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

Chapter 1 - Introduction to QuickDraw 3D / QuickDraw 3D Reference

Constants

Gestalt Selectors and Response Values

You can pass the gestaltQD3D selector to the Gestalt function to determine information about the availability of QuickDraw 3D.

enum {
   gestaltQD3D                      = 'qd3d'
}

Gestalt returns information to you by returning a long word in the response parameter. Currently, the returned values are defined by constants:

enum {
   gestaltQD3DNotPresent            = 0,
   gestaltQD3DAvailable             = 1
}

Constant descriptions

gestaltQD3DNotPresent

QuickDraw 3D is not available.

gestaltQD3DAvailable

QuickDraw 3D is available.