<HTML> <BODY> <PRE> <STRONG>NAME</STRONG> <STRONG>gluNurbsCallbackDataEXT</STRONG> - set a user data pointer <STRONG>C</STRONG> <STRONG>SPECIFICATION</STRONG> void <STRONG>gluNurbsCallbackDataEXT</STRONG>( GLUnurbs* <EM>nurb</EM>, GLvoid* <EM>userData</EM> ) <STRONG>PARAMETERS</STRONG> <EM>nurb</EM> Specifies the NURBS object (created with <STRONG>gluNewNurbsRenderer</STRONG>). <EM>userData</EM> Specifies a pointer to the user's data. <STRONG>DESCRIPTION</STRONG> <STRONG>gluNurbsCallbackDataEXT</STRONG> is used to pass a pointer to the application's data to NURBS tessellator. A copy of this pointer will be passed by the tessellator in the NURBS callback functions (set by <STRONG>gluNurbsCallback</STRONG>). <STRONG>SEE</STRONG> <STRONG>ALSO</STRONG> <STRONG>gluNurbsCallback</STRONG> </PRE> </BODY> </HTML>