1. wxMenu changes: wxMenuBase appears, several new functions for dynamic menu

handling as well
2. new sample: menu
3. small corrections to wxFileHistory made possible by wxMenu changes
4. ugly fix for panel loaded from resources and TABbing
5. wxDataObject &c doc updates


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4288 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/menuitem.h

@@ -31,10 +31,15 @@ public:
 
     // implement base class virtuals
     virtual void SetText( const wxString& str );
+    virtual wxString GetLabel() const;
     virtual void Enable( bool enable = TRUE );
     virtual void Check( bool check = TRUE );
     virtual bool IsChecked() const;
 
+#if wxUSE_ACCEL
+    virtual wxAcceleratorEntry *GetAccel() const;
+#endif // wxUSE_ACCEL
+
     // implementation
     void SetMenuItem(GtkWidget *menuItem) { m_menuItem = menuItem; }
     GtkWidget *GetMenuItem() const { return m_menuItem; }