file_menu->Append(DIALOGS_MODELESS, "Modeless &dialog\tCtrl-Z", "", TRUE);
file_menu->AppendSeparator();
file_menu->Append(wxID_EXIT, "E&xit\tAlt-X");
file_menu->Append(DIALOGS_MODELESS, "Modeless &dialog\tCtrl-Z", "", TRUE);
file_menu->AppendSeparator();
file_menu->Append(wxID_EXIT, "E&xit\tAlt-X");