diff --git a/ChangeLog b/ChangeLog
index 7bd5cbc3..e3b699e9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2017-09-17  Markus Gans  <guru.mail@muenster.de>
+	* FObject has received the iterator child access methods 
+	  begin() and end()
+
 2017-09-15  Markus Gans  <guru.mail@muenster.de>
 	* Fix byte access in data type char_data
 
diff --git a/src/fapplication.cpp b/src/fapplication.cpp
index fd2eee19..2828b318 100644
--- a/src/fapplication.cpp
+++ b/src/fapplication.cpp
@@ -1044,11 +1044,11 @@ bool FApplication::processAccelerator (const FWidget*& widget)
       && widget->accelerator_list
       && ! widget->accelerator_list->empty() )
   {
-    FWidget::Accelerators::const_iterator iter, end;
+    FWidget::Accelerators::const_iterator iter, last;
     iter = widget->accelerator_list->begin();
-    end = widget->accelerator_list->end();
+    last = widget->accelerator_list->end();
 
-    while ( iter != end )
+    while ( iter != last )
     {
       if ( quit_now || app_exit_loop )
         break;
@@ -1918,7 +1918,7 @@ void FApplication::processResizeEvent()
 //----------------------------------------------------------------------
 int FApplication::processTimerEvent()
 {
-  FObject::TimerList::iterator iter, end;
+  FObject::TimerList::iterator iter, last;
   timeval currentTime;
   int activated = 0;
 
@@ -1934,9 +1934,9 @@ int FApplication::processTimerEvent()
     return 0;
 
   iter = timer_list->begin();
-  end  = timer_list->end();
+  last  = timer_list->end();
 
-  while ( iter != end )
+  while ( iter != last )
   {
     if ( ! (*iter).id
         || ! (*iter).object
diff --git a/src/fbuttongroup.cpp b/src/fbuttongroup.cpp
index 2dce30d1..a9296e69 100644
--- a/src/fbuttongroup.cpp
+++ b/src/fbuttongroup.cpp
@@ -126,11 +126,11 @@ bool FButtonGroup::hasFocusedButton() const
   if ( buttonlist.empty() )
     return false;
 
-  constFObjectIterator iter, end;
+  constFObjectIterator iter, last;
   iter = buttonlist.begin();
-  end = buttonlist.end();
+  last = buttonlist.end();
 
-  while ( iter != end )
+  while ( iter != last )
   {
     FToggleButton* toggle_button = static_cast<FToggleButton*>(*iter);
 
@@ -149,11 +149,11 @@ bool FButtonGroup::hasCheckedButton() const
   if ( buttonlist.empty() )
     return false;
 
-  constFObjectIterator iter, end;
+  constFObjectIterator iter, last;
   iter = buttonlist.begin();
-  end = buttonlist.end();
+  last = buttonlist.end();
 
-  while ( iter != end )
+  while ( iter != last )
   {
     FToggleButton* toggle_button = static_cast<FToggleButton*>(*iter);
 
@@ -177,11 +177,11 @@ void FButtonGroup::hide()
 
   if ( ! buttonlist.empty() )
   {
-    constFObjectIterator iter, end;
+    constFObjectIterator iter, last;
     iter = buttonlist.begin();
-    end = buttonlist.end();
+    last = buttonlist.end();
 
-    while ( iter != end )
+    while ( iter != last )
     {
       FToggleButton* toggle_button = static_cast<FToggleButton*>(*iter);
       toggle_button->hide();
@@ -325,11 +325,11 @@ void FButtonGroup::onFocusIn (FFocusEvent* in_ev)
 {
   if ( hasCheckedButton() && ! buttonlist.empty() )
   {
-    constFObjectIterator iter, end;
+    constFObjectIterator iter, last;
     iter = buttonlist.begin();
-    end = buttonlist.end();
+    last = buttonlist.end();
 
-    while ( iter != end )
+    while ( iter != last )
     {
       FToggleButton* toggle_button = static_cast<FToggleButton*>(*iter);
 
@@ -389,7 +389,7 @@ void FButtonGroup::onFocusIn (FFocusEvent* in_ev)
 void FButtonGroup::cb_buttonToggled (FWidget* widget, data_ptr)
 {
   FToggleButton* button = static_cast<FToggleButton*>(widget);
-  constFObjectIterator iter, end;
+  constFObjectIterator iter, last;
 
   if ( ! button->isChecked() )
     return;
@@ -398,9 +398,9 @@ void FButtonGroup::cb_buttonToggled (FWidget* widget, data_ptr)
     return;
 
   iter = buttonlist.begin();
-  end = buttonlist.end();
+  last = buttonlist.end();
 
-  while ( iter != end )
+  while ( iter != last )
   {
     FToggleButton* toggle_button = static_cast<FToggleButton*>(*iter);
 
@@ -600,11 +600,11 @@ void FButtonGroup::directFocus()
 
     if ( hasCheckedButton() && ! buttonlist.empty() )
     {
-      constFObjectIterator iter, end;
+      constFObjectIterator iter, last;
       iter = buttonlist.begin();
-      end = buttonlist.end();
+      last = buttonlist.end();
 
-      while ( iter != end )
+      while ( iter != last )
       {
         FToggleButton* toggle_button = static_cast<FToggleButton*>(*iter);
 
diff --git a/src/fdialog.cpp b/src/fdialog.cpp
index 9117dcac..ea6b028e 100644
--- a/src/fdialog.cpp
+++ b/src/fdialog.cpp
@@ -249,11 +249,11 @@ void FDialog::setPos (int x, int y, bool)
   if ( window_list && ! window_list->empty() )
   {
     bool overlaid = false;
-    widgetList::const_iterator iter, end;
+    widgetList::const_iterator iter, last;
     iter = window_list->begin();
-    end  = window_list->end();
+    last = window_list->end();
 
-    while ( iter != end )
+    while ( iter != last )
     {
       if ( overlaid )
         putArea ((*iter)->getTermPos(), (*iter)->getVWin());
@@ -335,11 +335,11 @@ void FDialog::setSize (int w, int h, bool adjust)
   if ( window_list && ! window_list->empty() )
   {
     bool overlaid = false;
-    widgetList::const_iterator iter, end;
+    widgetList::const_iterator iter, last;
     iter = window_list->begin();
-    end  = window_list->end();
+    last = window_list->end();
 
-    while ( iter != end )
+    while ( iter != last )
     {
       if ( overlaid )
         putArea ((*iter)->getTermPos(), (*iter)->getVWin());
@@ -949,11 +949,11 @@ void FDialog::onWindowRaised (FEvent*)
   // handle always-on-top windows
   if ( always_on_top_list && ! always_on_top_list->empty() )
   {
-    widgetList::const_iterator iter, end;
+    widgetList::const_iterator iter, last;
     iter = always_on_top_list->begin();
-    end  = always_on_top_list->end();
+    last  = always_on_top_list->end();
 
-    while ( iter != end )
+    while ( iter != last )
     {
       putArea ((*iter)->getTermPos(), (*iter)->getVWin());
       ++iter;
@@ -964,7 +964,7 @@ void FDialog::onWindowRaised (FEvent*)
 //----------------------------------------------------------------------
 void FDialog::onWindowLowered (FEvent*)
 {
-  widgetList::const_iterator iter, end;
+  widgetList::const_iterator iter, last;
 
   if ( ! window_list )
     return;
@@ -973,9 +973,9 @@ void FDialog::onWindowLowered (FEvent*)
     return;
 
   iter = window_list->begin();
-  end  = window_list->end();
+  last  = window_list->end();
 
-  while ( iter != end )
+  while ( iter != last )
   {
     putArea ((*iter)->getTermPos(), (*iter)->getVWin());
     ++iter;
diff --git a/src/ffiledialog.cpp b/src/ffiledialog.cpp
index c54287c5..4aea0770 100644
--- a/src/ffiledialog.cpp
+++ b/src/ffiledialog.cpp
@@ -346,11 +346,11 @@ int FFileDialog::readDir()
 
   if ( ! dir_entries.empty() )
   {
-    std::vector<dir_entry>::const_iterator iter, end;
+    std::vector<dir_entry>::const_iterator iter, last;
     iter = dir_entries.begin();
-    end = dir_entries.end();
+    last = dir_entries.end();
 
-    while ( iter != end )
+    while ( iter != last )
     {
       if ( (*iter).type == DT_DIR )
         filebrowser->insert(FString((*iter).name), fc::SquareBrackets);
@@ -612,16 +612,16 @@ inline bool FFileDialog::pattern_match ( const char* const pattern
 //----------------------------------------------------------------------
 void FFileDialog::clear()
 {
-  std::vector<dir_entry>::const_iterator iter, end;
+  std::vector<dir_entry>::const_iterator iter, last;
 
   if ( dir_entries.empty() )
     return;
 
   // delete all directory entries;
   iter = dir_entries.begin();
-  end = dir_entries.end();
+  last = dir_entries.end();
 
-  while ( iter != end )
+  while ( iter != last )
   {
     std::free ((*iter).name);
     ++iter;
@@ -637,11 +637,11 @@ int FFileDialog::numOfDirs()
     return 0;
 
   int n = 0;
-  std::vector<dir_entry>::const_iterator iter, end;
+  std::vector<dir_entry>::const_iterator iter, last;
   iter = dir_entries.begin();
-  end = dir_entries.end();
+  last = dir_entries.end();
 
-  while ( iter != end )
+  while ( iter != last )
   {
     if ( (*iter).type == DT_DIR && std::strcmp((*iter).name, ".") != 0 )
       n++;
@@ -685,13 +685,13 @@ int FFileDialog::changeDir (const FString& dirname)
         else if ( ! dir_entries.empty() )
         {
           int i = 1;
-          std::vector<dir_entry>::const_iterator iter, end;
+          std::vector<dir_entry>::const_iterator iter, last;
           const char* const baseName = \
             basename(const_cast<char*>(lastdir.c_str()));
           iter = dir_entries.begin();
-          end = dir_entries.end();
+          last = dir_entries.end();
 
-          while ( iter != end )
+          while ( iter != last )
           {
             if ( std::strcmp((*iter).name, baseName) == 0 )
             {
@@ -777,12 +777,12 @@ void FFileDialog::cb_processActivate (FWidget*, data_ptr)
 
     if ( ! dir_entries.empty() )
     {
-      std::vector<dir_entry>::const_iterator iter, end;
+      std::vector<dir_entry>::const_iterator iter, last;
       const FString& input = filename->getText().trim();
       iter = dir_entries.begin();
-      end = dir_entries.end();
+      last = dir_entries.end();
 
-      while ( iter != end )
+      while ( iter != last )
       {
         if ( (*iter).name && input && ! input.isNull()
             && std::strcmp((*iter).name, input) == 0
diff --git a/src/flistbox.cpp b/src/flistbox.cpp
index 52756fef..76c2abdf 100644
--- a/src/flistbox.cpp
+++ b/src/flistbox.cpp
@@ -1372,7 +1372,7 @@ void FListBox::drawLabel()
 void FListBox::drawList()
 {
   FString element;
-  uInt start, end, inc_len;
+  uInt start, num, inc_len;
   bool isFocus;
   listBoxItems::iterator iter;
 
@@ -1381,11 +1381,11 @@ void FListBox::drawList()
 
   isFocus = ((flags & fc::focus) != 0);
   start   = 0;
-  end     = uInt(getHeight() - 2);
+  num     = uInt(getHeight() - 2);
   inc_len = inc_search.getLength();
 
-  if ( end > getCount() )
-    end = getCount();
+  if ( num > getCount() )
+    num = getCount();
 
   if ( last_yoffset >= 0
       && last_yoffset == yoffset
@@ -1395,12 +1395,12 @@ void FListBox::drawList()
     uInt last_pos = uInt(current - yoffset) - 1;
     uInt current_pos = uInt(last_current - yoffset) - 1;
     start = std::min(last_pos, current_pos);
-    end = std::max(last_pos, current_pos) + 1;
+    num = std::max(last_pos, current_pos) + 1;
   }
 
   iter = index2iterator(int(start) + yoffset);
 
-  for (uInt y = start; y < end; y++)
+  for (uInt y = start; y < num; y++)
   {
     bool serach_mark = false;
     bool lineHasBrackets = hasBrackets(iter);
diff --git a/src/flistview.cpp b/src/flistview.cpp
index 84175252..23dee12a 100644
--- a/src/flistview.cpp
+++ b/src/flistview.cpp
@@ -118,7 +118,7 @@ void FListViewItem::setText (int column, const FString& text)
 FObject::FObjectIterator FListViewItem::insert (FListViewItem* child)
 {
   // Add a FListViewItem as child element
-  if ( ! child || ! hasChildren() )
+  if ( ! child )
     return FObjectIterator(0);
 
   return appendItem(child);
@@ -174,8 +174,7 @@ FObject::FObjectIterator FListViewItem::appendItem (FListViewItem* child)
 {
   expandable = true;
   addChild (child);
-  FObjectList children = getChildren();
-  return --children.end();
+  return --FObject::end();
 }
 
 //----------------------------------------------------------------------
@@ -203,10 +202,9 @@ int FListViewItem::getVisibleLines()
     return visible_lines;
   }
 
-  FObjectList children = this->getChildren();
-  constFObjectIterator iter = children.begin();
+  constFObjectIterator iter = FObject::begin();
 
-  while ( iter != children.end() )
+  while ( iter != FObject::end() )
   {
     FListViewItem* child = static_cast<FListViewItem*>(*iter);
     visible_lines += child->getVisibleLines();
diff --git a/src/flistview.h b/src/flistview.h
index 9020ccc6..ee813f24 100644
--- a/src/flistview.h
+++ b/src/flistview.h
@@ -174,6 +174,8 @@ class FListView : public FWidget
     FObjectIterator    insert ( const std::vector<long>&
                               , data_ptr
                               , FObjectIterator );
+    FObjectIterator    beginOfList();
+    FObjectIterator    endOfList();
 
     // Event handlers
     void               onKeyPress (FKeyEvent*);
@@ -322,6 +324,14 @@ inline FObject::FObjectIterator
                     , FObjectIterator parent_iter )
 { return insert (cols, 0, parent_iter); }
 
+//----------------------------------------------------------------------
+inline FObject::FObjectIterator FListView::beginOfList()
+{ return itemlist.begin(); }
+
+//----------------------------------------------------------------------
+inline FObject::FObjectIterator FListView::endOfList()
+{ return itemlist.end(); }
+
 //----------------------------------------------------------------------
 inline FObject::FObjectIterator FListView::index2iterator (int index)
 {
@@ -333,7 +343,15 @@ inline FObject::FObjectIterator FListView::index2iterator (int index)
 //----------------------------------------------------------------------
 inline void FListView::nextElement (FObjectIterator& iter)
 {
-  ++iter;
+  FListViewItem* item = static_cast<FListViewItem*>(*iter);
+
+  if ( item->isExpandable() )
+  {
+    //iter = item->begin();
+    ++iter;
+  }
+  else
+    ++iter;
 }
 
 #endif  // FLISTVIEW_H
diff --git a/src/fmenu.cpp b/src/fmenu.cpp
index 11d8763b..c05ece59 100644
--- a/src/fmenu.cpp
+++ b/src/fmenu.cpp
@@ -293,17 +293,17 @@ void FMenu::onMouseDown (FMouseEvent* ev)
 
   if ( ! item_list.empty() )
   {
-    std::vector<FMenuItem*>::const_iterator iter, end;
+    std::vector<FMenuItem*>::const_iterator iter, last;
     FMenu* show_sub_menu = 0;
     bool focus_changed = false;
     FPoint mouse_pos;
 
     iter = item_list.begin();
-    end = item_list.end();
+    last = item_list.end();
     mouse_pos = ev->getPos();
     mouse_pos -= FPoint(getRightPadding(), getTopPadding());
 
-    while ( iter != end )
+    while ( iter != last )
     {
       int x1, x2, y, mouse_x, mouse_y;
       x1 = (*iter)->getX();
@@ -401,14 +401,14 @@ void FMenu::onMouseUp (FMouseEvent* ev)
 
     if ( ! item_list.empty() )
     {
-      std::vector<FMenuItem*>::const_iterator iter, end;
+      std::vector<FMenuItem*>::const_iterator iter, last;
       FPoint mouse_pos;
       iter = item_list.begin();
-      end = item_list.end();
+      last = item_list.end();
       mouse_pos = ev->getPos();
       mouse_pos -= FPoint(getRightPadding(), getTopPadding());
 
-      while ( iter != end )
+      while ( iter != last )
       {
         int x1, x2, y;
         x1 = (*iter)->getX();
@@ -480,7 +480,7 @@ void FMenu::onMouseMove (FMouseEvent* ev)
 
   if ( mouse_down && ! item_list.empty() )
   {
-    std::vector<FMenuItem*>::const_iterator iter, end;
+    std::vector<FMenuItem*>::const_iterator iter, last;
     FMenu* smenu = 0;
     bool focus_changed = false;
     bool mouse_over_menu = false;
@@ -492,7 +492,7 @@ void FMenu::onMouseMove (FMouseEvent* ev)
     FPoint mouse_pos;
 
     iter = item_list.begin();
-    end = item_list.end();
+    last = item_list.end();
     mouse_pos = ev->getPos();
     mouse_pos -= FPoint(getRightPadding(), getTopPadding());
 
@@ -521,7 +521,7 @@ void FMenu::onMouseMove (FMouseEvent* ev)
       mouse_over_menubar = true;
     }
 
-    while ( iter != end )
+    while ( iter != last )
     {
       int x1, x2, y, mouse_x, mouse_y;
       x1 = (*iter)->getX();
@@ -710,7 +710,7 @@ void FMenu::onMouseMove (FMouseEvent* ev)
 void FMenu::cb_menuitem_toggled (FWidget* widget, data_ptr)
 {
   FMenuItem* menuitem = static_cast<FMenuItem*>(widget);
-  std::vector<FMenuItem*>::const_iterator iter, end;
+  std::vector<FMenuItem*>::const_iterator iter, last;
 
   if ( ! has_checkable_items )
     return;
@@ -722,9 +722,9 @@ void FMenu::cb_menuitem_toggled (FWidget* widget, data_ptr)
     return;
 
   iter = item_list.begin();
-  end = item_list.end();
+  last = item_list.end();
 
-  while ( iter != end )
+  while ( iter != last )
   {
     if ( (*iter) != menuitem
         && (*iter)->isChecked()
@@ -819,13 +819,13 @@ void FMenu::init(FWidget* parent)
 void FMenu::calculateDimensions()
 {
   int item_X, item_Y, adjust_X;
-  std::vector<FMenuItem*>::const_iterator iter, end;
+  std::vector<FMenuItem*>::const_iterator iter, last;
   iter = item_list.begin();
-  end = item_list.end();
+  last = item_list.end();
   max_item_width = 10;  // minimum width
 
   // find the maximum item width
-  while ( iter != end )
+  while ( iter != last )
   {
     uInt item_width = (*iter)->getTextLength() + 2;
     int  accel_key  = (*iter)->accel_key;
@@ -860,7 +860,7 @@ void FMenu::calculateDimensions()
   item_X = 1;
   item_Y = 1;
 
-  while ( iter != end )
+  while ( iter != last )
   {
     (*iter)->setGeometry (item_X, item_Y, int(max_item_width), 1);
 
@@ -880,11 +880,11 @@ void FMenu::calculateDimensions()
 //----------------------------------------------------------------------
 void FMenu::adjustItems()
 {
-  std::vector<FMenuItem*>::const_iterator end, iter;
+  std::vector<FMenuItem*>::const_iterator last, iter;
   iter = item_list.begin();
-  end = item_list.end();
+  last = item_list.end();
 
-  while ( iter != end )
+  while ( iter != last )
   {
     if ( (*iter)->hasMenu() )
     {
@@ -1034,11 +1034,11 @@ FMenu* FMenu::superMenuAt (int x, int y)
 //----------------------------------------------------------------------
 bool FMenu::selectNextItem()
 {
-  std::vector<FMenuItem*>::const_iterator iter, end;
+  std::vector<FMenuItem*>::const_iterator iter, last;
   iter = item_list.begin();
-  end = item_list.end();
+  last = item_list.end();
 
-  while ( iter != end )
+  while ( iter != last )
   {
     if ( (*iter)->isSelected() )
     {
@@ -1084,9 +1084,9 @@ bool FMenu::selectNextItem()
 //----------------------------------------------------------------------
 bool FMenu::selectPrevItem()
 {
-  std::vector<FMenuItem*>::const_iterator iter, begin;
+  std::vector<FMenuItem*>::const_iterator iter, first;
   iter = item_list.end();
-  begin = item_list.begin();
+  first = item_list.begin();
 
   do
   {
@@ -1127,7 +1127,7 @@ bool FMenu::selectPrevItem()
       break;
     }
   }
-  while ( iter != begin );
+  while ( iter != first );
 
   return true;
 }
@@ -1144,11 +1144,11 @@ void FMenu::keypressMenuBar (FKeyEvent*& ev)
 //----------------------------------------------------------------------
 bool FMenu::hotkeyMenu (FKeyEvent*& ev)
 {
-  std::vector<FMenuItem*>::const_iterator iter, end;
+  std::vector<FMenuItem*>::const_iterator iter, last;
   iter = item_list.begin();
-  end = item_list.end();
+  last = item_list.end();
 
-  while ( iter != end )
+  while ( iter != last )
   {
     if ( (*iter)->hasHotkey() )
     {
@@ -1242,16 +1242,16 @@ void FMenu::draw()
 //----------------------------------------------------------------------
 void FMenu::drawItems()
 {
-  std::vector<FMenuItem*>::const_iterator iter, end;
+  std::vector<FMenuItem*>::const_iterator iter, last;
   int c = 0;
   int y = 0;
   iter = item_list.begin();
-  end = item_list.end();
+  last = item_list.end();
 
   if ( has_checkable_items )
     c = 1;
 
-  while ( iter != end )
+  while ( iter != last )
   {
     if ( (*iter)->isSeparator() )
     {
diff --git a/src/fmenubar.cpp b/src/fmenubar.cpp
index d0ed36ce..4a180129 100644
--- a/src/fmenubar.cpp
+++ b/src/fmenubar.cpp
@@ -169,16 +169,16 @@ void FMenuBar::onMouseDown (FMouseEvent* ev)
 
   if ( ! item_list.empty() )
   {
-    std::vector<FMenuItem*>::const_iterator iter, end;
+    std::vector<FMenuItem*>::const_iterator iter, last;
     int mouse_x, mouse_y;
     bool focus_changed = false;
 
     iter = item_list.begin();
-    end = item_list.end();
+    last = item_list.end();
     mouse_x = ev->getX();
     mouse_y = ev->getY();
 
-    while ( iter != end )
+    while ( iter != last )
     {
       int x1, x2;
       x1 = (*iter)->getX();
@@ -255,13 +255,13 @@ void FMenuBar::onMouseUp (FMouseEvent* ev)
     if ( ! item_list.empty() )
     {
       int mouse_x, mouse_y;
-      std::vector<FMenuItem*>::const_iterator iter, end;
+      std::vector<FMenuItem*>::const_iterator iter, last;
       iter = item_list.begin();
-      end = item_list.end();
+      last = item_list.end();
       mouse_x = ev->getX();
       mouse_y = ev->getY();
 
-      while ( iter != end )
+      while ( iter != last )
       {
         int x1, x2;
         x1 = (*iter)->getX();
@@ -338,19 +338,19 @@ void FMenuBar::onMouseMove (FMouseEvent* ev)
 
   if ( mouse_down && ! item_list.empty() )
   {
-    std::vector<FMenuItem*>::const_iterator iter, end;
+    std::vector<FMenuItem*>::const_iterator iter, last;
     int mouse_x, mouse_y;
     bool mouse_over_menubar = false;
     bool focus_changed = false;
     iter = item_list.begin();
-    end = item_list.end();
+    last = item_list.end();
     mouse_x = ev->getX();
     mouse_y = ev->getY();
 
     if ( getTermGeometry().contains(ev->getTermPos()) )
       mouse_over_menubar = true;
 
-    while ( iter != end )
+    while ( iter != last )
     {
       int x1, x2;
       x1 = (*iter)->getX();
@@ -506,12 +506,12 @@ void FMenuBar::calculateDimensions()
 {
   int item_X = 1;
   int item_Y = 1;
-  std::vector<FMenuItem*>::const_iterator end, iter;
+  std::vector<FMenuItem*>::const_iterator last, iter;
   iter = item_list.begin();
-  end = item_list.end();
+  last = item_list.end();
 
   // find the maximum item width
-  while ( iter != end )
+  while ( iter != last )
   {
     uInt len = (*iter)->getTextLength();
     int item_width = int(len + 2);
@@ -532,11 +532,11 @@ void FMenuBar::calculateDimensions()
 //----------------------------------------------------------------------
 bool FMenuBar::selectNextItem()
 {
-  std::vector<FMenuItem*>::const_iterator iter, end;
+  std::vector<FMenuItem*>::const_iterator iter, last;
   iter = item_list.begin();
-  end = item_list.end();
+  last = item_list.end();
 
-  while ( iter != end )
+  while ( iter != last )
   {
     if ( (*iter)->isSelected() )
     {
@@ -597,9 +597,9 @@ bool FMenuBar::selectNextItem()
 //----------------------------------------------------------------------
 bool FMenuBar::selectPrevItem()
 {
-  std::vector<FMenuItem*>::const_iterator iter, begin;
+  std::vector<FMenuItem*>::const_iterator iter, first;
   iter = item_list.end();
-  begin = item_list.begin();
+  first = item_list.begin();
 
   do
   {
@@ -655,7 +655,7 @@ bool FMenuBar::selectPrevItem()
       break;
     }
   }
-  while ( iter != begin );
+  while ( iter != first );
 
   return true;
 }
@@ -663,11 +663,11 @@ bool FMenuBar::selectPrevItem()
 //----------------------------------------------------------------------
 bool FMenuBar::hotkeyMenu (FKeyEvent*& ev)
 {
-  std::vector<FMenuItem*>::const_iterator iter, end;
+  std::vector<FMenuItem*>::const_iterator iter, last;
   iter = item_list.begin();
-  end = item_list.end();
+  last = item_list.end();
 
-  while ( iter != end )
+  while ( iter != last )
   {
     if ( (*iter)->isEnabled() )
     {
@@ -756,7 +756,7 @@ void FMenuBar::draw()
 //----------------------------------------------------------------------
 void FMenuBar::drawItems()
 {
-  std::vector<FMenuItem*>::const_iterator iter, end;
+  std::vector<FMenuItem*>::const_iterator iter, last;
   int screenWidth;
   int x = 1;
   screenWidth = getColumnNumber();
@@ -770,9 +770,9 @@ void FMenuBar::drawItems()
     setReverse(true);
 
   iter = item_list.begin();
-  end = item_list.end();
+  last = item_list.end();
 
-  while ( iter != end )
+  while ( iter != last )
   {
     wchar_t* src;
     wchar_t* dest;
@@ -922,11 +922,11 @@ void FMenuBar::adjustItems()
 {
   int item_X = 1;
   int item_Y = 1;
-  std::vector<FMenuItem*>::const_iterator end, iter;
+  std::vector<FMenuItem*>::const_iterator last, iter;
   iter = item_list.begin();
-  end = item_list.end();
+  last = item_list.end();
 
-  while ( iter != end )
+  while ( iter != last )
   {
     // get item width
     int item_width = (*iter)->getWidth();
diff --git a/src/fmenuitem.cpp b/src/fmenuitem.cpp
index f72bb8b9..65409e72 100644
--- a/src/fmenuitem.cpp
+++ b/src/fmenuitem.cpp
@@ -728,7 +728,7 @@ void FMenuItem::init (FWidget* parent)
                                       , this );
       }
 
-      this->addCallback
+      addCallback  // for this element
       (
         "deactivate",
         F_METHOD_CALLBACK (parent, &FMenuBar::cb_item_deactivated)
@@ -789,8 +789,8 @@ void FMenuItem::createDialogList (FMenu* winmenu)
 
   if ( dialog_list && ! dialog_list->empty() )
   {
-    widgetList::const_iterator iter, begin;
-    iter = begin = dialog_list->begin();
+    widgetList::const_iterator iter, first;
+    iter = first = dialog_list->begin();
 
     while ( iter != dialog_list->end() && *iter )
     {
@@ -799,7 +799,7 @@ void FMenuItem::createDialogList (FMenu* winmenu)
       if ( win )
       {
         FMenuItem* win_item;
-        int n = int(std::distance(begin, iter));
+        int n = int(std::distance(first, iter));
         // get the dialog title
         const FString& name = win->getText();
 
diff --git a/src/fobject.cpp b/src/fobject.cpp
index 69b2987e..90d72740 100644
--- a/src/fobject.cpp
+++ b/src/fobject.cpp
@@ -79,14 +79,14 @@ FObject::~FObject()  // destructor
   }
 
   // delete children objects
-  FObjectList children = this->getChildren();
-
-  if ( ! children.empty() )
+  if ( hasChildren() )
   {
-    constFObjectIterator iter;
-    iter = children.begin();
+    constFObjectIterator iter, last;
+    FObjectList delete_list = children_list;
+    iter = delete_list.begin();
+    last = delete_list.end();
 
-    while ( iter != children.end() )
+    while ( iter != last )
     {
       delete (*iter);
       ++iter;
@@ -100,14 +100,14 @@ FObject* FObject::getChild (int index) const
 {
   index--;
 
-  if ( children_list.empty() )
+  if ( ! hasChildren() )
     return 0;
 
   if ( index < 0 || index >= numOfChildren() )
     return 0;
 
   constFObjectIterator iter;
-  iter = children_list.begin();
+  iter = begin();
   std::advance (iter, index);
   return *iter;
 }
@@ -146,7 +146,7 @@ void FObject::delChild (FObject* obj)
   if ( ! obj )
     return;
 
-  if ( ! children_list.empty() )
+  if ( hasChildren() )
   {
     obj->removeParent();
     children_list.remove(obj);
@@ -183,7 +183,7 @@ void FObject::getCurrentTime (timeval* time)
 //----------------------------------------------------------------------
 int FObject::addTimer (int interval)
 {
-  FObject::TimerList::iterator iter, end;
+  FObject::TimerList::iterator iter, last;
   timeval time_interval;
   timeval currentTime;
   int id = 1;
@@ -207,9 +207,9 @@ int FObject::addTimer (int interval)
   if ( ! timer_list->empty() )
   {
     iter = timer_list->begin();
-    end  = timer_list->end();
+    last = timer_list->end();
 
-    while ( iter != end )
+    while ( iter != last )
     {
       if ( (*iter).id == id )
       {
@@ -233,9 +233,9 @@ int FObject::addTimer (int interval)
 
   // insert in list sorted by timeout
   iter = timer_list->begin();
-  end  = timer_list->end();
+  last = timer_list->end();
 
-  while ( iter != end && (*iter).timeout < t.timeout )
+  while ( iter != last && (*iter).timeout < t.timeout )
     ++iter;
 
   timer_list->insert (iter, t);
@@ -247,19 +247,19 @@ int FObject::addTimer (int interval)
 //----------------------------------------------------------------------
 bool FObject::delTimer (int id)
 {
-  FObject::TimerList::iterator iter, end;
+  FObject::TimerList::iterator iter, last;
 
   if ( id <= 0 || id > int(timer_list->size()) )
     return false;
 
   timer_modify_lock = true;
   iter = timer_list->begin();
-  end  = timer_list->end();
+  last = timer_list->end();
 
-  while ( iter != end && (*iter).id != id )
+  while ( iter != last && (*iter).id != id )
     ++iter;
 
-  if ( iter != end )
+  if ( iter != last )
   {
     timer_list->erase(iter);
     timer_modify_lock = false;
diff --git a/src/fobject.h b/src/fobject.h
index e84e3766..d632e44c 100644
--- a/src/fobject.h
+++ b/src/fobject.h
@@ -45,32 +45,36 @@ class FObject
     virtual ~FObject();
 
     // Accessors
-    virtual const char* getClassName() const;
-    FObject*            getParent() const;
-    FObject*            getChild (int) const;
-    const FObjectList&  getChildren() const;
-    int                 numOfChildren() const;
+    virtual const char*     getClassName() const;
+    FObject*                getParent() const;
+    FObject*                getChild (int) const;
+    const FObjectList&      getChildren() const;
+    int                     numOfChildren() const;
+    FObjectIterator         begin();
+    FObjectIterator         end();
+    constFObjectIterator    begin() const;
+    constFObjectIterator    end() const;
 
     // Inquiries
-    bool                hasParent() const;
-    bool                hasChildren() const;
-    bool                isChild (FObject*) const;
-    bool                isDirectChild (FObject*) const;
-    bool                isWidget() const;
-    bool                isInstanceOf (const char*) const;
-    bool                isTimerInUpdating() const;
+    bool                    hasParent() const;
+    bool                    hasChildren() const;
+    bool                    isChild (FObject*) const;
+    bool                    isDirectChild (FObject*) const;
+    bool                    isWidget() const;
+    bool                    isInstanceOf (const char*) const;
+    bool                    isTimerInUpdating() const;
 
     // Methods
-    void                removeParent();
-    void                addChild (FObject*);
-    void                delChild (FObject*);
+    void                    removeParent();
+    void                    addChild (FObject*);
+    void                    delChild (FObject*);
 
     // Timer methods
-    static void         getCurrentTime (timeval*);
-    int                 addTimer (int);
-    bool                delTimer (int);
-    bool                delOwnTimer();
-    bool                delAllTimer();
+    static void             getCurrentTime (timeval*);
+    int                     addTimer (int);
+    bool                    delTimer (int);
+    bool                    delOwnTimer();
+    bool                    delAllTimer();
 
   protected:
     struct timer_data
@@ -124,6 +128,22 @@ inline const FObject::FObjectList& FObject::getChildren() const
 inline int FObject::numOfChildren() const
 { return int(children_list.size()); }
 
+//----------------------------------------------------------------------
+inline FObject::FObjectIterator FObject::begin()
+{ return children_list.begin(); }
+
+//----------------------------------------------------------------------
+inline FObject::FObjectIterator FObject::end()
+{ return children_list.end(); }
+
+//----------------------------------------------------------------------
+inline FObject::constFObjectIterator FObject::begin() const
+{ return children_list.begin(); }
+
+//----------------------------------------------------------------------
+inline FObject::constFObjectIterator FObject::end() const
+{ return children_list.end(); }
+
 //----------------------------------------------------------------------
 inline bool FObject::hasParent() const
 { return has_parent; }
diff --git a/src/fradiomenuitem.cpp b/src/fradiomenuitem.cpp
index c74fe456..94843f9d 100644
--- a/src/fradiomenuitem.cpp
+++ b/src/fradiomenuitem.cpp
@@ -45,7 +45,7 @@ void FRadioMenuItem::init (FWidget* parent)
     if ( menu_ptr )
       menu_ptr->has_checkable_items = true;
 
-    this->addCallback
+    addCallback  // for this element
     (
       "toggled",
       F_METHOD_CALLBACK (parent, &FMenu::cb_menuitem_toggled)
diff --git a/src/fstatusbar.cpp b/src/fstatusbar.cpp
index 0d76b651..2119defd 100644
--- a/src/fstatusbar.cpp
+++ b/src/fstatusbar.cpp
@@ -154,11 +154,11 @@ bool FStatusBar::hasActivatedKey()
 {
   if ( ! key_list.empty() )
   {
-    std::vector<FStatusKey*>::const_iterator iter, end;
+    std::vector<FStatusKey*>::const_iterator iter, last;
     iter = key_list.begin();
-    end = key_list.end();
+    last = key_list.end();
 
-    while ( iter != end )
+    while ( iter != last )
     {
       if ( (*iter)->isActivated() )
         return true;
@@ -348,11 +348,11 @@ void FStatusBar::onMouseDown (FMouseEvent* ev)
 
     if ( ! key_list.empty() )
     {
-      std::vector<FStatusKey*>::const_iterator iter, end;
+      std::vector<FStatusKey*>::const_iterator iter, last;
       iter = key_list.begin();
-      end = key_list.end();
+      last = key_list.end();
 
-      while ( iter != end )
+      while ( iter != last )
       {
         (*iter)->unsetMouseFocus();
         ++iter;
@@ -370,12 +370,12 @@ void FStatusBar::onMouseDown (FMouseEvent* ev)
 
   if ( ! key_list.empty() )
   {
-    std::vector<FStatusKey*>::const_iterator iter, end;
+    std::vector<FStatusKey*>::const_iterator iter, last;
     int X = 1;
     iter = key_list.begin();
-    end = key_list.end();
+    last = key_list.end();
 
-    while ( iter != end )
+    while ( iter != last )
     {
       int x1, x2, mouse_x, mouse_y, kname_len, txt_length;
 
@@ -416,12 +416,12 @@ void FStatusBar::onMouseUp (FMouseEvent* ev)
 
     if ( ! key_list.empty() )
     {
-      std::vector<FStatusKey*>::const_iterator iter, end;
+      std::vector<FStatusKey*>::const_iterator iter, last;
       int X = 1;
       iter = key_list.begin();
-      end = key_list.end();
+      last = key_list.end();
 
-      while ( iter != end )
+      while ( iter != last )
       {
         int x1, x2, kname_len, txt_length;
         x1 = X;
@@ -462,13 +462,13 @@ void FStatusBar::onMouseMove (FMouseEvent* ev)
 
   if ( mouse_down && ! key_list.empty() )
   {
-    std::vector<FStatusKey*>::const_iterator iter, end;
+    std::vector<FStatusKey*>::const_iterator iter, last;
     bool focus_changed = false;
     int X = 1;
     iter = key_list.begin();
-    end = key_list.end();
+    last = key_list.end();
 
-    while ( iter != end )
+    while ( iter != last )
     {
       int x1, x2, mouse_x, mouse_y, kname_len, txt_length;
       x1 = X;
@@ -511,13 +511,13 @@ void FStatusBar::cb_statuskey_activated (FWidget* widget, data_ptr)
 {
   if ( ! key_list.empty() )
   {
-    std::vector<FStatusKey*>::const_iterator iter, end;
+    std::vector<FStatusKey*>::const_iterator iter, last;
     FStatusKey* statuskey = static_cast<FStatusKey*>(widget);
 
     iter = key_list.begin();
-    end = key_list.end();
+    last = key_list.end();
 
-    while ( iter != end )
+    while ( iter != last )
     {
       if ( (*iter) != statuskey && (*iter)->isActivated() )
         (*iter)->unsetActive();
@@ -562,7 +562,7 @@ void FStatusBar::draw()
 //----------------------------------------------------------------------
 void FStatusBar::drawKeys()
 {
-  std::vector<FStatusKey*>::const_iterator iter, end;
+  std::vector<FStatusKey*>::const_iterator iter, last;
   int screenWidth;
 
   screenWidth = getColumnNumber();
@@ -580,9 +580,9 @@ void FStatusBar::drawKeys()
     setReverse(true);
 
   iter = key_list.begin();
-  end = key_list.end();
+  last = key_list.end();
 
-  while ( iter != end )
+  while ( iter != last )
   {
     int kname_len = int(getKeyName((*iter)->getKey()).getLength());
 
diff --git a/src/ftextview.cpp b/src/ftextview.cpp
index 520393cb..f1cdd9db 100644
--- a/src/ftextview.cpp
+++ b/src/ftextview.cpp
@@ -185,7 +185,7 @@ void FTextView::insert (const FString& str, int pos)
   stringLines::iterator iter;
   stringLines text_split;
   FString s;
-  uLong end;
+  uLong num;
 
   if ( pos < 0 || pos >= int(getRows()) )
     pos = int(getRows());
@@ -197,9 +197,9 @@ void FTextView::insert (const FString& str, int pos)
 
   iter = data.begin();
   text_split = s.split("\r\n");
-  end = text_split.size();
+  num = text_split.size();
 
-  for (uInt i = 0; i < end; i++)
+  for (uInt i = 0; i < num; i++)
   {
     uInt len;
     text_split[i] = text_split[i].removeBackspaces()
@@ -239,24 +239,24 @@ void FTextView::insert (const FString& str, int pos)
 }
 
 //----------------------------------------------------------------------
-void FTextView::replaceRange (const FString& str, int start, int end)
+void FTextView::replaceRange (const FString& str, int from, int to)
 {
   stringLines::iterator iter;
 
-  if ( start > end )
+  if ( from > to )
     return;
 
-  if ( start < 0 || start >= int(getRows()) )
+  if ( from < 0 || from >= int(getRows()) )
     return;
 
-  if ( end < 0 || end >= int(getRows()) )
+  if ( to < 0 || to >= int(getRows()) )
     return;
 
   iter = data.begin();
-  data.erase (iter + start, iter + end + 1);
+  data.erase (iter + from, iter + to + 1);
 
   if ( ! str.isNull() )
-    insert(str, start);
+    insert(str, from);
 }
 
 //----------------------------------------------------------------------
@@ -740,23 +740,22 @@ void FTextView::draw()
 //----------------------------------------------------------------------
 void FTextView::drawText()
 {
-  uInt start, end;
+  uInt num;
 
   if ( data.empty() || getHeight() <= 2 || getWidth() <= 2 )
     return;
 
-  start = 0;
-  end = uInt(getHeight() + nf_offset - 2);
+  num = uInt(getHeight() + nf_offset - 2);
 
-  if ( end > getRows() )
-    end = getRows();
+  if ( num > getRows() )
+    num = getRows();
 
   setColor();
 
   if ( isMonochron() )
     setReverse(true);
 
-  for (uInt y = start; y < end; y++)
+  for (uInt y = 0; y < num; y++)
   {
     uInt i, len;
     FString line;
diff --git a/src/ftextview.h b/src/ftextview.h
index 5778074b..2511869d 100644
--- a/src/ftextview.h
+++ b/src/ftextview.h
@@ -140,8 +140,8 @@ inline const FTextView::stringLines& FTextView::getLines() const
 { return data; }
 
 //----------------------------------------------------------------------
-inline void FTextView::deleteRange (int start, int end)
-{ replaceRange (FString(), start, end); }
+inline void FTextView::deleteRange (int from, int to)
+{ replaceRange (FString(), from, to); }
 
 //----------------------------------------------------------------------
 inline void FTextView::deleteLine (int pos)
diff --git a/src/fvterm.cpp b/src/fvterm.cpp
index f964896a..f53b0373 100644
--- a/src/fvterm.cpp
+++ b/src/fvterm.cpp
@@ -277,7 +277,7 @@ void FVTerm::delPreprocessingHandler (FVTerm* instance)
   if ( ! print_area || print_area->preprocessing_call.empty() )
     return;
 
-  FPreprocessing::iterator iter, end;
+  FPreprocessing::iterator iter;
   iter = print_area->preprocessing_call.begin();
 
   while ( iter != print_area->preprocessing_call.end() )
@@ -820,7 +820,7 @@ bool FVTerm::isChildPrintArea() const
 
   if ( p_obj
       && p_obj->child_print_area
-      && p_obj->child_print_area == this->print_area )
+      && p_obj->child_print_area == print_area )
     return true;
   else
     return false;
diff --git a/src/fwidget.cpp b/src/fwidget.cpp
index 8017db74..f31e3823 100644
--- a/src/fwidget.cpp
+++ b/src/fwidget.cpp
@@ -121,7 +121,7 @@ FWidget::~FWidget()  // destructor
 
   // finish the program
   if ( rootObject == this )
-    this->finish();
+    finish();
 }
 
 
@@ -167,16 +167,16 @@ FWidget* FWidget::getFocusWidget() const
 }
 
 //----------------------------------------------------------------------
-FWidget* FWidget::getFirstFocusableWidget (FObjectList children)
+FWidget* FWidget::getFirstFocusableWidget (FObjectList list)
 {
-  if ( children.empty() )
+  if ( list.empty() )
     return 0;
 
-  constFObjectIterator iter, end;
-  iter = children.begin();
-  end = children.end();
+  constFObjectIterator iter, last;
+  iter = list.begin();
+  last = list.end();
 
-  while ( iter != end )
+  while ( iter != last )
   {
     if ( (*iter)->isWidget() )
     {
@@ -193,14 +193,14 @@ FWidget* FWidget::getFirstFocusableWidget (FObjectList children)
 }
 
 //----------------------------------------------------------------------
-FWidget* FWidget::getLastFocusableWidget (FObjectList children)
+FWidget* FWidget::getLastFocusableWidget (FObjectList list)
 {
-  if ( children.empty() )
+  if ( list.empty() )
     return 0;
 
-  constFObjectIterator iter, begin;
-  begin = children.begin();
-  iter = children.end();
+  constFObjectIterator iter, first;
+  first = list.begin();
+  iter = list.end();
 
   do
   {
@@ -214,7 +214,7 @@ FWidget* FWidget::getLastFocusableWidget (FObjectList children)
     if ( child->isEnabled() && child->acceptFocus() )
       return child;
   }
-  while ( iter != begin );
+  while ( iter != first );
 
   return 0;
 }
@@ -838,14 +838,11 @@ FWidget* FWidget::childWidgetAt (FWidget* p, int x, int y)
 {
   if ( p && p->hasChildren() )
   {
-    FObjectList children;
-    constFObjectIterator iter, end;
+    constFObjectIterator iter, last;
+    iter = p->begin();
+    last = p->end();
 
-    children = p->getChildren();
-    iter = children.begin();
-    end  = children.end();
-
-    while ( iter != end )
+    while ( iter != last )
     {
       if ( ! (*iter)->isWidget() )
       {
@@ -874,18 +871,16 @@ FWidget* FWidget::childWidgetAt (FWidget* p, int x, int y)
 //----------------------------------------------------------------------
 int FWidget::numOfFocusableChildren()
 {
-  FObjectList children;
-  constFObjectIterator iter, end;
+  constFObjectIterator iter, last;
 
-  if ( ! this->hasChildren() )
+  if ( ! hasChildren() )
     return 0;
 
   int num = 0;
-  children = this->getChildren();
-  iter = children.begin();
-  end  = children.end();
+  iter = FObject::begin();
+  last = FObject::end();
 
-  while ( iter != end )
+  while ( iter != last )
   {
     if ( (*iter)->isWidget() )
     {
@@ -1022,11 +1017,11 @@ void FWidget::emitCallback (const FString& emit_signal)
   // function pointer
   if ( ! callback_objects.empty() )
   {
-    CallbackObjects::const_iterator iter, end;
+    CallbackObjects::const_iterator iter, last;
     iter = callback_objects.begin();
-    end = callback_objects.end();
+    last = callback_objects.end();
 
-    while ( iter != end )
+    while ( iter != last )
     {
       if ( iter->cb_signal == emit_signal )
       {
@@ -1108,11 +1103,11 @@ void FWidget::redraw()
 
     if ( window_list && ! window_list->empty() )
     {
-      widgetList::const_iterator iter, end;
+      widgetList::const_iterator iter, last;
       iter = window_list->begin();
-      end  = window_list->end();
+      last  = window_list->end();
 
-      while ( iter != end )
+      while ( iter != last )
       {
         if ( (*iter)->isVisible() )
         {
@@ -1131,16 +1126,13 @@ void FWidget::redraw()
   else
   {
     // draw child elements
-    if ( this->hasChildren() )
+    if ( hasChildren() )
     {
-      FObjectList children;
-      constFObjectIterator iter, end;
+      constFObjectIterator iter, last;
+      iter = FObject::begin();
+      last = FObject::end();
 
-      children = this->getChildren();
-      iter = children.begin();
-      end  = children.end();
-
-      while ( iter != end )
+      while ( iter != last )
       {
         if ( (*iter)->isWidget() )
         {
@@ -1229,16 +1221,13 @@ void FWidget::show()
   draw();
   shown = true;
 
-  if ( this->hasChildren() )
+  if ( hasChildren() )
   {
-    FObjectList children;
-    constFObjectIterator iter, end;
+    constFObjectIterator iter, last;
+    iter = FObject::begin();
+    last = FObject::end();
 
-    children = this->getChildren();
-    iter = children.begin();
-    end  = children.end();
-
-    while ( iter != end )
+    while ( iter != last )
     {
       if ( (*iter)->isWidget() )
       {
@@ -1288,17 +1277,15 @@ void FWidget::hide()
 //----------------------------------------------------------------------
 bool FWidget::focusFirstChild()
 {
-  FObjectList children;
-  constFObjectIterator iter, end;
+  constFObjectIterator iter, last;
 
-  if ( ! this->hasChildren() )
+  if ( ! hasChildren() )
     return false;
 
-  children = this->getChildren();
-  iter = children.begin();
-  end  = children.end();
+  iter = FObject::begin();
+  last = FObject::end();
 
-  while ( iter != end )
+  while ( iter != last )
   {
     if ( ! (*iter)->isWidget() )
     {
@@ -1334,15 +1321,13 @@ bool FWidget::focusFirstChild()
 //----------------------------------------------------------------------
 bool FWidget::focusLastChild()
 {
-  FObjectList children;
-  constFObjectIterator iter, begin;
+  constFObjectIterator iter, first;
 
-  if ( ! this->hasChildren() )
+  if ( ! hasChildren() )
     return false;
 
-  children = this->getChildren();
-  iter  = children.end();
-  begin = children.begin();
+  iter  = FObject::end();
+  first = FObject::begin();
 
   do
   {
@@ -1368,7 +1353,7 @@ bool FWidget::focusLastChild()
       return true;
     }
   }
-  while ( iter != begin );
+  while ( iter != first );
 
   return false;
 }
@@ -1823,16 +1808,13 @@ void FWidget::adjustSize()
     getTermY() - 2 + getHeight() - padding.bottom
   );
 
-  if ( this->hasChildren() )
+  if ( hasChildren() )
   {
-    FObjectList children;
-    constFObjectIterator iter, end;
+    constFObjectIterator iter, last;
+    iter = FObject::begin();
+    last = FObject::end();
 
-    children = this->getChildren();
-    iter = children.begin();
-    end  = children.end();
-
-    while ( iter != end )
+    while ( iter != last )
     {
       if ( (*iter)->isWidget() )
       {
@@ -1857,11 +1839,11 @@ void FWidget::adjustSizeGlobal()
 
   if ( window_list && ! window_list->empty() )
   {
-    widgetList::const_iterator iter, end;
+    widgetList::const_iterator iter, last;
     iter = window_list->begin();
-    end  = window_list->end();
+    last = window_list->end();
 
-    while ( iter != end )
+    while ( iter != last )
     {
       (*iter)->adjustSize();
       ++iter;
@@ -1881,14 +1863,11 @@ bool FWidget::focusNextChild()
 
     if ( parent->hasChildren() && parent->numOfFocusableChildren() > 1 )
     {
-      FObjectList children;
-      FObjectIterator iter, end;
+      FObjectIterator iter, last;
+      iter = parent->begin();
+      last = parent->end();
 
-      children = parent->getChildren();
-      iter = children.begin();
-      end  = children.end();
-
-      while ( iter != end )
+      while ( iter != last )
       {
         if ( ! (*iter)->isWidget() )
         {
@@ -1908,8 +1887,8 @@ bool FWidget::focusNextChild()
           {
             ++next_element;
 
-            if ( next_element == children.end() )
-              next_element = children.begin();
+            if ( next_element == parent->end() )
+              next_element = parent->begin();
 
             if ( ! (*next_element)->isWidget() )
               continue;
@@ -1948,7 +1927,7 @@ bool FWidget::focusNextChild()
 
             if ( in.isAccepted() )
             {
-              this->redraw();
+              redraw();
               next->redraw();
               updateTerminal();
               flush_out();
@@ -1975,12 +1954,9 @@ bool FWidget::focusPrevChild()
 
     if ( parent->hasChildren() && parent->numOfFocusableChildren() > 1 )
     {
-      FObjectList children;
-      FObjectIterator iter, begin;
-
-      children = parent->getChildren();
-      iter  = children.end();
-      begin = children.begin();
+      FObjectIterator iter, first;
+      iter  = parent->end();
+      first = parent->begin();
 
       do
       {
@@ -2005,8 +1981,8 @@ bool FWidget::focusPrevChild()
               continue;
             }
 
-            if ( prev_element == children.begin() )
-              prev_element = children.end();
+            if ( prev_element == parent->begin() )
+              prev_element = parent->end();
 
             --prev_element;
             prev = static_cast<FWidget*>(*prev_element);
@@ -2043,7 +2019,7 @@ bool FWidget::focusPrevChild()
 
             if ( in.isAccepted() )
             {
-              this->redraw();
+              redraw();
               prev->redraw();
               updateTerminal();
               flush_out();
@@ -2053,7 +2029,7 @@ bool FWidget::focusPrevChild()
           break;
         }
       }
-      while ( iter != begin );
+      while ( iter != first );
     }
   }
 
diff --git a/test/treeview.cpp b/test/treeview.cpp
index 03ae2d84..a023f22f 100644
--- a/test/treeview.cpp
+++ b/test/treeview.cpp
@@ -80,9 +80,11 @@ Treeview::Treeview (FWidget* parent)
     listView->insert (line);
   }
 
+
+  FObjectIterator iter_africa = listView->beginOfList();
   std::string egypt[3] = { "Egypt", "94,666,000", "87" };
   std::vector<FString> egypt_line (&egypt[0], &egypt[0] + 3);
-  FObjectIterator iter_africa = listView->insert (egypt_line);
+  //FObjectIterator iter_africa = listView->insert (egypt_line);
   listView->insert (egypt_line, iter_africa);
 
 
diff --git a/test/ui.cpp b/test/ui.cpp
index 65ad0627..d3333212 100644
--- a/test/ui.cpp
+++ b/test/ui.cpp
@@ -53,7 +53,7 @@ ProgressDialog::ProgressDialog (FWidget* parent)
   , more()
   , quit()
 {
-  setGeometry (int((this->getParentWidget()->getWidth() - 40) / 2), 7, 40, 10);
+  setGeometry (int((getParentWidget()->getWidth() - 40) / 2), 7, 40, 10);
   setText("Progress bar");
   //setModal();
 
@@ -823,9 +823,9 @@ void MyDialog::cb_updateNumber (FWidget* widget, data_ptr data)
   FListBox* list = static_cast<FListBox*>(widget);
   FLabel* num = static_cast<FLabel*>(data);
   int select_num = 0;
-  uInt end = list->getCount();
+  uInt count = list->getCount();
 
-  for (uInt n = 1; n <= end; n++)
+  for (uInt n = 1; n <= count; n++)
     if ( list->isSelected(int(n)) )
       select_num++;
 
diff --git a/test/windows.cpp b/test/windows.cpp
index 45a61c89..d31755f1 100644
--- a/test/windows.cpp
+++ b/test/windows.cpp
@@ -356,7 +356,7 @@ void Window::activateWindow (FDialog* win)
 void Window::adjustSize()
 {
   int w, h, X, Y, dx, dy;
-  std::vector<win_data*>::const_iterator iter, begin;
+  std::vector<win_data*>::const_iterator iter, first;
   w  = getRootWidget()->getWidth();
   h  = getRootWidget()->getHeight();
   X  = int(1 + (w - 40) / 2);
@@ -368,14 +368,14 @@ void Window::adjustSize()
     Y = 2;
 
   setPos (X, Y);
-  iter = begin = windows.begin();
+  iter = first = windows.begin();
 
   while ( iter != windows.end() )
   {
     if ( (*iter)->is_open )
     {
       int x, y, n;
-      n = int(std::distance(begin, iter));
+      n = int(std::distance(first, iter));
       x = dx + 5 + (n % 3) * 25 + int(n / 3) * 3;
       y = dy + 11 + int(n / 3) * 3;
       (*iter)->dgl->setPos (x, y);
@@ -408,8 +408,8 @@ void Window::onClose (FCloseEvent* ev)
 void Window::cb_createWindows (FWidget*, data_ptr)
 {
   int w, h, dx, dy;
-  std::vector<win_data*>::const_iterator iter, begin;
-  iter = begin = windows.begin();
+  std::vector<win_data*>::const_iterator iter, first;
+  iter = first = windows.begin();
   w = getRootWidget()->getWidth();
   h = getRootWidget()->getHeight();
   dx = (w > 80) ? (w - 80) / 2 : 0;
@@ -425,7 +425,7 @@ void Window::cb_createWindows (FWidget*, data_ptr)
       win_dat->dgl = win;
       win_dat->is_open = true;
       win->setText(*(win_dat)->title);
-      n = int(std::distance(begin, iter));
+      n = int(std::distance(first, iter));
       x = dx + 5 + (n % 3) * 25 + int(n / 3) * 3;
       y = dy + 11 + int(n / 3) * 3;
       win->setGeometry (x, y, 20, 8);
@@ -453,9 +453,9 @@ void Window::cb_closeWindows (FWidget*, data_ptr)
   if ( ! dialog_list || dialog_list->empty() )
     return;
 
-  widgetList::const_iterator iter, begin;
+  widgetList::const_iterator iter, first;
   iter = dialog_list->end();
-  begin = dialog_list->begin();
+  first = dialog_list->begin();
   activateWindow(this);
 
   do
@@ -465,7 +465,7 @@ void Window::cb_closeWindows (FWidget*, data_ptr)
     if ( (*iter) != this )
       (*iter)->close();
   }
-  while ( iter != begin );
+  while ( iter != first );
 }
 
 //----------------------------------------------------------------------