+ // submenu
+ wxMenu *sub_menu = new wxMenu( wxEmptyString, wxMENU_TEAROFF );
+ sub_menu->Append(Minimal_About, "&About", "About this sample");
+ sub_menu->Append(Minimal_About, "&About", "About this sample");
+ sub_menu->Append(Minimal_About, "&About", "About this sample");
+