Change in wxWindow the access specifier of the wxEvtHandler event processing and queuing functions

from public to protected. Adapt wxWidgets code and wxWidgets samples to always use wxWindow::GetEventHandler()
when calling such functions on a wxWindow rather than directly using wxWindow::ProcessEvent, etc.
This enables correct event dispatching to the event handlers which have been pushed (with PushEventHandler) on the 
windows.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58381 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/choiccmn.cpp

@@ -49,7 +49,7 @@ wxChoiceBase::~wxChoiceBase()
 void wxChoiceBase::Command(wxCommandEvent& event)
 {
     SetSelection(event.GetInt());
-    (void)ProcessEvent(event);
+    (void)GetEventHandler()->ProcessEvent(event);
 }
 
 #endif // wxUSE_CHOICE