#include
int main(int argc, char* argv[])
{
QApplication app(argc, argv);
QRect r(0,0, 100, 100);
QPixmap pm(r.size());
pm.fill();
QPainter p(&pm);
p.setRenderHint(QPainter::Antialiasing, true);
QPen pen(Qt::red, 2);
p.setPen(pen);
QBrush brush(Qt::blue);
p.setBrush(brush);
QRect ri = r.adjusted(10,10,-10,-10)
p.drawEllipse(ri);
QLabel l;
l.setPixmap(pm);
l.show();
return app.exec();
}