How to enable dragging in QGraphicsScene?

问题

I'm trying to put two pictures in the QGraphicsScene. One is fixed and the other one is movable. But I succeed only in putting those pictures in the QGraphicsScene, I can't move them. How can I achieve this?

回答1:

You have to make sure the item is movable. Have a look at QGraphicsItem::setFlag.

You'll have to do something like this :

myImageItem->setFlag(QGraphicsItem::ItemIsMovable, true);

来源：https://stackoverflow.com/questions/3062465/how-to-enable-dragging-in-qgraphicsscene