how to check QGrapicsView/QGraphicsScene size

hello
I want to write something independent from device screen size. I want set position of icons on QGraphicsScene. I have to know the scene size in order to all icons set on the device screen (without scrollbar). Unfortunately I have no idea how to do it. Could you help me?

If anyone have the same problem, here is solution:

Code:

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QGraphicsScene scene;
 
    QGraphicsView view(&scene);
    view.show();
 
    QRectF geometry = view.contentsRect();

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