gluNurbsCallback -- define a callback for a NURBS object
void gluNurbsCallback(GLUnurbsObj *nobj,
void (*fn)() )
Specifies the NURBS object (created with
Specifies the callback being defined. The only valid value is
Specifies the function that the callback calls.
gluNurbsCallback is used to define a callback to be used by a NURBS
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:
The error function is called when an error is encountered. Its single
argument is of type GLenum, and it indicates the specific error that
occurred. There are 37 errors unique to NURBS named GLU_NURBS_ERROR1
through GLU_NURBS_ERROR37. Character strings describing these errors
can be retrieved with
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© 1995 Uwe Behrens All rights reserved