Graphics item movement and scene bounds

Hello everybody,
I'm quite new in QT programming, and I'm focusing on drawing and moving elements on a scene (i.e., instance of the QGraphicsScene class).
I used the method "setSceneRect(0, 0, 5000, 5000)" to set the size of the scene.
Every element in the scene (i.e. instance of a class that inherits from QGraphicsRectItem) is movable and selectable. The multiple selection is enabled. I would like to know how can I "limit" the movement of the objects in the scene, and so I would like to stop that movement if the object reach one of the bounds of the scene.
I hope I explained the problem well enough.
Thank you for any help

Gianluca Magnani

Just want to understand whether you are trying to call setSceneRect of Scene or QGraphicsView.

See the example in QGraphicsItem::itemChange() documentation.