gluNurbsCallback function

Article
12/11/2020

The gluNurbsCallback function defines a callback for a Non-Uniform Rational B-Spline (NURBS) object.

Syntax

void WINAPI gluNurbsCallback(
   GLUnurbs *nobj,
   GLenum   which,
   void (CALLBACK *fn)()
);

Parameters

nobj: The NURBS object (created with gluNewNurbsRenderer).
which: The callback being defined. The only valid value is GLU_ERROR. The meaning of GLU_ERROR means that 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 gluErrorString.
fn: A pointer to the callback function.

Return value

This function does not return a value.

Remarks

Use gluNurbsCallback to define a callback to be used by a NURBS object. If the specified callback is already defined, it is replaced. If fn is NULL, then any existing callback is erased.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Header	Glu.h
Library	Glu32.lib
DLL	Glu32.dll