On Fri, 25 Jan 2013 11:11:57 +0000, Mojmír Svoboda wrote: > but WA_PaintOutsidePaintEvent does not exist anymore What was useful for the X11 paint engine that doesn't exist in Qt5 anymore. As your code snippet seems to be copied from Qwt sources you can have a look at Qwt 6.1 to see how it is handled there. Uwe