1. removed wxObject::CopyObject() and Clone() - some objects just can't be

copied
2. made wxEvent::Clone() pure virtual and added missing Clone()s to the
   other event classes which this changes has helped to discover


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@12566 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/event.cpp

@@ -638,7 +638,7 @@ void wxEvtHandler::AddPendingEvent(wxEvent& event)
     if ( !m_pendingEvents )
       m_pendingEvents = new wxList;
 
-    wxEvent *event2 = (wxEvent *)event.Clone();
+    wxEvent *event2 = event.Clone();
 
     m_pendingEvents->Append(event2);