Informs the gesture recognizer that the user moved the mouse with the left button pressed.
- macOS 10.10+
An object encapsulating information about the mouse-dragged event.
The default implementation of this method does nothing. Use this method to update the state of your gesture recognizer in whatever way is appropriate.
A gesture recognizer monitors events that occur in its view (and any subviews) but does not take part in the responder chain itself. The gesture recognizer receives events before any views do. Use the
delays property to control whether
event is propagated to the view.