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Add a "signals and callbacks" chapter into the first steps document

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Markus Gans 2018-12-28 09:42:28 +01:00
parent 43f97a0d6a
commit bc389b730e
1 changed files with 44 additions and 0 deletions
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doc/first-steps.md
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@ -358,6 +358,48 @@ remove a connection to a signal handler or a widget. Alternatively, you can
use `delCallbacks()` to remove all existing callbacks from an object.
### The FINAL CUT widgets emit the following default signals ###
<dl>
<dt>FButton</dt>
<dd>"clicked"</dd>
<dt>FCheckMenuItem</dt>
<dd>"clicked"<br />"toggled"</dd>
<dt>FLineEdit</dt>
<dd>"activate"<br />"changed"</dd>
<dt>FListBox</dt>
<dd>"clicked"<br />"row-changed"<br />"row-selected"</dd>
<dt>FListView</dt>
<dd>"clicked"<br />"row-changed"</dd>
<dt>FMenu</dt>
<dd>"activate"</dd>
<dt>FMenuItem</dt>
<dd>"activate"<br />"clicked"<br />"deactivate"</dd>
<dt>FRadioMenuItem</dt>
<dd>"clicked"<br />"toggled"</dd>
<dt>FScrollbar</dt>
<dd>"change-value"</dd>
<dt>FStatusBar</dt>
<dd>"activate"</dd>
<dt>FTextView</dt>
<dd>"changed"</dd>
<dt>FToggleButton</dt>
<dd>"clicked"<br />"toggled"</dd>
</dl>
&nbsp;
### Example of a callback function: ###
**File:** *callback-function.cpp*
@ -466,6 +508,7 @@ g++ -O2 -std=c++11 -lfinal callback-method.cpp -o callback-method
```
&nbsp;
### Send custom signals ###
You can use the `emitCallback()` method to generate a user-defined signal.
@ -600,3 +643,4 @@ the above program with gcc:
```cpp
g++ -O2 -std=c++11 -lfinal emit-signal.cpp -o emit-signal
```
The FINAL CUT widgets emit the following default signals: