The button number for a mouse event.
This property is intended for use with the
NSOtherMouseDragged events, but will return values for
NSRightMouse... events also. If this event is not a mouse event, the property is set to
Getting Mouse Event Information
Returns the time, in seconds, in which a second mouse click must occur in order to be considered a double click.
Reports the current mouse position in screen coordinates.
The number of mouse clicks associated with a mouse-down or mouse-up event.