https://forum.qt.io/topic/82085/qgraphicsview-mousereleaseevent-ensures-that-i-can-t-select-qgraphicsitems-anymore
QGraphicsView::mouseReleaseEvent ensures that I can't select QGraphicsItems anymore | Qt Forum
Aug 6, 2017 - Hey, In a nutshell: When I implement the mouseReleaseEvent in my QGraphicsView derived class, this happens: When I click on an item (QGraphicsItem that I add...
i can