excluding an area from painting using clip path

[berliner]

Hi,

I'm in the process of porting an MFC/GDI+ application to QT. So far it was fairly smooth, but now I have a problem with clipping. I need to be able to exclude an area from painting.

In GDI this is done with the flag CombineModeExclude like this:

....paint dark rectagle....

...add hexagon points to "pointList"...

GraphicsPath path(FillModeAlternate);
path.AddPolygon(pointList, count);
graphics.SetClip(&path, CombineModeExclude);

...paint bright rectangle...


That creates something like this:


The hexagon is the path that is excluded from clipping. Qt doens't seem to provide something similar among it's flags in enum Qt::ClipOperation. I can include areas, but not exclude.

Does anyone have a workaround or an idea how to achieve this in Qt?