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/combocmn.cpp

@@ -461,7 +461,7 @@ void wxComboPopupWindowEvtHandler::OnKeyEvent( wxKeyEvent& event )
     wxWindowList children = m_combo->GetPopupWindow()->GetChildren();
     wxWindowList::iterator node = children.begin();
     wxWindow* child = (wxWindow*)*node;
-    child->AddPendingEvent(event);
+    child->GetEventHandler()->AddPendingEvent(event);
 }
 
 #if USES_WXDIALOG
@@ -1177,7 +1177,7 @@ bool wxComboCtrlBase::Enable(bool enable)
         m_btn->Enable(enable);
     if ( m_text )
         m_text->Enable(enable);
-        
+
     Refresh();
 
     return true;
@@ -1648,7 +1648,7 @@ void wxComboCtrlBase::OnKeyEvent(wxKeyEvent& event)
     if ( IsPopupShown() )
     {
         // pass it to the popped up control
-        GetPopupControl()->GetControl()->AddPendingEvent(event);
+        GetPopupControl()->GetControl()->GetEventHandler()->AddPendingEvent(event);
     }
     else // no popup
     {