[PyQt] adding signalling to QGraphicsItems

[Christopher M. Nahler]

I want to add signalling functionality to scene items. In my case they 
are usually QGraphicsRectItems..

I thought I could do this with deriving from QGraphicsObject but then I 
loose all the funtionality for the rectangle, handling pens and brushes, 
shapes etc.

Isn't it easier to just derive from QGraphicsRectItem and QObject? Or 
should I derive from QGraphicsRectItem and QGraphicsObject instead?

Or are there any other ways to do this?

Thanks in advance
Chris