[Solved] QWidget: Correct way to recognize mouseGrab loss?
In a MouseButtonPress event of a QWidget, I set an application-wide override cursor. I reset the cursor on the corresponding MouseButtonRelease.
However, if the widget loses mouse grab for reasons other than the button release (e.g. because a context menu was opened), I do not receive the MouseButtonRelease.
Which event notifies me that my widget has lost the mouse grab?
Solution: React on the LeaveEvent.