I have found a solution.
I post it for any one who needs it.

Class derived from QGraphicsItem:

Qt Code:
  1. void TArcEllipse::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,QWidget *widget){
  2.  
  3. painter->setPen(QPen(myBrush.color(), 0));
  4. painter->setBrush(myBrush);
  5. painter->setBackgroundMode(Qt::OpaqueMode);
  6. painter->drawPie(x, y, w,h, angle, degrees);
  7.  
  8. painter->setPen(myPen);
  9. painter->drawArc(x, y, w,h, angle, degrees);
  10. }
To copy to clipboard, switch view to plain text mode