[PyQt] qgraphicsitem not cleared before paint(...) ?

[Mads]

Hi,

I'm trying to implement a selection marker so the user can see the
selected area in a QGraphicsView. The selection is drawed from a
mousePressEvent(..) until a mouseReleaseEvent(..). However the
QGraphicsItem isn't always cleared before the next selection? Is there
a flush() or something else I need to call?

I have attached the code. The following link points to an image
showing the selections not being cleared:
http://img263.imageshack.us/img263/6339/marker.png.

Thanks!

Best regards,
Mads
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