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//! [0]
void MyWidget::paintEvent(QPaintEvent *)
{
QRegion r1(QRect(100, 100, 200, 80), // r1: elliptic region
QRegion::Ellipse);
QRegion r2(QRect(100, 120, 90, 30)); // r2: rectangular region
QRegion r3 = r1.intersected(r2); // r3: intersection
QPainter painter(this);
painter.setClipRegion(r3);
... // paint clipped graphics
}
//! [0]
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