QGraphicsView::mouseReleaseEvent ensures that I can't select QGraphicsItems anymore
In a nutshell: When I implement the mouseReleaseEvent in my QGraphicsView derived class, this happens:
When I click on an item (QGraphicsItem that I added to the scene), the mousePressEvent of this item gets triggered. But when I click on another item, the old item (this first item I clicked on) is triggered again and not the new one.
When I delete the mouseReleaseEvent function in the QGraphicsView derived class (so I do not override it anymore), everything works.
Why is this and how can I fix this?
Thanks for answers!
Never forget to call
QGraphicsView::mousePressEvent(event); / QGraphicsView::mouseReleaseEvent(event); / QGraphicsView::mouseMoveEvent(event); ...
at the end of every mouseEvent you overrode in your QGraphicsView derived class (in the mouseMoveEvent use QGraphicsView::mouseMoveEvent(event) and so on).
Otherwise really strange things can happen.
Also if you even did not use some of these in your QGraphicsItem derived class, call it in every event.