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GLUQUADRICCALLBACK()                                      GLUQUADRICCALLBACK()

NAME
       gluQuadricCallback - define a callback for a quadrics object

C SPECIFICATION
       void gluQuadricCallback( GLUquadric* quad,
                                GLenum which,
                                GLvoid (*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

                                                          GLUQUADRICCALLBACK()