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

interface/wx/window.h

@@ -3086,6 +3086,25 @@ protected:
         explanations of when you might want to do it.
      */
     void SendDestroyEvent();
+
+    //@{
+    /**
+        This function is public in wxEvtHandler but is protected in wxWindow because
+        for wxWindows you should always use this function on the pointer returned
+        by GetEventHandler() and not on the wxWindow object itself.
+
+        Note that it's still possible to call these functions directly on the
+        wxWindow object (e.g. downcasting it to wxEvtHandler) but doing that
+        will create subtle bugs when windows with event handlers pushed on them
+        are involved.
+    */
+    virtual bool ProcessEvent(wxEvent& event);
+    bool SafelyProcessEvent(wxEvent& event);
+    virtual void QueueEvent(wxEvent *event);
+    virtual void AddPendingEvent(const wxEvent& event);
+    void ProcessPendingEvents();
+    bool ProcessThreadEvent(const wxEvent& event);
+    //@}
 };