Shortcuts for QToolButton are not displayed properly on Windows OS

When you press Alt key the shortcuts are displayed but after that are never hided.

I investigated my self, and it seems to be a problem in the QWindowsStyle::eventFilter method - the QWindowsStylePrivate seenAlt member is never cleared and is continuously growing on each Alt key press. I think it should be cleared on Alt key release.

bool QWindowsStyle::eventFilter(QObject *o, QEvent *e)
{
// Records Alt- and Focus events
if (!o->isWidgetType())
return QObject::eventFilter(o, e);

QWidget widget = qobject_cast<QWidget>(o);
Q_D(QWindowsStyle);
switch(e->type()) {
case QEvent::KeyPress:
if (static_cast<QKeyEvent *>(e)->key() == Qt::Key_Alt) {
widget = widget->window();

// Alt has been pressed - find all widgets that care
QList<QWidget *> l = qFindChildren<QWidget *>(widget);
for (int pos=0 ; pos < l.size() ; ++pos)

{ QWidget *w = l.at(pos); if (w->isWindow() || !w->isVisible() || w->style()->styleHint(SH_UnderlineShortcut, 0, w)) l.removeAt(pos); }

// Update states before repainting
d->seenAlt.append(widget);
d->alt_down = true;

// Repaint all relevant widgets
for (int pos = 0; pos < l.size(); ++pos)
l.at(pos)->update();
}
break;
case QEvent::KeyRelease:
if (static_cast<QKeyEvent*>(e)->key() == Qt::Key_Alt)

{ widget = widget->window(); // Update state and repaint the menu bars. d->alt_down = false; here maybe should clear the d->seenAlt list also... #ifndef QT_NO_MENUBAR QList<QMenuBar *> l = qFindChildren<QMenuBar *>(widget); for (int i = 0; i < l.size(); ++i) l.at(i)->update(); #endif }

break;