I'm a little puzzled by how the mouse works in the QGraphicsScene.
If I first click on an item in the view, and then click on a empty space where the item should be placed, how do Iwrite this in code?

It seems right now, that if no item is selected, nothing happens, the event is ignored. Is this true?
I'm a little confused with what to write in the

mousePressEvent(QGraphicsSceneMouseEvent*) function. for the class that is derived from the QGraphicsScene.