installEventFilter(this);
bool MainWindow::eventFilter(QObject *, QEvent *event)
{
if (event->type() == QEvent::ShortcutOverride) {
QKeyEvent *kev = static_cast<QKeyEvent*>(event);
if ((kev->key() == Qt::Key_Alt || kev->key() == Qt::Key_Meta)
&& kev->modifiers() == Qt::AltModifier) {
return true;
}
}
return false;
}