If I add my subclassed QGraphicsItem before I add anything else to the scene everything works fine. But if I add something else before then the paint method is never triggered in my new QGraphicsItem. Can somebody explain what I am missing?


Qt Code: 
  1. MyScene::MyScene(QObject *parent)
  2. : QGraphicsScene(parent), currentDrawItem(NULL), bDraw(false)
  3. {
  4.    void MyScene::toggleSymbols()
  5.    {
  6. 	if(bSymbols)
  7. 	{
  8. 		qDebug("false");
  9. 		bSymbols = false;
  10. 	}
  11. 	else
  12. 	{
  13. 		qDebug("true");
  14. 		bSymbols = true;
  15. 		symbols = new itemSymbols(); //Subclassed QGraphicsItem
  16. 		QPointF centerPos = QPointF(this->sceneRect().width()/2, this->sceneRect().height()/2);
  17. 		symbols->setCenterPos(centerPos);
  18. 		addItem(symbols);
  19. 	}
  20.    }
  21. }
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Qt Code: 
  1. itemSymbols::itemSymbols() : QGraphicsItem()
  2. {
  3.    void itemSymbols::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget    *widget)
  4.    {
  5.        Debug("itemSymbols paint()");
  6.    }
  7. }
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