[Qt-interest] Restoring default widget brush

[Denis Akhmetzyanov]

Hi,
You could save old brush before change:

  QPalette p(this->widget()->palette());
  QBrush oldBrush = p.brush(QPalette::Base);
  p.setBrush(QPalette::Base, pixmap);
  this->widget()->setPalette(p);
// do something
...
// restore brush
  p.setBrush(QPalette::Base, oldBrush);
  this->widget()->setPalette(p);


2010/4/8 Nikos Chantziaras <realnc at arcor.de>

> Suppose I change the brush of a widget like this:
>
>   QPalette p(this->widget()->palette());
>   p.setBrush(QPalette::Base, pixmap);
>   this->widget()->setPalette(p);
>
> (I *think* this is the correct way of using a pixmap to change the
> background of a widget to an image.)
>
> How do I restore the widget background back to its default?  The below
> segfaults:
>
>   QPalette p(this->widget()->palette());
>   p.setBrush(QPalette::Base, QBrush());
>   this->widget()->setPalette(p);  // <-- crashes
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>



-- 
Best regards,
Denis Akhmetzyanov
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