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Asked: 2026-05-23T22:07:52+00:00

I am doing this in my paintEvent painter.drawPie(rect, angle*16, 45*16); But before drawing the

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I am doing this in my paintEvent 

painter.drawPie(rect, angle*16, 45*16);

But before drawing the pie I want to know whether the current mouse position lies under the pie region or not.

Mouse tracking is on. And I can get the mouseEvents. No problem from that side. But what is the math involved to know wheather the point lies inside the pie or not?

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1 Answer

  1. Editorial Team

    It’s unfortunate that QPainterPath doesn’t have an addPie() function. You can, however, use Qt’s implementation of QPainter::drawPie() as a reference:

    http://qt.gitorious.org/qt/qt/blobs/4.7/src/gui/painting/qpainter.cpp#line4439

    You can essentially create the QPainterPath the same way they do it and call contains() on it.

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