Yes, I am using QGLWidget on QGraphicsView for hardware acceleration.
I am trying to create a map control with very high refresh rate something similar to TomTom device in a moving vehicle(i.e a fast moving map). But it supports interaction with items on the map.

So my confusion was that once I set the QGLWidget as viewport how is it going to change the behavior ... May be I didnt put my question properly in the beginning
As you are suggested that Collision detection is still done by QGraphicsView. I will go ahead and try it out.

Thanks for your help.
Regards,
Raj