Added menu_highlight behaviour as in wxMSW (statusbar)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1606 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk1/frame.h

@@ -102,6 +102,8 @@ public:
   void OnActivate( wxActivateEvent &WXUNUSED(event) ) { } // called from docview.cpp
   void OnSize( wxSizeEvent &event );
   void OnCloseWindow( wxCloseEvent& event );
+  
+  void OnMenuHighlight( wxMenuEvent& event );
 
   // implementation