A coded bit field whose set bits indicate the type of pointing device (within a vendor selection) associated with the event.
See the vendor documentation for an interpretation of significant bits. This method is valid only for mouse events with subtype
NSTabletProximityEventSubtype and for
Getting Tablet Proximity Information
var capabilityMask: Int
A mask whose set bits indicate the capabilities of the tablet device that generated this event.
var deviceID: Int
A special identifier that is used to match tablet-pointer and tablet-proximity events.
var tabletID: Int
The USB model identifier of the tablet device associated with this event.