->offset_top;
-      const FRect geometry ( win_x , win_y
+      const FRect geometry { win_x , win_y
           , std::size_t(win->width) + std::size_t(win->right_shadow)
-          , std::size_t(win->height) + std::size_t(win->bottom_shadow) );
+          , std::size_t(win->height) + std::size_t(win->bottom_shadow) };
 
       if ( found && geometry.contains(pos) )
       {
@@ -1490,7 +1490,7 @@ void FVTerm::updateOverlappedColor ( const FTermArea* area
   FChar nc{};
   std::memcpy (&nc, ac, sizeof(nc));
   // Overlapped character
-  auto oc = getOverlappedCharacter (terminal_pos + FPoint(1, 1), area->widget);
+  auto oc = getOverlappedCharacter (terminal_pos + FPoint{1, 1}, area->widget);
   nc.fg_color = oc.fg_color;
   nc.bg_color = oc.bg_color;
   nc.attr.bit.reverse  = false;
@@ -1519,7 +1519,7 @@ void FVTerm::updateOverlappedCharacter ( const FTermArea* area
   const int ty = terminal_pos.getY();
   auto tc = &vterm->data[ty * vterm->width + tx];
   // Overlapped character
-  auto oc = getCoveredCharacter (terminal_pos + FPoint(1, 1), area->widget);
+  auto oc = getCoveredCharacter (terminal_pos + FPoint{1, 1}, area->widget);
   oc.attr.bit.no_changes = bool(tc->attr.bit.printed && *tc == oc);
   std::memcpy (tc, &oc, sizeof(*tc));
 }
@@ -1541,7 +1541,7 @@ void FVTerm::updateShadedCharacter ( const FTermArea* area
   // Terminal character
   const auto tc = &vterm->data[ty * vterm->width + tx];
   // Overlapped character
-  auto oc = getCoveredCharacter (terminal_pos + FPoint(1, 1), area->widget);
+  auto oc = getCoveredCharacter (terminal_pos + FPoint{1, 1}, area->widget);
   oc.fg_color = ac->fg_color;
   oc.bg_color = ac->bg_color;
   oc.attr.bit.reverse  = false;
@@ -1579,7 +1579,7 @@ void FVTerm::updateInheritBackground ( const FTermArea* area
   FChar nc{};
   std::memcpy (&nc, ac, sizeof(nc));
   // Covered character
-  auto cc = getCoveredCharacter (terminal_pos + FPoint(1, 1), area->widget);
+  auto cc = getCoveredCharacter (terminal_pos + FPoint{1, 1}, area->widget);
   nc.bg_color = cc.bg_color;
   nc.attr.bit.no_changes = bool(tc->attr.bit.printed && *tc == nc);
   std::memcpy (tc, &nc, sizeof(*tc));
@@ -1706,7 +1706,7 @@ void FVTerm::callPreprocessingHandler (const FTermArea* area)
 }
 
 //----------------------------------------------------------------------
-bool FVTerm::hasChildAreaChanges (FTermArea* area)
+bool FVTerm::hasChildAreaChanges (FTermArea* area) const
 {
   if ( ! area )
     return false;
@@ -1743,7 +1743,7 @@ bool FVTerm::isInsideArea (const FPoint& pos, const FTermArea* area)
 
   const auto aw = std::size_t(area->width);
   const auto ah = std::size_t(area->height);
-  FRect area_geometry(0, 0, aw, ah);
+  FRect area_geometry{0, 0, aw, ah};
 
   if ( area_geometry.contains(pos) )
     return true;
@@ -1752,7 +1752,7 @@ bool FVTerm::isInsideArea (const FPoint& pos, const FTermArea* area)
 }
 
 //----------------------------------------------------------------------
-FChar FVTerm::generateCharacter (const FPoint& pos)
+const FChar FVTerm::generateCharacter (const FPoint& pos)
 {
   // Generates characters for a given position considering all areas
 
@@ -1772,9 +1772,9 @@ FChar FVTerm::generateCharacter (const FPoint& pos)
 
     const int win_x = win->offset_left;
     const int win_y = win->offset_top;
-    const FRect geometry ( win_x, win_y
+    const FRect geometry { win_x, win_y
         , std::size_t(win->width) + std::size_t(win->right_shadow)
-        , std::size_t(win->height) + std::size_t(win->bottom_shadow) );
+        , std::size_t(win->height) + std::size_t(win->bottom_shadow) };
 
     // Window is visible and contains current character
     if ( geometry.contains(x, y) )
@@ -1822,7 +1822,7 @@ FChar FVTerm::generateCharacter (const FPoint& pos)
 }
 
 //----------------------------------------------------------------------
-FChar FVTerm::getCharacter ( character_type char_type
+const FChar FVTerm::getCharacter ( character_type char_type
                            , const FPoint& pos
                            , FVTerm* obj )
 {
@@ -1866,13 +1866,13 @@ FChar FVTerm::getCharacter ( character_type char_type
       if ( ! win || ! win->visible )
         continue;
 
-      const FRect geometry ( win->offset_left, win->offset_top
+      const FRect geometry { win->offset_left, win->offset_top
           , std::size_t(win->width) + std::size_t(win->right_shadow)
-          , std::size_t(win->height) + std::size_t(win->bottom_shadow) );
+          , std::size_t(win->height) + std::size_t(win->bottom_shadow) };
 
       // Window visible and contains current character
       if ( geometry.contains(x, y) )
-        getAreaCharacter (FPoint(x, y), win, cc);
+        getAreaCharacter (FPoint{x, y}, win, cc);
     }
     else if ( char_type == covered_character )
       break;
@@ -1882,14 +1882,14 @@ FChar FVTerm::getCharacter ( character_type char_type
 }
 
 //----------------------------------------------------------------------
-FChar FVTerm::getCoveredCharacter (const FPoint& pos, FVTerm* obj)
+const FChar FVTerm::getCoveredCharacter (const FPoint& pos, FVTerm* obj)
 {
   // Gets the covered character for a given position
   return getCharacter (covered_character, pos, obj);
 }
 
 //----------------------------------------------------------------------
-FChar FVTerm::getOverlappedCharacter (const FPoint& pos, FVTerm* obj)
+const FChar FVTerm::getOverlappedCharacter (const FPoint& pos, FVTerm* obj)
 {
   // Gets the overlapped character for a given position
   return getCharacter (overlapped_character, pos, obj);
@@ -1928,11 +1928,11 @@ void FVTerm::init (bool disable_alt_screen)
   std::memcpy (&next_attribute, &term_attribute, sizeof(next_attribute));
 
   // Create virtual terminal
-  FRect term_geometry (0, 0, getColumnNumber(), getLineNumber());
+  FRect term_geometry {0, 0, getColumnNumber(), getLineNumber()};
   createVTerm (term_geometry.getSize());
 
   // Create virtual desktop area
-  FSize shadow_size(0, 0);
+  FSize shadow_size{0, 0};
   createArea (term_geometry, shadow_size, vdesktop);
   vdesktop->visible = true;
   active_area = vdesktop;
@@ -2677,13 +2677,13 @@ FVTerm::exit_state FVTerm::repeatCharacter (uInt& x, uInt xmax, uInt y)
 }
 
 //----------------------------------------------------------------------
-inline bool FVTerm::isFullWidthChar (const FChar* const& ch)
+inline bool FVTerm::isFullWidthChar (const FChar* const& ch) const
 {
   return bool(ch->attr.bit.char_width == 2);
 }
 
 //----------------------------------------------------------------------
-inline bool FVTerm::isFullWidthPaddingChar (const FChar* const& ch)
+inline bool FVTerm::isFullWidthPaddingChar (const FChar* const& ch) const
 {
   return ch->attr.bit.fullwidth_padding;
 }
@@ -2844,7 +2844,7 @@ bool FVTerm::updateTerminalCursor()
     const int x = vterm->input_cursor_x;
     const int y = vterm->input_cursor_y;
 
-    if ( isInsideTerminal(FPoint(x, y)) )
+    if ( isInsideTerminal(FPoint{x, y}) )
     {
       setTermXY (x, y);
       showCursor();
@@ -2862,7 +2862,7 @@ bool FVTerm::isInsideTerminal (const FPoint& pos)
 {
   // Check whether the coordinates are within the virtual terminal
 
-  const FRect term_geometry (0, 0, getColumnNumber(), getLineNumber());
+  const FRect term_geometry {0, 0, getColumnNumber(), getLineNumber()};
 
   if ( term_geometry.contains(pos) )
     return true;
diff --git a/src/fwidget.cpp b/src/fwidget.cpp
index 4f8674a4..38999673 100644
--- a/src/fwidget.cpp
+++ b/src/fwidget.cpp
@@ -242,11 +242,11 @@ std::vector<bool>& FWidget::doubleFlatLine_ref (fc::sides side)
 }
 
 //----------------------------------------------------------------------
-FPoint FWidget::getPrintPos()
+const FPoint FWidget::getPrintPos()
 {
   const auto& cur = getPrintCursor();
-  return FPoint ( cur.getX() - woffset.getX1() - getX() + 1
-                , cur.getY() - woffset.getY1() - getY() + 1 );
+  return { cur.getX() - woffset.getX1() - getX() + 1
+         , cur.getY() - woffset.getY1() - getY() + 1 };
 }
 
 //----------------------------------------------------------------------
@@ -346,7 +346,7 @@ void FWidget::setY (int y, bool adjust)
 //----------------------------------------------------------------------
 void FWidget::setPos (const FPoint& p, bool adjust)
 {
-  FPoint pos(p);
+  FPoint pos{p};
 
   if ( getX() == pos.getX() && wsize.getX() == pos.getX()
     && getY() == pos.getY() && wsize.getY() == pos.getY() )
@@ -539,7 +539,7 @@ void FWidget::setTermSize (const FSize& size)
 
   if ( isXTerminal() )
   {
-    root_widget->wsize.setRect(FPoint(1, 1), size);
+    root_widget->wsize.setRect(FPoint{1, 1}, size);
     root_widget->adjust_wsize = root_widget->wsize;
     FTerm::setTermSize(size);  // width = columns / height = lines
     detectTermSize();
@@ -621,8 +621,8 @@ bool FWidget::setCursorPos (const FPoint& pos)
       woffsetY += (1 - area->widget->getTopPadding());
     }
 
-    setAreaCursor ( FPoint ( woffsetX + pos.getX()
-                           , woffsetY + pos.getY() )
+    setAreaCursor ( { woffsetX + pos.getX()
+                    , woffsetY + pos.getY() }
                   , flags.visible_cursor
                   , area );
     return true;
@@ -967,9 +967,9 @@ void FWidget::resize()
 {
   if ( isRootWidget() )
   {
-    const FRect old_term_geometry (getTermGeometry());
+    const FRect old_term_geometry {getTermGeometry()};
     detectTermSize();
-    FRect term_geometry (getTermGeometry());
+    FRect term_geometry {getTermGeometry()};
     term_geometry.move (-1, -1);
 
     if ( old_term_geometry.getSize() == term_geometry.getSize() )
@@ -1380,7 +1380,7 @@ void FWidget::hideArea (const FSize& size)
 
   for (int y{0}; y < int(size.getHeight()); y++)
   {
-    print() << FPoint(1, 1 + y) << FString(size.getWidth(), L' ');
+    print() << FPoint{1, 1 + y} << FString{size.getWidth(), L' '};
   }
 
   flush();
@@ -1887,7 +1887,12 @@ void FWidget::setWindowFocus (bool enable)
 //----------------------------------------------------------------------
 FWidget::FCallbackPtr FWidget::getCallbackPtr (const FCallback& cb_function)
 {
-  return *cb_function.template target<FCallbackPtr>();
+  auto ptr = cb_function.template target<FCallbackPtr>();
+
+  if ( ptr )
+    return *ptr;
+  else
+    return nullptr;
 }
 
 //----------------------------------------------------------------------
diff --git a/src/fwidget_functions.cpp b/src/fwidget_functions.cpp
index 69e807b3..db50c947 100644
--- a/src/fwidget_functions.cpp
+++ b/src/fwidget_functions.cpp
@@ -162,26 +162,26 @@ void drawTransparentShadow (FWidget* w)
   const std::size_t width = w->getWidth();
   const std::size_t height = w->getHeight();
   const auto& wcolors = FWidget::wcolors;
-  w->print() << FStyle (fc::Transparent)
-             << FPoint (int(width) + 1, 1)
+  w->print() << FStyle {fc::Transparent}
+             << FPoint {int(width) + 1, 1}
              << "  "
-             << FStyle (fc::Reset)
-             << FColorPair (wcolors.shadow_bg, wcolors.shadow_fg)
-             << FStyle (fc::ColorOverlay);
+             << FStyle {fc::Reset}
+             << FColorPair {wcolors.shadow_bg, wcolors.shadow_fg}
+             << FStyle {fc::ColorOverlay};
 
   for (std::size_t y{1}; y < height; y++)
   {
-    w->print() << FPoint(int(width) + 1, int(y) + 1) << "  ";
+    w->print() << FPoint{int(width) + 1, int(y) + 1} << "  ";
   }
 
-  w->print() << FStyle (fc::Reset) << FStyle (fc::Transparent)
-             << FPoint (1, int(height) + 1)
+  w->print() << FStyle {fc::Reset} << FStyle {fc::Transparent}
+             << FPoint {1, int(height) + 1}
              << "  "
-             << FStyle (fc::Reset)
-             << FColorPair (wcolors.shadow_bg, wcolors.shadow_fg)
-             << FStyle (fc::ColorOverlay)
-             << FString (width, L' ')
-             << FStyle (fc::Reset);
+             << FStyle {fc::Reset}
+             << FColorPair {wcolors.shadow_bg, wcolors.shadow_fg}
+             << FStyle {fc::ColorOverlay}
+             << FString {width, L' '}
+             << FStyle {fc::Reset};
 
   if ( w->isMonochron() )
     w->setReverse(false);
@@ -198,36 +198,36 @@ void drawBlockShadow (FWidget* w)
   const std::size_t width = w->getWidth();
   const std::size_t height = w->getHeight();
   const auto& wcolors = FWidget::wcolors;
-  w->print() << FPoint(int(width) + 1, 1);
+  w->print() << FPoint {int(width) + 1, 1};
 
   if ( w->isWindowWidget() )
   {
-    w->print() << FColorPair (wcolors.shadow_fg, wcolors.shadow_bg)
-               << FStyle (fc::InheritBackground);  // current background color will be ignored
+    w->print() << FColorPair {wcolors.shadow_fg, wcolors.shadow_bg}
+               << FStyle {fc::InheritBackground};  // current background color will be ignored
   }
   else if ( auto p = w->getParentWidget() )
-    w->print() << FColorPair (wcolors.shadow_fg, p->getBackgroundColor());
+    w->print() << FColorPair {wcolors.shadow_fg, p->getBackgroundColor()};
 
   w->print (fc::LowerHalfBlock);  // ▄
 
   if ( w->isWindowWidget() )
-    w->print() << FStyle (fc::InheritBackground);
+    w->print() << FStyle {fc::InheritBackground};
 
   for (std::size_t y{1}; y < height; y++)
   {
-    w->print() << FPoint(int(width) + 1, int(y) + 1)
+    w->print() << FPoint {int(width) + 1, int(y) + 1}
                << fc::FullBlock;  // █
   }
 
-  w->print() << FPoint(2, int(height) + 1);
+  w->print() << FPoint {2, int(height) + 1};
 
   if ( w->isWindowWidget() )
-    w->print() << FStyle (fc::InheritBackground);
+    w->print() << FStyle {fc::InheritBackground};
 
-  w->print() << FString(width, fc::UpperHalfBlock);  // ▀
+  w->print() << FString{width, fc::UpperHalfBlock};  // ▀
 
   if ( w->isWindowWidget() )
-    w->print() << FStyle (fc::Reset);
+    w->print() << FStyle {fc::Reset};
 }
 
 //----------------------------------------------------------------------
@@ -242,29 +242,29 @@ void clearShadow (FWidget* w)
 
   if ( w->isWindowWidget() )
   {
-    w->print() << FColorPair (wcolors.shadow_fg, wcolors.shadow_bg)
-               << FStyle (fc::InheritBackground);  // current background color will be ignored
+    w->print() << FColorPair {wcolors.shadow_fg, wcolors.shadow_bg}
+               << FStyle {fc::InheritBackground};  // current background color will be ignored
   }
   else if ( auto p = w->getParentWidget() )
-    w->print() << FColorPair (wcolors.shadow_fg, p->getBackgroundColor());
+    w->print() << FColorPair {wcolors.shadow_fg, p->getBackgroundColor()};
 
   if ( int(width) <= w->woffset.getX2() )
   {
     for (std::size_t y{1}; y <= height; y++)
     {
-      w->print() << FPoint(int(width) + 1, int(y))
+      w->print() << FPoint {int(width) + 1, int(y)}
                  << ' ';  // clear █
     }
   }
 
   if ( int(height) <= w->woffset.getY2() )
   {
-    w->print() << FPoint(2, int(height) + 1)
-               << FString(width, L' ');  // clear ▀
+    w->print() << FPoint{2, int(height) + 1}
+               << FString{width, L' '};  // clear ▀
   }
 
   if ( w->isWindowWidget() )
-    w->print() << FStyle (fc::Reset);
+    w->print() << FStyle {fc::Reset};
 }
 
 //----------------------------------------------------------------------
@@ -284,7 +284,7 @@ void drawFlatBorder (FWidget* w)
 
   for (std::size_t y{0}; y < height; y++)
   {
-    w->print() << FPoint(0, int(y) + 1);
+    w->print() << FPoint {0, int(y) + 1};
 
     if ( w->double_flatline_mask.left[uLong(y)] )
       // left+right line (on left side)
@@ -293,7 +293,7 @@ void drawFlatBorder (FWidget* w)
       // right line (on left side)
       w->print (fc::NF_rev_border_line_right);
 
-    w->print() << FPoint(int(width) + 1, int(y) + 1);
+    w->print() << FPoint {int(width) + 1, int(y) + 1};
 
     if ( w->double_flatline_mask.right[y] )
       // left+right line (on right side)
@@ -303,7 +303,7 @@ void drawFlatBorder (FWidget* w)
       w->print (fc::NF_border_line_left);
   }
 
-  w->print() << FPoint(1, 0);
+  w->print() << FPoint {1, 0};
 
   for (std::size_t x{0}; x < width; x++)
   {
@@ -315,7 +315,7 @@ void drawFlatBorder (FWidget* w)
       w->print (fc::NF_border_line_bottom);
   }
 
-  w->print() << FPoint(1, int(height) + 1);
+  w->print() << FPoint {1, int(height) + 1};
 
   for (std::size_t x{0}; x < width; x++)
   {
@@ -346,7 +346,7 @@ void clearFlatBorder (FWidget* w)
   for (std::size_t y{0}; y < height; y++)
   {
     // clear on left side
-    w->print() << FPoint(0, int(y) + 1);
+    w->print() << FPoint {0, int(y) + 1};
 
     if ( w->double_flatline_mask.left[y] )
       w->print (fc::NF_border_line_left);
@@ -354,7 +354,7 @@ void clearFlatBorder (FWidget* w)
       w->print (' ');
 
     // clear on right side
-    w->print() << FPoint(int(width) + 1, int(y) + 1);
+    w->print() << FPoint {int(width) + 1, int(y) + 1};
 
     if ( w->double_flatline_mask.right[y] )
       w->print (fc::NF_rev_border_line_right);
@@ -363,7 +363,7 @@ void clearFlatBorder (FWidget* w)
   }
 
   // clear at top
-  w->print() << FPoint(1, 0);
+  w->print() << FPoint {1, 0};
 
   for (std::size_t x{0}; x < width; x++)
   {
@@ -374,7 +374,7 @@ void clearFlatBorder (FWidget* w)
   }
 
   // clear at bottom
-  w->print() << FPoint(1, int(height) + 1);
+  w->print() << FPoint {1, int(height) + 1};
 
   for (std::size_t x{0}; x < width; x++)
   {
@@ -441,20 +441,20 @@ inline void drawBox (FWidget* w, const FRect& r)
 
   w->print() << r.getUpperLeftPos()
              << fc::BoxDrawingsDownAndRight   // ┌
-             << FString(r.getWidth() - 2, fc::BoxDrawingsHorizontal)  // ─
+             << FString{r.getWidth() - 2, fc::BoxDrawingsHorizontal}  // ─
              << fc::BoxDrawingsDownAndLeft;   // ┐
 
   for (int y = r.getY1() + 1; y < r.getY2(); y++)
   {
-    w->print() << FPoint(r.getX1(), y)
+    w->print() << FPoint{r.getX1(), y}
                << fc::BoxDrawingsVertical     // │
-               << FPoint(r.getX2(), y)
+               << FPoint{r.getX2(), y}
                << fc::BoxDrawingsVertical;    // │
   }
 
   w->print() << r.getLowerLeftPos()
              << fc::BoxDrawingsUpAndRight     // └
-             << FString(r.getWidth() - 2, fc::BoxDrawingsHorizontal)  // ─
+             << FString{r.getWidth() - 2, fc::BoxDrawingsHorizontal}  // ─
              << fc::BoxDrawingsUpAndLeft;     // ┘
 }
 
@@ -465,20 +465,20 @@ inline void drawNewFontBox (FWidget* w, const FRect& r)
 
   w->print() << r.getUpperLeftPos()
              << fc::NF_border_corner_middle_upper_left    // ┌
-             << FString(r.getWidth() - 2, fc::NF_border_line_horizontal)  // ─
+             << FString{r.getWidth() - 2, fc::NF_border_line_horizontal}  // ─
              << fc::NF_border_corner_middle_upper_right;  // ┐
 
   for (int y = r.getY1() + 1; y < r.getY2(); y++)
   {
-    w->print() << FPoint(r.getX1(), y)
+    w->print() << FPoint{r.getX1(), y}
                << fc::NF_border_line_vertical   // │
-               << FPoint(r.getX2(), y)
+               << FPoint{r.getX2(), y}
                << fc::NF_border_line_vertical;  // │
   }
 
   w->print() << r.getLowerLeftPos()
              << fc::NF_border_corner_middle_lower_left    // └
-             << FString(r.getWidth() - 2, fc::NF_border_line_horizontal)  // ─
+             << FString{r.getWidth() - 2, fc::NF_border_line_horizontal}  // ─
              << fc::NF_border_corner_middle_lower_right;  // ┘
 }
 
@@ -487,20 +487,20 @@ inline void drawNewFontListBox (FWidget* w, const FRect& r)
 {
   w->print() << r.getUpperLeftPos()
              << fc::NF_border_line_middle_left_down  // ┌
-             << FString(r.getWidth() - 2, fc::NF_border_line_horizontal)  // ─
+             << FString{r.getWidth() - 2, fc::NF_border_line_horizontal}  // ─
              << fc::NF_border_line_left_down;        // ╷
 
   for (int y = r.getY1() + 1; y < r.getY2(); y++)
   {
-    w->print() << FPoint(r.getX1(), y)
+    w->print() << FPoint{r.getX1(), y}
                << fc::NF_border_line_left   // border left ⎸
-               << FPoint(r.getX2(), y)
+               << FPoint{r.getX2(), y}
                << fc::NF_border_line_left;  // border left ⎸
   }
 
   w->print() << r.getLowerLeftPos()
              << fc::NF_border_line_middle_right_up  // └
-             << FString(r.getWidth() - 2, fc::NF_border_line_horizontal)  // ─
+             << FString{r.getWidth() - 2, fc::NF_border_line_horizontal}  // ─
              << fc::NF_border_line_left_up;         // ╵
 }
 
diff --git a/src/fwindow.cpp b/src/fwindow.cpp
index 725046ba..cfa0db00 100644
--- a/src/fwindow.cpp
+++ b/src/fwindow.cpp
@@ -47,7 +47,7 @@ FWindow::FWindow(FWidget* parent)
   : FWidget(parent)
 {
   setWindowWidget();
-  FRect geometry (getTermGeometry());
+  FRect geometry {getTermGeometry()};
   geometry.move(-1, -1);
   createArea (geometry, getShadow(), getVWin());
   addWindow (this);
@@ -174,9 +174,9 @@ bool FWindow::setTransparentShadow (bool enable)
   setFlags().shadow = setFlags().trans_shadow = enable;
 
   if ( enable )
-    setShadowSize (FSize(2, 1));
+    setShadowSize (FSize{2, 1});
   else
-    setShadowSize (FSize(0, 0));
+    setShadowSize (FSize{0, 0});
 
   return enable;
 }
@@ -191,13 +191,13 @@ bool FWindow::setShadow (bool enable)
   {
     setFlags().shadow = true;
     setFlags().trans_shadow = false;
-    setShadowSize (FSize(1, 1));
+    setShadowSize (FSize{1, 1});
   }
   else
   {
     setFlags().shadow = false;
     setFlags().trans_shadow = false;
-    setShadowSize (FSize(0, 0));
+    setShadowSize (FSize{0, 0});
   }
 
   return enable;
@@ -241,23 +241,23 @@ void FWindow::drawBorder()
 {
   if ( isNewFont() )  // Draw a newfont outer frame
   {
-    const FRect r(FPoint(1, 1), getSize());
+    const FRect r{FPoint{1, 1}, getSize()};
     print() << r.getUpperLeftPos()
             << fc::NF_border_corner_upper_left                      // ⎡
-            << FString(r.getWidth() - 2, fc::NF_border_line_upper)  // ¯
+            << FString{r.getWidth() - 2, fc::NF_border_line_upper}  // ¯
             << fc::NF_rev_border_corner_upper_right;                // ⎤
 
     for (int y = r.getY1() + 1; y < r.getY2(); y++)
     {
-      print() << FPoint(r.getX1(), y)
+      print() << FPoint{r.getX1(), y}
               << fc::NF_border_line_left        // border left ⎸
-              << FPoint(r.getX2(), y)
+              << FPoint{r.getX2(), y}
               << fc::NF_rev_border_line_right;  // border right⎹
     }
 
     print() << r.getLowerLeftPos()
             << fc::NF_border_corner_lower_left                       // ⎣
-            << FString(r.getWidth() - 2, fc::NF_border_line_bottom)  // _
+            << FString{r.getWidth() - 2, fc::NF_border_line_bottom}  // _
             << fc::NF_rev_border_corner_lower_right;                 // ⎦
   }
   else
@@ -308,7 +308,7 @@ void FWindow::setY (int y, bool adjust)
 //----------------------------------------------------------------------
 void FWindow::setPos (const FPoint& p, bool adjust)
 {
-  FPoint pos(p);
+  FPoint pos{p};
 
   if ( pos.getY() < 1 )
     pos.setY(1);
@@ -331,7 +331,7 @@ void FWindow::setWidth (std::size_t w, bool adjust)
 
   if ( isVirtualWindow() && getWidth() != old_width )
   {
-    FRect geometry (getTermGeometry());
+    FRect geometry {getTermGeometry()};
     geometry.move(-1, -1);
     resizeArea (geometry, getShadow(), getVWin());
   }
@@ -345,7 +345,7 @@ void FWindow::setHeight (std::size_t h, bool adjust)
 
   if ( isVirtualWindow() && getHeight() != old_height )
   {
-    FRect geometry (getTermGeometry());
+    FRect geometry {getTermGeometry()};
     geometry.move(-1, -1);
     resizeArea (geometry, getShadow(), getVWin());
   }
@@ -361,7 +361,7 @@ void FWindow::setSize (const FSize& size, bool adjust)
   if ( isVirtualWindow()
     && (getWidth() != old_width || getHeight() != old_height) )
   {
-    FRect geometry (getTermGeometry());
+    FRect geometry {getTermGeometry()};
     geometry.move(-1, -1);
     resizeArea (geometry, getShadow(), getVWin());
   }
@@ -374,8 +374,8 @@ void FWindow::setGeometry ( const FPoint& p, const FSize& size, bool adjust)
 
   const int old_x = getX();
   const int old_y = getY();
-  FPoint pos(p);
-  const FSize old_size(getSize());
+  FPoint pos{p};
+  const FSize old_size{getSize()};
 
   if ( pos.getY() < 1 )
     pos.setY(1);
@@ -387,7 +387,7 @@ void FWindow::setGeometry ( const FPoint& p, const FSize& size, bool adjust)
 
   if ( getSize() != old_size )
   {
-    FRect geometry (getTermGeometry());
+    FRect geometry {getTermGeometry()};
     geometry.move(-1, -1);
     resizeArea (geometry, getShadow(), getVWin());
   }
@@ -658,7 +658,7 @@ bool FWindow::zoomWindow()
     // save the current geometry
     normalGeometry = getGeometry();
     const FRect oldGeometry (getTermGeometryWithShadow());
-    setGeometry (FPoint(1, 1), FSize(getMaxWidth(), getMaxHeight()));
+    setGeometry (FPoint{1, 1}, FSize{getMaxWidth(), getMaxHeight()});
     restoreVTerm (oldGeometry);
     redraw();
   }
@@ -772,7 +772,7 @@ void FWindow::adjustSize()
   FWidget::adjustSize();
 
   if ( zoomed )
-    setGeometry (FPoint(1, 1), FSize(getMaxWidth(), getMaxHeight()), false);
+    setGeometry (FPoint{1, 1}, FSize{getMaxWidth(), getMaxHeight()}, false);
   else if ( isVirtualWindow() )
   {
     if ( getTermX() != old_x )
diff --git a/src/include/final/fapplication.h b/src/include/final/fapplication.h
index 9c7d0608..52f7a8e7 100644
--- a/src/include/final/fapplication.h
+++ b/src/include/final/fapplication.h
@@ -142,7 +142,7 @@ class FApplication : public FWidget
     static void           cmd_options (const int&, char*[]);
     static FStartOptions& getStartOptions();
     void                  findKeyboardWidget();
-    bool                  isKeyPressed();
+    bool                  isKeyPressed() const;
     void                  keyPressed();
     void                  keyReleased();
     void                  escapeKeyPressed();
diff --git a/src/include/final/fbutton.h b/src/include/final/fbutton.h
index 7d58849f..d06821ba 100644
--- a/src/include/final/fbutton.h
+++ b/src/include/final/fbutton.h
@@ -116,7 +116,7 @@ class FButton : public FWidget
     bool                isFlat() const;
     bool                isDown() const;
     bool                hasShadow() const;
-    bool                hasClickAnimation();
+    bool                hasClickAnimation() const;
 
     // Methods
     void                hide() override;
@@ -257,7 +257,7 @@ inline bool FButton::hasShadow() const
 { return getFlags().shadow; }
 
 //----------------------------------------------------------------------
-inline bool FButton::hasClickAnimation()
+inline bool FButton::hasClickAnimation() const
 { return click_animation; }
 
 }  // namespace finalcut
diff --git a/src/include/final/fcombobox.h b/src/include/final/fcombobox.h
index bccfb7ae..b88e433f 100644
--- a/src/include/final/fcombobox.h
+++ b/src/include/final/fcombobox.h
@@ -89,7 +89,7 @@ class FDropDownListBox : public FWindow
     void                setGeometry ( const FPoint&, const FSize&
                                     , bool = true ) override;
     // Inquiries
-    bool                isEmpty();
+    bool                isEmpty() const;
 
     // Methods
     void                show() override;
@@ -118,7 +118,7 @@ inline const FString FDropDownListBox::getClassName() const
 { return "FDropDownListBox"; }
 
 //----------------------------------------------------------------------
-inline bool FDropDownListBox::isEmpty()
+inline bool FDropDownListBox::isEmpty() const
 { return bool( list.getCount() == 0 ); }
 
 
@@ -178,7 +178,7 @@ class FComboBox : public FWidget
     void                setLabelOrientation (const FLineEdit::label_o);
 
     // Inquiries
-    bool                hasShadow();
+    bool                hasShadow() const;
 
     // Methods
     void                insert (const FListBoxItem&);
@@ -294,7 +294,7 @@ inline bool FComboBox::unsetEditable()
 { return setEditable(false); }
 
 //----------------------------------------------------------------------
-inline bool FComboBox::hasShadow()
+inline bool FComboBox::hasShadow() const
 { return getFlags().shadow; }
 
 //----------------------------------------------------------------------
diff --git a/src/include/final/fdialog.h b/src/include/final/fdialog.h
index d0656410..424b8d02 100644
--- a/src/include/final/fdialog.h
+++ b/src/include/final/fdialog.h
@@ -192,13 +192,13 @@ class FDialog : public FWindow
     void                  deactivateZoomButton();
     void                  leaveZoomButton (const mouseStates&);
     void                  pressZoomButton (const mouseStates&);
-    bool                  isMouseOverMenu (const FPoint&);
+    bool                  isMouseOverMenu (const FPoint&) const;
     void                  passEventToSubMenu (const mouseStates&, const FMouseEvent*);
     void                  moveSizeKey (FKeyEvent*);
     void                  raiseActivateDialog();
     void                  lowerActivateDialog();
-    bool                  isOutsideTerminal (const FPoint&);
-    bool                  isLowerRightResizeCorner (const mouseStates&);
+    bool                  isOutsideTerminal (const FPoint&) const;
+    bool                  isLowerRightResizeCorner (const mouseStates&) const;
     void                  resizeMouseDown (const mouseStates&);
     void                  resizeMouseUpMove (const mouseStates&, bool = false);
     void                  cancelMouseResize();
diff --git a/src/include/final/fevent.h b/src/include/final/fevent.h
index 1627ae0e..eeb0acca 100644
--- a/src/include/final/fevent.h
+++ b/src/include/final/fevent.h
@@ -140,18 +140,18 @@ class FMouseEvent : public FEvent  // mouse event
     FMouseEvent (fc::events, const FPoint&, int);
     ~FMouseEvent();
 
-    const    FPoint& getPos() const;
-    const    FPoint& getTermPos() const;
-    int      getX() const;
-    int      getY() const;
-    int      getTermX() const;
-    int      getTermY() const;
-    int      getButton() const;
+    const FPoint& getPos() const;
+    const FPoint& getTermPos() const;
+    int           getX() const;
+    int           getY() const;
+    int           getTermX() const;
+    int           getTermY() const;
+    int           getButton() const;
 
   private:
-    FPoint   p{};
-    FPoint   tp{};
-    int      b{};
+    FPoint  p{};
+    FPoint  tp{};
+    int     b{};
 };
 
 
@@ -167,18 +167,18 @@ class FWheelEvent : public FEvent  // wheel event
     FWheelEvent (fc::events, const FPoint&, const FPoint&, int);
     ~FWheelEvent();
 
-    const    FPoint& getPos() const;
-    const    FPoint& getTermPos() const;
-    int      getX() const;
-    int      getY() const;
-    int      getTermX() const;
-    int      getTermY() const;
-    int      getWheel() const;
+    const FPoint& getPos() const;
+    const FPoint& getTermPos() const;
+    int           getX() const;
+    int           getY() const;
+    int           getTermX() const;
+    int           getTermY() const;
+    int           getWheel() const;
 
   private:
-    FPoint   p;
-    FPoint   tp;
-    int      w;
+    FPoint  p;
+    FPoint  tp;
+    int     w;
 };
 
 
@@ -193,16 +193,16 @@ class FFocusEvent : public FEvent  // focus event
     explicit FFocusEvent (fc::events);
     ~FFocusEvent();
 
-    bool     gotFocus()  const;
-    bool     lostFocus() const;
+    bool           gotFocus()  const;
+    bool           lostFocus() const;
     fc::FocusTypes getFocusType() const;
-    void     setFocusType(fc::FocusTypes);
-    bool     isAccepted() const;
-    void     accept();
-    void     ignore();
+    void           setFocusType(fc::FocusTypes);
+    bool           isAccepted() const;
+    void           accept();
+    void           ignore();
 
   private:
-    bool     accpt{true};
+    bool           accpt{true};
     fc::FocusTypes focus_type{fc::FocusDefiniteWidget};
 };
 
diff --git a/src/include/final/ffiledialog.h b/src/include/final/ffiledialog.h
index 5c6f3479..b99da7a6 100644
--- a/src/include/final/ffiledialog.h
+++ b/src/include/final/ffiledialog.h
@@ -142,9 +142,39 @@ class FFileDialog : public FDialog
 
   private:
     // Typedef
-    struct dir_entry
+    struct FDirEntry
     {
-      std::string name;
+      // Constructor
+      FDirEntry()
+        : fifo{false}
+        , character_device{false}
+        , directory{false}
+        , block_device{false}
+        , regular_file{false}
+        , symbolic_link{false}
+        , socket{false}
+      { }
+
+      // Copy constructor
+      FDirEntry (const FDirEntry& entry)
+        : name{entry.name}
+        , fifo{entry.fifo}
+        , character_device{entry.character_device}
+        , directory{entry.directory}
+        , block_device{entry.block_device}
+        , regular_file{entry.regular_file}
+        , symbolic_link{entry.symbolic_link}
+        , socket{entry.socket}
+      { }
+
+      // Destructor
+      ~FDirEntry() = default;
+
+      // Copy assignment operator (=)
+      FDirEntry& operator = (const FDirEntry&) = default;
+
+      // Data members
+      std::string  name{};
       // Type of file
       uChar fifo             : 1;
       uChar character_device : 1;
@@ -156,7 +186,7 @@ class FFileDialog : public FDialog
       uChar                  : 1;  // padding bits
     };
 
-    typedef std::vector<dir_entry> dirEntries;
+    typedef std::vector<FDirEntry> dirEntries;
 
     // Methods
     void                 init();
@@ -168,7 +198,7 @@ class FFileDialog : public FDialog
     void                 sortDir();
     int                  readDir();
     void                 getEntry (const char* const, const struct dirent*);
-    void                 followSymLink (const char* const, dir_entry&);
+    void                 followSymLink (const char* const, FDirEntry&);
     void                 dirEntriesToList();
     void                 selectDirectoryEntry (const char* const);
     int                  changeDir (const FString&);
@@ -198,10 +228,10 @@ class FFileDialog : public FDialog
     bool             show_hidden{false};
 
     // Friend functions
-    friend bool sortByName ( const FFileDialog::dir_entry&
-                           , const FFileDialog::dir_entry& );
-    friend bool sortDirFirst ( const FFileDialog::dir_entry&
-                             , const FFileDialog::dir_entry& );
+    friend bool sortByName ( const FFileDialog::FDirEntry&
+                           , const FFileDialog::FDirEntry& );
+    friend bool sortDirFirst ( const FFileDialog::FDirEntry&
+                             , const FFileDialog::FDirEntry& );
     friend const FString fileChooser ( FWidget*
                                      , const FString&
                                      , const FString&
diff --git a/src/include/final/fkeyboard.h b/src/include/final/fkeyboard.h
index d16578aa..f04bcf0e 100644
--- a/src/include/final/fkeyboard.h
+++ b/src/include/final/fkeyboard.h
@@ -120,12 +120,12 @@ class FKeyboard final
     void                  setEscPressedCommand (const FKeyboardCommand&);
 
     // Inquiry
-    bool                  isInputDataPending();
+    bool                  isInputDataPending() const;
 
     // Methods
     static void           init();
     bool&                 unprocessedInput();
-    bool                  isKeyPressed();
+    bool                  isKeyPressed() const;
     void                  clearKeyBuffer();
     void                  clearKeyBufferOnTimeout();
     void                  fetchKeyCode();
@@ -248,7 +248,7 @@ inline void FKeyboard::setEscPressedCommand (const FKeyboardCommand& cmd)
 { escape_key_cmd = cmd; }
 
 //----------------------------------------------------------------------
-inline bool FKeyboard::isInputDataPending()
+inline bool FKeyboard::isInputDataPending() const
 { return input_data_pending; }
 //----------------------------------------------------------------------
 inline bool FKeyboard::setNonBlockingInput()
diff --git a/src/include/final/flabel.h b/src/include/final/flabel.h
index 9c884519..a0a8fc97 100644
--- a/src/include/final/flabel.h
+++ b/src/include/final/flabel.h
@@ -110,8 +110,8 @@ class FLabel : public FWidget
     void                setText (const FString&);
 
     // Inquiries
-    bool                hasEmphasis();
-    bool                hasReverseMode();
+    bool                hasEmphasis() const;
+    bool                hasReverseMode() const;
 
     // Methods
     void                hide() override;
@@ -224,11 +224,11 @@ inline void FLabel::setNumber (lDouble num, int precision)
 { setText(FString().setNumber(num, precision)); }
 
 //----------------------------------------------------------------------
-inline bool FLabel::hasEmphasis()
+inline bool FLabel::hasEmphasis() const
 { return emphasis; }
 
 //----------------------------------------------------------------------
-inline bool FLabel::hasReverseMode()
+inline bool FLabel::hasReverseMode() const
 { return reverse_mode; }
 
 //----------------------------------------------------------------------
diff --git a/src/include/final/flineedit.h b/src/include/final/flineedit.h
index e756c064..dacd50e8 100644
--- a/src/include/final/flineedit.h
+++ b/src/include/final/flineedit.h
@@ -178,7 +178,7 @@ class FLineEdit : public FWidget
 
     // Methods
     void                init();
-    bool                hasHotkey();
+    bool                hasHotkey() const;
     void                draw() override;
     void                drawInputField();
     std::size_t         printTextField();
diff --git a/src/include/final/flistbox.h b/src/include/final/flistbox.h
index adb6312c..5ae4058e 100644
--- a/src/include/final/flistbox.h
+++ b/src/include/final/flistbox.h
@@ -189,10 +189,10 @@ class FListBox : public FWidget
     void                setText (const FString&);
 
     // Inquiries
-    bool                isSelected (std::size_t);
+    bool                isSelected (std::size_t) const;
     bool                isSelected (listBoxItems::iterator) const;
     bool                isMultiSelection() const;
-    bool                hasBrackets (std::size_t);
+    bool                hasBrackets (std::size_t) const;
     bool                hasBrackets (listBoxItems::iterator) const;
 
     // Methods
@@ -250,8 +250,8 @@ class FListBox : public FWidget
     static FString&     getString (listBoxItems::iterator);
 
     // Inquiry
-    bool                isHorizontallyScrollable();
-    bool                isVerticallyScrollable();
+    bool                isHorizontallyScrollable() const;
+    bool                isVerticallyScrollable() const;
 
     // Methods
     void                init();
@@ -451,7 +451,7 @@ inline bool FListBox::setDisable()
 { return setEnable(false); }
 
 //----------------------------------------------------------------------
-inline bool FListBox::isSelected (std::size_t index)
+inline bool FListBox::isSelected (std::size_t index) const
 { return index2iterator(index - 1)->selected; }
 
 //----------------------------------------------------------------------
@@ -463,7 +463,7 @@ inline bool FListBox::isMultiSelection() const
 { return multi_select; }
 
 //----------------------------------------------------------------------
-inline bool FListBox::hasBrackets(std::size_t index)
+inline bool FListBox::hasBrackets(std::size_t index) const
 { return bool(index2iterator(index - 1)->brackets > 0); }
 
 //----------------------------------------------------------------------
@@ -534,11 +534,11 @@ void FListBox::insert ( const ItemT& item
 }
 
 //----------------------------------------------------------------------
-inline bool FListBox::isHorizontallyScrollable()
+inline bool FListBox::isHorizontallyScrollable() const
 { return bool( max_line_width + 1 >= getClientWidth() ); }
 
 //----------------------------------------------------------------------
-inline bool FListBox::isVerticallyScrollable()
+inline bool FListBox::isVerticallyScrollable() const
 { return bool( getCount() > getClientHeight() ); }
 
 //----------------------------------------------------------------------
diff --git a/src/include/final/fmessagebox.h b/src/include/final/fmessagebox.h
index e7c7cd82..de13ce09 100644
--- a/src/include/final/fmessagebox.h
+++ b/src/include/final/fmessagebox.h
@@ -168,7 +168,10 @@ inline const FString FMessageBox::getClassName() const
 
 //----------------------------------------------------------------------
 inline const FString FMessageBox::getTitlebarText() const
-{ return FDialog::getText(); }
+{
+  const FString& tb_text = FDialog::getText();  // initialize text
+  return tb_text;
+}
 
 //----------------------------------------------------------------------
 inline const FString FMessageBox::getHeadline() const
diff --git a/src/include/final/fmouse.h b/src/include/final/fmouse.h
index e85ae581..e51cac00 100644
--- a/src/include/final/fmouse.h
+++ b/src/include/final/fmouse.h
@@ -103,7 +103,7 @@ class FMouse
 
     // Accessors
     virtual const FString getClassName() const;
-    FPoint&               getPos();
+    const FPoint&         getPos();
     void                  clearEvent();
 
     // Mutators
@@ -161,7 +161,7 @@ class FMouse
 
     // Accessors
     FMouseButton&       getButtonState();
-    FPoint&             getNewPos();
+    const FPoint&       getNewPos();
     uInt16              getMaxWidth();
     uInt16              getMaxHeight();
     uInt64              getDblclickInterval();
@@ -459,7 +459,7 @@ class FMouseControl
 
     // Accessors
     virtual const FString getClassName() const;
-    FPoint&               getPos();
+    const FPoint&         getPos();
     void                  clearEvent();
 
     // Mutators
diff --git a/src/include/final/foptiattr.h b/src/include/final/foptiattr.h
index 65018ad8..349a24ce 100644
--- a/src/include/final/foptiattr.h
+++ b/src/include/final/foptiattr.h
@@ -260,7 +260,7 @@ class FOptiAttr final
     static bool   hasNoAttribute (const FChar* const&);
 
     // Methods
-    bool          hasColorChanged (const FChar* const&, const FChar* const&);
+    bool          hasColorChanged (const FChar* const&, const FChar* const&) const;
     void          resetColor (FChar*&);
     void          prevent_no_color_video_attributes (FChar*&, bool = false);
     void          deactivateAttributes (FChar*&, FChar*&);
@@ -272,7 +272,7 @@ class FOptiAttr final
     void          resetAttribute (FChar*&);
     void          reset (FChar*&);
     bool          caused_reset_attributes (const char[], uChar = all_tests);
-    bool          hasCharsetEquivalence();
+    bool          hasCharsetEquivalence() const;
     void          detectSwitchOn (const FChar* const&, const FChar* const&);
     void          detectSwitchOff (const FChar* const&, const FChar* const&);
     bool          switchOn();
diff --git a/src/include/final/foptimove.h b/src/include/final/foptimove.h
index 55e99d6a..0b516b37 100644
--- a/src/include/final/foptimove.h
+++ b/src/include/final/foptimove.h
@@ -194,7 +194,7 @@ class FOptiMove final
     void          rightMove (char[], int&, int, int);
     void          leftMove (char[], int&, int, int);
 
-    bool          isWideMove (int, int, int, int);
+    bool          isWideMove (int, int, int, int) const;
     bool          isMethod0Faster (int&, int, int);
     bool          isMethod1Faster (int&, int, int, int, int);
     bool          isMethod2Faster (int&, int, int, int);
diff --git a/src/include/final/fpoint.h b/src/include/final/fpoint.h
index 396923d2..20cb59fd 100644
--- a/src/include/final/fpoint.h
+++ b/src/include/final/fpoint.h
@@ -92,9 +92,9 @@ class FPoint
     // Friend operator functions
     friend bool operator == (const FPoint&, const FPoint&);
     friend bool operator != (const FPoint&, const FPoint&);
-    friend FPoint operator +  (const FPoint&, const FPoint&);
-    friend FPoint operator -  (const FPoint&, const FPoint&);
-    friend FPoint operator -  (const FPoint&);
+    friend const FPoint operator +  (const FPoint&, const FPoint&);
+    friend const FPoint operator -  (const FPoint&, const FPoint&);
+    friend const FPoint operator -  (const FPoint&);
     friend std::ostream& operator << (std::ostream&, const FPoint&);
     friend std::istream& operator >> (std::istream&, FPoint&);
 };
@@ -154,16 +154,16 @@ inline bool operator != (const FPoint& p1, const FPoint& p2)
 { return p1.xpos != p2.xpos || p1.ypos != p2.ypos; }
 
 //----------------------------------------------------------------------
-inline FPoint operator + (const FPoint& p1, const FPoint& p2)
-{ return FPoint(p1.xpos + p2.xpos, p1.ypos + p2.ypos); }
+inline const FPoint operator + (const FPoint& p1, const FPoint& p2)
+{ return {p1.xpos + p2.xpos, p1.ypos + p2.ypos}; }
 
 //----------------------------------------------------------------------
-inline FPoint operator - (const FPoint& p1, const FPoint& p2)
-{ return FPoint(p1.xpos - p2.xpos, p1.ypos - p2.ypos); }
+inline const FPoint operator - (const FPoint& p1, const FPoint& p2)
+{ return {p1.xpos - p2.xpos, p1.ypos - p2.ypos}; }
 
 //----------------------------------------------------------------------
-inline FPoint operator - (const FPoint& p)
-{ return FPoint(-p.xpos, -p.ypos); }
+inline const FPoint operator - (const FPoint& p)
+{ return {-p.xpos, -p.ypos}; }
 
 }  // namespace finalcut
 
diff --git a/src/include/final/fprogressbar.h b/src/include/final/fprogressbar.h
index af83df28..b7630ea3 100644
--- a/src/include/final/fprogressbar.h
+++ b/src/include/final/fprogressbar.h
@@ -82,7 +82,7 @@ class FProgressbar : public FWidget
     bool                unsetShadow();
 
     // Inquiries
-    bool                hasShadow();
+    bool                hasShadow() const;
 
     // Methods
     void                hide() override;
@@ -123,7 +123,7 @@ inline bool FProgressbar::unsetShadow()
 { return setShadow(false); }
 
 //----------------------------------------------------------------------
-inline bool FProgressbar::hasShadow()
+inline bool FProgressbar::hasShadow() const
 { return getFlags().shadow; }
 
 }  // namespace finalcut
diff --git a/src/include/final/frect.h b/src/include/final/frect.h
index af4e1cc8..b874a58e 100644
--- a/src/include/final/frect.h
+++ b/src/include/final/frect.h
@@ -80,14 +80,14 @@ class FRect
     int                   getY2() const;
     int                   getX() const;
     int                   getY() const;
-    FPoint                getPos() const;
-    FPoint                getUpperLeftPos() const;
-    FPoint                getUpperRightPos() const;
-    FPoint                getLowerLeftPos() const;
-    FPoint                getLowerRightPos() const;
+    const FPoint          getPos() const;
+    const FPoint          getUpperLeftPos() const;
+    const FPoint          getUpperRightPos() const;
+    const FPoint          getLowerLeftPos() const;
+    const FPoint          getLowerRightPos() const;
     std::size_t           getWidth() const;
     std::size_t           getHeight() const;
-    FSize                 getSize() const;
+    const FSize           getSize() const;
 
     // Mutators
     void                  setX1 (int);
@@ -137,8 +137,8 @@ class FRect
     int Y2{-1};
 
     // Friend operator functions
-    friend FRect operator +  (const FRect&, const FSize&);
-    friend FRect operator -  (const FRect&, const FSize&);
+    friend const FRect operator + (const FRect&, const FSize&);
+    friend const FRect operator - (const FRect&, const FSize&);
     friend bool  operator == (const FRect&, const FRect&);
     friend bool  operator != (const FRect&, const FRect&);
     friend std::ostream& operator << (std::ostream&, const FRect&);
diff --git a/src/include/final/fscrollview.h b/src/include/final/fscrollview.h
index d022401a..12bffba8 100644
--- a/src/include/final/fscrollview.h
+++ b/src/include/final/fscrollview.h
@@ -115,8 +115,8 @@ class FScrollView : public FWidget
     void                setVerticalScrollBarMode (fc::scrollBarMode);
 
     // Inquiries
-    bool                hasBorder();
-    bool                isViewportPrint();
+    bool                hasBorder() const;
+    bool                isViewportPrint() const;
 
     // Methods
     void                clearArea (int = ' ') override;
@@ -156,7 +156,7 @@ class FScrollView : public FWidget
     static constexpr int horizontal_border_spacing = 2;
 
     // Accessors
-    FPoint              getViewportCursorPos();
+    const FPoint        getViewportCursorPos();
 
     // Methods
     void                init (const FWidget*);
@@ -182,7 +182,6 @@ class FScrollView : public FWidget
     FScrollbarPtr      hbar{nullptr};
     keyMap             key_map{};
     uInt8              nf_offset{0};
-    bool               border{true};
     bool               use_own_print_area{false};
     bool               update_scrollbar{true};
     fc::scrollBarMode  v_mode{fc::Auto};  // fc:Auto, fc::Hidden or fc::Scroll
@@ -247,11 +246,11 @@ inline bool FScrollView::unsetBorder()
 { return setBorder(false); }
 
 //----------------------------------------------------------------------
-inline bool FScrollView::hasBorder()
-{ return border; }
+inline bool FScrollView::hasBorder() const
+{ return ! getFlags().no_border; }
 
 //----------------------------------------------------------------------
-inline bool FScrollView::isViewportPrint()
+inline bool FScrollView::isViewportPrint() const
 { return ! use_own_print_area; }
 
 //----------------------------------------------------------------------
diff --git a/src/include/final/fsize.h b/src/include/final/fsize.h
index 21c30ae4..596435e1 100644
--- a/src/include/final/fsize.h
+++ b/src/include/final/fsize.h
@@ -102,8 +102,8 @@ class FSize
     friend bool operator != (const FSize&, const FSize&);
     friend bool operator >= (const FSize&, const FSize&);
     friend bool operator >  (const FSize&, const FSize&);
-    friend FSize operator + (const FSize&, const FSize&);
-    friend FSize operator - (const FSize&, const FSize&);
+    friend const FSize operator + (const FSize&, const FSize&);
+    friend const FSize operator - (const FSize&, const FSize&);
 
     friend std::ostream& operator << (std::ostream&, const FSize&);
     friend std::istream& operator >> (std::istream&, FSize&);
@@ -179,20 +179,20 @@ inline bool operator > (const FSize& s1, const FSize& s2)
 { return s1.width > s2.width && s1.height > s2.height; }
 
 //----------------------------------------------------------------------
-inline FSize operator + (const FSize& s1, const FSize& s2)
+inline const FSize operator + (const FSize& s1, const FSize& s2)
 {
   constexpr std::size_t max = std::numeric_limits<std::size_t>::max();
   const std::size_t w = ( s1.width < max - s2.width) ? s1.width + s2.width : max;
   const std::size_t h = ( s1.height < max - s2.height) ? s1.height + s2.height : max;
-  return FSize(w, h);
+  return {w, h};
 }
 
 //----------------------------------------------------------------------
-inline FSize operator - (const FSize& s1, const FSize& s2)
+inline const FSize operator - (const FSize& s1, const FSize& s2)
 {
   const std::size_t w = ( s1.width >= s2.width ) ? s1.width - s2.width : 0;
   const std::size_t h = ( s1.height >= s2.height ) ? s1.height - s2.height : 0;
-  return FSize(w, h);
+  return {w, h};
 }
 
 }  // namespace finalcut
diff --git a/src/include/final/fspinbox.h b/src/include/final/fspinbox.h
index 42384843..ed6a4b4f 100644
--- a/src/include/final/fspinbox.h
+++ b/src/include/final/fspinbox.h
@@ -108,7 +108,7 @@ class FSpinBox : public FWidget
     void                setLabelOrientation (const FLineEdit::label_o);
 
     // Inquiries
-    bool                hasShadow();
+    bool                hasShadow() const;
 
     // Methods
     void                hide() override;
@@ -205,7 +205,7 @@ inline bool FSpinBox::unsetShadow()
 { return setShadow(false); }
 
 //----------------------------------------------------------------------
-inline bool FSpinBox::hasShadow()
+inline bool FSpinBox::hasShadow() const
 { return getFlags().shadow; }
 
 //----------------------------------------------------------------------
diff --git a/src/include/final/fstatusbar.h b/src/include/final/fstatusbar.h
index 90a93bec..2a86d383 100644
--- a/src/include/final/fstatusbar.h
+++ b/src/include/final/fstatusbar.h
@@ -208,7 +208,7 @@ class FStatusBar : public FWindow
 
     // Inquiries
     bool                isActivated (int) const;
-    bool                hasActivatedKey();
+    bool                hasActivatedKey() const;
 
     // Methods
     void                hide() override;
diff --git a/src/include/final/fstring.h b/src/include/final/fstring.h
index 68672f80..91c520ad 100644
--- a/src/include/final/fstring.h
+++ b/src/include/final/fstring.h
@@ -190,8 +190,8 @@ class FString
     char* c_str();
     const std::string toString() const;
 
-    FString toLower()  const;
-    FString toUpper()  const;
+    const FString toLower()  const;
+    const FString toUpper()  const;
 
     sInt16  toShort()  const;
     uInt16  toUShort() const;
@@ -202,13 +202,13 @@ class FString
     float   toFloat()  const;
     double  toDouble() const;
 
-    FString ltrim() const;
-    FString rtrim() const;
-    FString trim()  const;
+    const FString ltrim() const;
+    const FString rtrim() const;
+    const FString trim()  const;
 
-    FString left (std::size_t) const;
-    FString right (std::size_t) const;
-    FString mid (std::size_t, std::size_t) const;
+    const FString left (std::size_t) const;
+    const FString right (std::size_t) const;
+    const FString mid (std::size_t, std::size_t) const;
 
     FStringList split (const FString&);
     FString& setString (const FString&);
@@ -227,10 +227,10 @@ class FString
     const FString& insert (const FString&, int);
     const FString& insert (const FString&, std::size_t);
 
-    FString replace (const FString&, const FString&);
+    const FString replace (const FString&, const FString&);
 
-    FString replaceControlCodes() const;
-    FString expandTabs (int = 8) const;
+    const FString replaceControlCodes() const;
+    const FString expandTabs (int = 8) const;
     FString removeDel() const;
     FString removeBackspaces() const;
 
diff --git a/src/include/final/fsystem.h b/src/include/final/fsystem.h
index f1a494ef..483decb3 100644
--- a/src/include/final/fsystem.h
+++ b/src/include/final/fsystem.h
@@ -60,7 +60,7 @@ class FSystem
     // Methods
     virtual uChar inPortByte (uShort) = 0;
     virtual void  outPortByte (uChar, uShort) = 0;
-    virtual int   isTTY (int) = 0;
+    virtual int   isTTY (int) const = 0;
     virtual int   ioctl (int, uLong, ...) = 0;
     virtual int   open (const char*, int, ...) = 0;
     virtual int   close (int) = 0;
diff --git a/src/include/final/fsystemimpl.h b/src/include/final/fsystemimpl.h
index 6804e4b9..4fda025a 100644
--- a/src/include/final/fsystemimpl.h
+++ b/src/include/final/fsystemimpl.h
@@ -121,7 +121,7 @@ class FSystemImpl : public FSystem
     { }
 #endif
 
-    int isTTY (int fd) override
+    int isTTY (int fd) const override
     {
       return ::isatty(fd);
     }
diff --git a/src/include/final/fterm.h b/src/include/final/fterm.h
index 0ffc7cf3..7f3f2e8f 100644
--- a/src/include/final/fterm.h
+++ b/src/include/final/fterm.h
@@ -392,9 +392,9 @@ bool isReverseNewFontchar (wchar_t);
 bool hasFullWidthSupports();
 wchar_t cp437_to_unicode (uChar);
 uChar unicode_to_cp437 (wchar_t);
-FString getFullWidth (const FString&);
-FString getHalfWidth (const FString&);
-FString getColumnSubString (const FString&, std::size_t, std::size_t);
+const FString getFullWidth (const FString&);
+const FString getHalfWidth (const FString&);
+const FString getColumnSubString (const FString&, std::size_t, std::size_t);
 std::size_t getLengthFromColumnWidth (const FString&, std::size_t);
 std::size_t getColumnWidth (const FString&, std::size_t);
 std::size_t getColumnWidth (const FString&);
diff --git a/src/include/final/ftermlinux.h b/src/include/final/ftermlinux.h
index df22bd7d..c28cbb56 100644
--- a/src/include/final/ftermlinux.h
+++ b/src/include/final/ftermlinux.h
@@ -96,7 +96,7 @@ class FTermLinux final
     const FString        getClassName() const;
     fc::linuxConsoleCursorStyle getCursorStyle();
     char*                getCursorStyleString();
-    int                  getFramebufferBpp();
+    int                  getFramebufferBpp() const;
 
     // Mutators
     bool                 setCursorStyle (CursorStyle);
@@ -105,8 +105,8 @@ class FTermLinux final
 
     // Inquiries
     bool                 isLinuxConsole();
-    bool                 isVGAFontUsed();
-    bool                 isNewFontUsed();
+    bool                 isVGAFontUsed() const;
+    bool                 isNewFontUsed() const;
 
     // Methods
     void                 init();
@@ -209,15 +209,15 @@ inline const FString FTermLinux::getClassName() const
 
 //----------------------------------------------------------------------
 #if defined(__linux__)
-inline int FTermLinux::getFramebufferBpp()
+inline int FTermLinux::getFramebufferBpp() const
 { return framebuffer_bpp; }
 
 //----------------------------------------------------------------------
-inline bool FTermLinux::isVGAFontUsed()
+inline bool FTermLinux::isVGAFontUsed() const
 { return vga_font; }
 
 //----------------------------------------------------------------------
-inline bool FTermLinux::isNewFontUsed()
+inline bool FTermLinux::isNewFontUsed() const
 { return new_font; }
 #endif  // defined(__linux__)
 
diff --git a/src/include/final/ftermxterminal.h b/src/include/final/ftermxterminal.h
index 8328df8a..b7ed001e 100644
--- a/src/include/final/ftermxterminal.h
+++ b/src/include/final/ftermxterminal.h
@@ -81,19 +81,19 @@ class FTermXTerminal final
 
     // Accessors
     const FString         getClassName() const;
-    fc::xtermCursorStyle  getCursorStyle();
-    const FString         getFont();
-    const FString         getTitle();
-    const FString         getForeground();
-    const FString         getBackground();
-    const FString         getCursorColor();
-    const FString         getMouseForeground();
-    const FString         getMouseBackground();
-    const FString         getHighlightBackground();
+    fc::xtermCursorStyle  getCursorStyle() const;
+    const FString         getFont() const;
+    const FString         getTitle() const;
+    const FString         getForeground() const;
+    const FString         getBackground() const;
+    const FString         getCursorColor() const;
+    const FString         getMouseForeground() const;
+    const FString         getMouseBackground() const;
+    const FString         getHighlightBackground() const;
 
     // Inquiries
-    bool                  hasFont();
-    bool                  hasTitle();
+    bool                  hasFont() const;
+    bool                  hasTitle() const;
 
     // Methods
     void                  init();
@@ -171,47 +171,47 @@ inline void FTermXTerminal::redefineDefaultColors (bool enable)
 { xterm_default_colors = enable; }
 
 //----------------------------------------------------------------------
-inline fc::xtermCursorStyle FTermXTerminal::getCursorStyle()
+inline fc::xtermCursorStyle FTermXTerminal::getCursorStyle() const
 { return cursor_style; }
 
 //----------------------------------------------------------------------
-inline const FString FTermXTerminal::getFont()
+inline const FString FTermXTerminal::getFont() const
 { return xterm_font; }
 
 //----------------------------------------------------------------------
-inline const FString FTermXTerminal::getTitle()
+inline const FString FTermXTerminal::getTitle() const
 { return xterm_title; }
 
 //----------------------------------------------------------------------
-inline const FString FTermXTerminal::getForeground()
+inline const FString FTermXTerminal::getForeground() const
 { return foreground_color; }
 
 //----------------------------------------------------------------------
-inline const FString FTermXTerminal::getBackground()
+inline const FString FTermXTerminal::getBackground() const
 { return background_color; }
 
 //----------------------------------------------------------------------
-inline const FString FTermXTerminal::getCursorColor()
+inline const FString FTermXTerminal::getCursorColor() const
 { return cursor_color; }
 
 //----------------------------------------------------------------------
-inline const FString FTermXTerminal::getMouseForeground()
+inline const FString FTermXTerminal::getMouseForeground() const
 { return mouse_foreground_color; }
 
 //----------------------------------------------------------------------
-inline const FString FTermXTerminal::getMouseBackground()
+inline const FString FTermXTerminal::getMouseBackground() const
 { return mouse_background_color; }
 
 //----------------------------------------------------------------------
-inline const FString FTermXTerminal::getHighlightBackground()
+inline const FString FTermXTerminal::getHighlightBackground() const
 { return highlight_background_color; }
 
 //----------------------------------------------------------------------
-inline bool FTermXTerminal::hasFont()
+inline bool FTermXTerminal::hasFont() const
 { return bool(xterm_font.getLength() > 2); }
 
 //----------------------------------------------------------------------
-inline bool FTermXTerminal::hasTitle()
+inline bool FTermXTerminal::hasTitle() const
 { return bool(xterm_title.getLength() > 0); }
 
 //----------------------------------------------------------------------
diff --git a/src/include/final/ftogglebutton.h b/src/include/final/ftogglebutton.h
index cbf6038d..60f10601 100644
--- a/src/include/final/ftogglebutton.h
+++ b/src/include/final/ftogglebutton.h
@@ -102,7 +102,7 @@ class FToggleButton : public FWidget
     virtual void        setText (const FString&);
 
     // Inquiries
-    bool                isChecked();
+    bool                isChecked() const;
 
     // Method
     void                hide() override;
@@ -208,7 +208,7 @@ inline bool FToggleButton::unsetChecked()
 { return setChecked(false); }
 
 //----------------------------------------------------------------------
-inline bool FToggleButton::isChecked()
+inline bool FToggleButton::isChecked() const
 { return checked; }
 
 //----------------------------------------------------------------------
diff --git a/src/include/final/ftypes.h b/src/include/final/ftypes.h
index 8c73b1ae..395a8bd5 100644
--- a/src/include/final/ftypes.h
+++ b/src/include/final/ftypes.h
@@ -142,7 +142,7 @@ union attribute
   FCharAttribute bit;
   uInt8 byte[4];
 };
-  
+
 typedef struct
 {
   wchar_t ch;            // Character code
diff --git a/src/include/final/fvterm.h b/src/include/final/fvterm.h
index ed55fbf9..f888217f 100644
--- a/src/include/final/fvterm.h
+++ b/src/include/final/fvterm.h
@@ -146,8 +146,8 @@ class FVTerm
     static FColor         getTermBackgroundColor();
     FTermArea*&           getVWin();
     const FTermArea*      getVWin() const;
-    FPoint                getPrintCursor();
-    static FChar          getAttribute();
+    const FPoint          getPrintCursor();
+    static const FChar    getAttribute();
     static int            getMaxColor();
     static int            getTabstop();
     static fc::encoding   getEncoding();
@@ -419,15 +419,15 @@ class FVTerm
                                                , const FPoint& );
     void                  updateVTerm();
     static void           callPreprocessingHandler (const FTermArea*);
-    bool                  hasChildAreaChanges (FTermArea*);
+    bool                  hasChildAreaChanges (FTermArea*) const;
     void                  clearChildAreaChanges (const FTermArea*);
     static bool           isInsideArea (const FPoint&, const FTermArea*);
-    static FChar          generateCharacter (const FPoint&);
-    static FChar          getCharacter ( character_type
+    static const FChar    generateCharacter (const FPoint&);
+    static const FChar    getCharacter ( character_type
                                        , const FPoint&
                                        , FVTerm* );
-    static FChar          getCoveredCharacter (const FPoint&, FVTerm*);
-    static FChar          getOverlappedCharacter (const FPoint&, FVTerm*);
+    static const FChar    getCoveredCharacter (const FPoint&, FVTerm*);
+    static const FChar    getOverlappedCharacter (const FPoint&, FVTerm*);
     void                  init (bool);
     static void           init_characterLengths (const FOptiMove*);
     void                  finish();
@@ -452,8 +452,8 @@ class FVTerm
     void                  skipPaddingCharacter (uInt&, uInt, const FChar* const&);
     exit_state            eraseCharacters (uInt&, uInt, uInt, bool);
     exit_state            repeatCharacter (uInt&, uInt, uInt);
-    bool                  isFullWidthChar (const FChar* const&);
-    bool                  isFullWidthPaddingChar (const FChar* const&);
+    bool                  isFullWidthChar (const FChar* const&) const;
+    bool                  isFullWidthPaddingChar (const FChar* const&) const;
     static void           cursorWrap();
     bool                  printWrap (FTermArea*);
     void                  printPaddingCharacter (FTermArea*, const FChar&);
@@ -509,37 +509,36 @@ class FVTerm
 
 struct FVTerm::FTermArea  // define virtual terminal character properties
 {
-  public:
-    // Constructor
-    FTermArea() = default;
+  // Constructor
+  FTermArea() = default;
 
-    // Disable copy constructor
-    FTermArea (const FTermArea&) = delete;
+  // Disable copy constructor
+  FTermArea (const FTermArea&) = delete;
 
-    // Destructor
-    ~FTermArea() = default;
+  // Destructor
+  ~FTermArea() = default;
 
-    // Disable copy assignment operator (=)
-    FTermArea& operator = (const FTermArea&) = delete;
+  // Disable copy assignment operator (=)
+  FTermArea& operator = (const FTermArea&) = delete;
 
-    // Data members
-    int offset_left{0};        // Distance from left terminal side
-    int offset_top{0};         // Distance from top of the terminal
-    int width{-1};             // Window width
-    int height{-1};            // Window height
-    int right_shadow{0};       // Right window shadow
-    int bottom_shadow{0};      // Bottom window shadow
-    int cursor_x{0};           // X-position for the next write operation
-    int cursor_y{0};           // Y-position for the next write operation
-    int input_cursor_x{-1};    // X-position input cursor
-    int input_cursor_y{-1};    // Y-position input cursor
-    FWidget* widget{nullptr};  // Widget that owns this FTermArea
-    FPreprocessing preproc_list{};
-    FLineChanges* changes{nullptr};
-    FChar* data{nullptr};      // FChar data of the drawing area
-    bool input_cursor_visible{false};
-    bool has_changes{false};
-    bool visible{false};
+  // Data members
+  int offset_left{0};        // Distance from left terminal side
+  int offset_top{0};         // Distance from top of the terminal
+  int width{-1};             // Window width
+  int height{-1};            // Window height
+  int right_shadow{0};       // Right window shadow
+  int bottom_shadow{0};      // Bottom window shadow
+  int cursor_x{0};           // X-position for the next write operation
+  int cursor_y{0};           // Y-position for the next write operation
+  int input_cursor_x{-1};    // X-position input cursor
+  int input_cursor_y{-1};    // Y-position input cursor
+  FWidget* widget{nullptr};  // Widget that owns this FTermArea
+  FPreprocessing preproc_list{};
+  FLineChanges* changes{nullptr};
+  FChar* data{nullptr};      // FChar data of the drawing area
+  bool input_cursor_visible{false};
+  bool has_changes{false};
+  bool visible{false};
 };
 
 
@@ -675,7 +674,7 @@ inline const FVTerm::FTermArea* FVTerm::getVWin() const
 { return vwin; }
 
 //----------------------------------------------------------------------
-inline FChar FVTerm::getAttribute()
+inline const FChar FVTerm::getAttribute()
 { return next_attribute; }
 
 //----------------------------------------------------------------------
@@ -692,11 +691,17 @@ inline fc::encoding FVTerm::getEncoding()
 
 //----------------------------------------------------------------------
 inline std::string FVTerm::getEncodingString()
-{ return FTerm::getEncodingString(); }
+{
+  const std::string& enc_str = FTerm::getEncodingString(); // init enc_str
+  return enc_str;
+}
 
 //----------------------------------------------------------------------
 inline const FString FVTerm::getKeyName (FKey keynum)
-{ return FTerm::getKeyName(keynum); }
+{
+  const FString& name = FTerm::getKeyName(keynum);  // initialize name
+  return name;
+}
 
 //----------------------------------------------------------------------
 inline const char* FVTerm::getTermType()
diff --git a/src/include/final/fwidget.h b/src/include/final/fwidget.h
index 10945f6c..348ec09a 100644
--- a/src/include/final/fwidget.h
+++ b/src/include/final/fwidget.h
@@ -231,8 +231,8 @@ class FWidget : public FVTerm, public FObject
     std::size_t             getDesktopWidth();
     std::size_t             getDesktopHeight();
     const FWidgetFlags&     getFlags() const;
-    FPoint                  getCursorPos();
-    FPoint                  getPrintPos();
+    const FPoint            getCursorPos();
+    const FPoint            getPrintPos();
 
     // Mutators
     static void             setMainWidget (FWidget*);
@@ -306,7 +306,7 @@ class FWidget : public FVTerm, public FObject
     bool                    hasVisibleCursor() const;
     bool                    hasFocus() const;
     bool                    acceptFocus() const;  // is focusable
-    bool                    isPaddingIgnored();
+    bool                    isPaddingIgnored() const;
 
     // Methods
     FWidget*                childWidgetAt (const FPoint&);
@@ -334,7 +334,7 @@ class FWidget : public FVTerm, public FObject
     virtual void            hide();
     virtual bool            focusFirstChild();  // widget focusing
     virtual bool            focusLastChild();
-    FPoint                  termToWidgetPos (const FPoint&);
+    const FPoint            termToWidgetPos (const FPoint&);
     void                    print (const FPoint&) override;
     virtual void            move (const FPoint&);
     virtual void            drawBorder();
@@ -675,7 +675,10 @@ inline int FWidget::getY() const  // y-position relative to the widget
 
 //----------------------------------------------------------------------
 inline const FPoint FWidget::getPos() const  // position relative to the widget
-{ return adjust_wsize.getPos(); }
+{
+  const FPoint& pos = adjust_wsize.getPos();  // initialize pos
+  return pos;
+}
 
 //----------------------------------------------------------------------
 inline int FWidget::getTermX() const  // x-position on terminal
@@ -687,7 +690,7 @@ inline int FWidget::getTermY() const  // y-position on terminal
 
 //----------------------------------------------------------------------
 inline const FPoint FWidget::getTermPos() const  // position on terminal
-{ return FPoint(getTermX(), getTermY()); }
+{ return {getTermX(), getTermY()}; }
 
 //----------------------------------------------------------------------
 inline std::size_t FWidget::getWidth() const
@@ -699,7 +702,10 @@ inline std::size_t FWidget::getHeight() const
 
 //----------------------------------------------------------------------
 inline const FSize FWidget::getSize() const
-{ return adjust_wsize.getSize(); }
+{
+  const FSize& size = adjust_wsize.getSize();  // initialize size
+  return size;
+}
 
 //----------------------------------------------------------------------
 inline int FWidget::getTopPadding() const
@@ -727,7 +733,10 @@ inline std::size_t FWidget::getClientHeight() const
 
 //----------------------------------------------------------------------
 inline const FSize FWidget::getClientSize() const
-{ return wclient_offset.getSize(); }
+{
+  const FSize& size = wclient_offset.getSize();  // initialize size
+  return size;
+}
 
 //----------------------------------------------------------------------
 inline std::size_t FWidget::getMaxWidth() const
@@ -800,7 +809,7 @@ inline const FWidget::FWidgetFlags& FWidget::getFlags() const
 { return flags; }
 
 //----------------------------------------------------------------------
-inline FPoint FWidget::getCursorPos()
+inline const FPoint FWidget::getCursorPos()
 { return widget_cursor_position; }
 
 //----------------------------------------------------------------------
@@ -971,7 +980,7 @@ inline void FWidget::setFixedSize (const FSize& size)
 
 //----------------------------------------------------------------------
 inline void FWidget::unsetCursorPos()
-{ setCursorPos (FPoint(-1, -1)); }
+{ setCursorPos ({-1, -1}); }
 
 //----------------------------------------------------------------------
 inline void FWidget::unsetDoubleFlatLine (fc::sides side)
@@ -1026,7 +1035,7 @@ inline bool FWidget::acceptFocus() const  // is focusable
 { return flags.focusable; }
 
 //----------------------------------------------------------------------
-inline bool FWidget::isPaddingIgnored()
+inline bool FWidget::isPaddingIgnored() const
 { return ignore_padding; }
 
 //----------------------------------------------------------------------
@@ -1042,10 +1051,10 @@ inline void FWidget::delAccelerator()
 { delAccelerator(this); }
 
 //----------------------------------------------------------------------
-inline FPoint FWidget::termToWidgetPos (const FPoint& tPos)
+inline const FPoint FWidget::termToWidgetPos (const FPoint& tPos)
 {
-  return FPoint ( tPos.getX() + 1 - woffset.getX1() - adjust_wsize.getX()
-                , tPos.getY() + 1 - woffset.getY1() - adjust_wsize.getY() );
+  return { tPos.getX() + 1 - woffset.getX1() - adjust_wsize.getX()
+         , tPos.getY() + 1 - woffset.getY1() - adjust_wsize.getY() };
 }
 
 //----------------------------------------------------------------------
@@ -1057,7 +1066,7 @@ inline void FWidget::print (const FPoint& pos)
 //----------------------------------------------------------------------
 inline void FWidget::drawBorder()
 {
-  finalcut::drawBorder (this, FRect(FPoint(1, 1), getSize()));
+  finalcut::drawBorder (this, FRect(FPoint{1, 1}, getSize()));
 }
 
 //----------------------------------------------------------------------
diff --git a/test/fmouse-test.cpp b/test/fmouse-test.cpp
index 27f3775a..77aeb2f1 100644
--- a/test/fmouse-test.cpp
+++ b/test/fmouse-test.cpp
@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2018-2019 Markus Gans                                      *
+* Copyright 2018-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -59,7 +59,7 @@ class FMouse_protected : public finalcut::FMouse
       return finalcut::FMouse::getMaxHeight();
     }
 
-    finalcut::FPoint& getNewMousePosition()
+    const finalcut::FPoint& getNewMousePosition()
     {
       return finalcut::FMouse::getNewPos();
     }
diff --git a/test/ftermfreebsd-test.cpp b/test/ftermfreebsd-test.cpp
index 22e29f1e..3264306e 100644
--- a/test/ftermfreebsd-test.cpp
+++ b/test/ftermfreebsd-test.cpp
@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2019 Markus Gans                                           *
+* Copyright 2019-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -54,7 +54,7 @@ class FSystemTest : public finalcut::FSystem
     // Methods
     uChar            inPortByte (uShort) override;
     void             outPortByte (uChar, uShort) override;
-    int              isTTY (int) override;
+    int              isTTY (int) const override;
     int              ioctl (int, uLong, ...) override;
     int              open (const char*, int, ...) override;
     int              close (int) override;
@@ -392,7 +392,7 @@ void FSystemTest::outPortByte (uChar, uShort)
 }
 
 //----------------------------------------------------------------------
-int FSystemTest::isTTY (int fd)
+int FSystemTest::isTTY (int fd) const
 {
   std::cerr << "Call: isatty (fd=" << fd << ")\n";
   return 1;
diff --git a/test/ftermlinux-test.cpp b/test/ftermlinux-test.cpp
index a17c3e9d..7c55a74a 100644
--- a/test/ftermlinux-test.cpp
+++ b/test/ftermlinux-test.cpp
@@ -104,7 +104,7 @@ class FSystemTest : public finalcut::FSystem
     // Methods
     uChar            inPortByte (uShort) override;
     void             outPortByte (uChar, uShort) override;
-    int              isTTY (int) override;
+    int              isTTY (int) const override;
     int              ioctl (int, uLong, ...) override;
     int              open (const char*, int, ...) override;
     int              close (int) override;
@@ -1053,7 +1053,7 @@ void FSystemTest::outPortByte (uChar value, uShort port)
 }
 
 //----------------------------------------------------------------------
-int FSystemTest::isTTY (int fd)
+int FSystemTest::isTTY (int fd) const
 {
   std::cerr << "Call: isatty (fd=" << fd << ")\n";
   return 1;
diff --git a/test/ftermopenbsd-test.cpp b/test/ftermopenbsd-test.cpp
index 14c8739a..81dd762c 100644
--- a/test/ftermopenbsd-test.cpp
+++ b/test/ftermopenbsd-test.cpp
@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2019 Markus Gans                                           *
+* Copyright 2019-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -72,7 +72,7 @@ class FSystemTest : public finalcut::FSystem
     // Methods
     uChar            inPortByte (uShort) override;
     void             outPortByte (uChar, uShort) override;
-    int              isTTY (int) override;
+    int              isTTY (int) const override;
     int              ioctl (int, uLong, ...) override;
     int              open (const char*, int, ...) override;
     int              close (int) override;
@@ -123,7 +123,7 @@ void FSystemTest::outPortByte (uChar, uShort)
 }
 
 //----------------------------------------------------------------------
-int FSystemTest::isTTY (int fd)
+int FSystemTest::isTTY (int fd) const
 {
   std::cerr << "Call: isatty (fd=" << fd << ")\n";
   return 1;