1991-2006 Silicon Graphics, Inc.
gluQuadricCallback 3G
gluQuadricCallback define a callback for a quadrics object

## C Specification

void `gluQuadricCallback` GLUquadric* quad GLenum which _GLUfuncptr CallBackFunc

## Parameters

quad

  Specifies the quadrics object (created with gluNewQuadric).

which

  Specifies the callback being defined. The only valid value is `GLU_ERROR`.

CallBackFunc

  Specifies the function to be called.

## Description

`gluQuadricCallback` is used to define a new callback to be used by a quadrics object. If the specified callback is already defined, then it is replaced. If CallBackFunc is NULL, then any existing callback is erased.

The one legal callback is `GLU_ERROR`:

`GLU_ERROR`

  The function is called when an error is encountered. Its single argument is of type GLenum, and it indicates the specific error that occurred. Character strings describing these errors can be retrieved with the gluErrorString call.

## See Also

gluErrorString, gluNewQuadric

## Copyright

Copyright 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.