Merge wxUIActionSimulator fixes from SOC2010_GUI_TEST branch.

Correct a lot of problems with the initial implementation, notably make the
API consistent across all platforms, e.g. all keyboard-related methods now
take just a wxKeyCode.

Add some useful higher-level helpers such as Text() and MouseDragDrop().

Improve documentation.

wxUIActionSimulator now works under MSW, GTK and OS X and is enabled by
default.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65385 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/doxygen/mainpages/samples.h

@@ -131,6 +131,7 @@ TODO: Organize them in a more human-readable way.
 @li @sample{toolbar}
 @li @sample{treectrl}
 @li @sample{typetest}
+@li @sample{uiaction}
 @li @sample{validate}
 @li @sample{vscroll}
 @li @sample{widgets}
@@ -989,6 +990,17 @@ demonstrated here as well - try the corresponding menu entries.
 
 @sampledir{typetest}
 
+@section page_samples_uiaction wxUIActionSimulator Sample
+
+@sampleabout{wxUIActionSimulator}
+
+This sample shows some features of wxUIActionSimulator class. When a simulation
+is ran using its menu items, you can see that the button is pressed
+programmatically and the characters generated by the program appear in the text
+control.
+
+@sampledir{uiaction}
+
 @section page_samples_validate Validator Sample
 
 @sampleabout{wxValidator}