Using of a custom QPaintEngine

[Jonas_]

I use this class as a pointer in MyChildWindow-class.
There is a virtual function

QPaintEngine* MyChildWindow::paintEngine() const
{
	return mPaintEngine; // MyPaintEngine* mPaintEngine=new MyPaintEngine();
}

QPaintEngine* MyChildWindow::paintEngine() const
{
	return mPaintEngine; // MyPaintEngine* mPaintEngine=new MyPaintEngine();
}

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When i debug, VC++ steps in my "drawPixmap" method.
But nothing happens......