Can't Get Touch Inputs in QPixMap(image) in QView

I have a QScene object in QWidget and inside QWidget I have QGraphicsView. I convert images to QPixMap give it to QScene as an element and I defined touch events in QGraphicsView class. In QGraphicsView's creator method I enabled touch events with:

viewport()->setAttribute(Qt::WA_AcceptTouchEvents);

and I am managing touch event by overriding ViewPortEvent method:

bool DicomView::viewportEvent(QEvent *event)

{

    if(event->type() == QEvent::TouchBegin)

    {

        QTouchEvent *touchEvent = static_cast<QTouchEvent *>(event);

              .......

return QGraphicsView::viewportEvent(event);开发者_运维问答

}

PS: DicomView is type of QGraphicsView.

My problem is when I run the application I can get the touch inputs from the view but when get to QView can not get touch inputs from QPixMap. I tried putting the methods inside QScene instead of QGraphicsView but QScene does not have a ViewPortEvent method. What am I supposed to do?