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GLUNURBSCALLBACKDATAEXT()                            GLUNURBSCALLBACKDATAEXT()

NAME
       gluNurbsCallbackDataEXT - set a user data pointer

C SPECIFICATION
       void gluNurbsCallbackDataEXT( GLUnurbs* nurb,
                                     GLvoid* userData )

PARAMETERS
       nurb      Specifies the NURBS object (created with
                 gluNewNurbsRenderer).

       userData  Specifies a pointer to the user's data.

DESCRIPTION
       gluNurbsCallbackDataEXT is used to pass a pointer to the application's
       data to NURBS tessellator. A copy of this pointer will be passed by the
       tessellator in the NURBS callback functions (set by gluNurbsCallback).

SEE ALSO
       gluNurbsCallback

                                                     GLUNURBSCALLBACKDATAEXT()