OpenGL man pages
gluQuadricCallback - define a callback for a quadrics object
void gluQuadricCallback( GLUquadricObj *qobj,
void (*fn)( )
qobj Specifies the quadrics object (created with gluNewQuadric).
which Specifies the callback being defined. The only valid value is
fn Specifies the function to be called.
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 fn 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.
Fri Dec 6 11:18:03 EST 1996
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