Hi,
It works perfectly for me. The Problem may be in your Scene's MouseMoveEvent. Please make sure QGraphicsScene::mouseMoveEvent(...) is called in your derrived Scene Class.

Qt Code:
  1. void QLMyItem::hoverLeaveEvent ( QGraphicsSceneHoverEvent * event )
  2. {
  3. if (scene()) {
  4. MyEvent e(QLMyItem::HoverLeave);
  5. e.object = (void*)this;
  6. QCoreApplication::sendEvent((QObject*)scene(), &e);
  7. }
  8. QGraphicsItem::hoverLeaveEvent(event);
  9. }
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