gluQuadricCallback(3G)	       OpenGL Reference		gluQuadricCallback(3G)



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



















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