<![CDATA[Repaint child without repainting parent widget]]>I have a parent widget ( QScrollArea ) to which I setWidget my custom QFrame containing some buttons. The QScrollArea has background set with stylesheet and my widget has transparent background. I want to make the QScrollArea not redraw its background each time my widget is moved because this slows down performance very much.

What can I do?

]]>https://forum.qt.io/topic/33139/repaint-child-without-repainting-parent-widgetRSS for NodeFri, 10 Apr 2026 09:10:05 GMTWed, 16 Oct 2013 12:52:27 GMT60<![CDATA[Reply to Repaint child without repainting parent widget on Thu, 17 Oct 2013 08:40:12 GMT]]>The Qt::WA_OpaquePaintEvent seems to be what I need but setting this to the scroll area still erase the background before the paintEvent is called.

]]>https://forum.qt.io/post/199370https://forum.qt.io/post/199370Thu, 17 Oct 2013 08:40:12 GMT