Other GLUT Device Functions

glutJoystickFunc(func, t) Called every t milliseconds with current joystick state
glutTabletMotionFunc(func) Called when the tablet puck is moved
glutTabletButtonFunc(func) Called when a tablet button is pressed or released
glutDialsFunc(func) Called when a dial is turned (dial/button box)
glutButtonBoxFunc(func) Called when a dial/button box button is pressed or released
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