title: Propagate events to both QGraphicsView and QGraphicsScene
body: <p>I have a Qt app with a QGraphicsView and QGraphicsScene. I subclassed them both and want to handle mouseevents in both. I can do this for both classes separately, using     </p>
  
  <pre><code>     virtual void mousePressEvent(QMouseEvent* event);
  </code></pre>
  
  <p>But when I handle the events in the GraphicsView, I don't receive them anymore in the GraphicsScene. How do I fix this, i.e. pass the event from the grapchicsview to the graphicsscene?</p>