mwindow->gui->lock_window("ZWindowGUI::keypress_event");
result = mwindow->gui->mbuttons->transport->do_keypress(key);
mwindow->gui->unlock_window();
mwindow->gui->lock_window("ZWindowGUI::keypress_event");
result = mwindow->gui->mbuttons->transport->do_keypress(key);
mwindow->gui->unlock_window();