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I set a QGraphicsScene to a QGraphicsView. but i saw they both have mousePressEvent, mouseReleaseEveent, what is the difference? and i tried QGraphicsView, it seems not worked for mousePressEvent, but the mouseWheelEvent does work.
You can have a single Scene be rendered in 2 different Views. Having mouse events in both gives you greater control and flexibility.
And, apart from that, all QWidgets have handlers for those events.
