[MAC OSX] Mousetracking does not work in VideoWidget

[Markus]

Dear all,

I want to track the mouse in a video widget and have sub-classed VideoWidget:

VideoWidgetPatch::VideoWidgetPatch( QWidget * parent) : Phonon::VideoWidget(parent)
{
	setMouseTracking(true);
}
 
void VideoWidgetPatch::mouseMoveEvent(QMouseEvent * event)
{
	qDebug() << event->type() << hasMouseTracking();
	Phonon::VideoWidget::mouseMoveEvent(event);
}

VideoWidgetPatch::VideoWidgetPatch( QWidget * parent) : Phonon::VideoWidget(parent)
{
	setMouseTracking(true);
}

void VideoWidgetPatch::mouseMoveEvent(QMouseEvent * event)
{
	qDebug() << event->type() << hasMouseTracking();
	Phonon::VideoWidget::mouseMoveEvent(event);
}

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The problem is the mouseMoveEvent comes only when I press the mouse button.
Am I missing something?

Thanks Markus