Inside Macintosh: 3D Graphics Programming With QuickDraw 3D /

Chapter 18 - QuickDraw 3D Pointing Device Manager / QuickDraw 3D Pointing Device Manager Reference

QuickDraw 3D Pointing Device Manager Routines / Creating and Managing Controllers

Q3Controller_HasTracker

You can use the Q3Controller_HasTracker function to determine whether a controller is currently associated with a tracker.

TQ3Status Q3Controller_HasTracker (
TQ3ControllerRef controllerRef, 
TQ3Boolean *hasTracker);

controllerRef

A reference to a controller.

hasTracker

On exit, a Boolean value that indicates whether the specified controller is currently associated with an active tracker (kQ3True) or not (kQ3False).

DESCRIPTION

The Q3Controller_HasTracker function returns, in the hasTracker parameter, a Boolean value that indicates whether the controller specified by the controllerRef parameter is active and is currently associated with an active tracker.

SPECIAL CONSIDERATIONS

In general, you need to use this function only if you are writing a device driver for a controller.

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