[Qt-interest] How to get update rect in paint event

[Schimkowitsch Robert]

When I update a GraphicsItem using
update(someRect);
how do I get "someRect" within my paint event, so I can optimize my
painting?

I suspect QStyleOptionGraphicsItem::exposedRect, but given it's name, it
might just as well only return the part of the GraphicsItem not covered
by other (opaque) items.

Couldn't find anything in the docs about that. 

Kind regards

Robert Schimkowitsch

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