[Solved] Shift key click in qt?

Question

The error is pretty clear.

QMouseEvent *mouse; – you declare a pointer to the a QMouseEvent, but where is it instantiated? This is only a pointer which points to something.

If you want to handle mouse events you probably have to overload some kind of widget’s mouse event (mouseMoveEvent, mousePressEvent, etc.). Those will provide you a valid QMouseEvent input.

Accepted Answer

The error is pretty clear.

QMouseEvent *mouse; – you declare a pointer to the a QMouseEvent, but where is it instantiated? This is only a pointer which points to something.

If you want to handle mouse events you probably have to overload some kind of widget’s mouse event (mouseMoveEvent, mousePressEvent, etc.). Those will provide you a valid QMouseEvent input.