chickadee » sdl2 » joy-ball-event-ball-set!

joy-ball-event-ball eventprocedure
set! (joy-ball-event-ball event) valsetter
joy-ball-event-ball-set! event valsetter

Get or set the event's "ball" field, as an integer indicating the trackball that the event is related to. E.g. 0 indicates the first trackball on the joystick.