StartMenuBar
void StartMenuBar(int32 menuIndex,
menuBar->StartMenuBar(0, true, true, NULL);
((TStartableMenuBar*)KeyMenuBar())->StartMenuBar(index, true, true, NULL);
BRect* special_rect = NULL) { BMenuBar::StartMenuBar(menuIndex, sticky, showMenu,
StartMenuBar(-1, false, false);
fMenuBar->StartMenuBar(-1, false, true, &bounds);
fMenuBar->StartMenuBar(0, true, true, &bounds);
fKeyMenuBar->StartMenuBar(0, true, false, NULL);