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QGraphicEffects and non rectangular widgets on Qt 4.6 embedded

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andre.d

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Monday, April 30th 2012, 10:04am

QGraphicEffects and non rectangular widgets on Qt 4.6 embedded

Hi everyone,

I've got a problem with QGraphicEffects on Qt 4.6 embedded:
On widgets which do not have Qt::WA_NoSystemBackground set the effect is applied on the whole widget rectangle -- not only on the visible parts (i have rounded borders set with a stylesheet + opacity or shadow effects).

The problem is that if i set Qt::WA_NoSystemBackground on widgets which auto-resize, they loose their background (which is normal -- Qt doc: "[...]when the widget receives paint events, the background is not automatically repainted.).

So, my Question is: How do I apply effects on non rectangular widgets in Qt 4.6 embedded, so that the area they are applied to is the visible part of the widget?

Please tell me if I haven't described the problem well, then I'll post desktop vs. embedded screenshots and the code sample.

Thanks in advance

André

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Used tags

non rectangular widget, QGraphicEffect