[Qt-interest] QGraphics View Updates

Sean Harmer sean.harmer at maps-technology.com
Thu Jul 2 09:23:07 CEST 2009


On Thursday 02 Jul 2009 00:42:58 Willy P wrote:
> Hey,
> Does the QGraphicsView frame work have some sort of "clever" updating.
>
> I'm making a custom progress bar and it's catching all the updates but
> not repainting until its finished.  Wondering if it delaying
> repainting when it rapidly gets told to repaint itself.  Is there a
> way I can force it to repaint before moving on?
Have you tried calling QGraphicsItem::update() to trigger a paint event? Does 
the part of your app that updates the progress bar actually allow control to 
return to the event loop so that events can be handled?

Sean




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