+ virtual void SetRepresentedFilename(const wxString& WXUNUSED(filename)) { }
+
+#if wxUSE_MENUS || wxUSE_TOOLBAR
+ // show help text for the currently selected menu or toolbar item
+ // (typically in the status bar) or hide it and restore the status bar text
+ // originally shown before the menu was opened if show == false
+ virtual void DoGiveHelp(const wxString& WXUNUSED(text), bool WXUNUSED(show)) {}
+#endif
+