glunurbscallback
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gluNurbsCallback(3G) OpenGL Reference gluNurbsCallback(3G)
NAME
gluNurbsCallback - define a callback for a NURBS object
C SPECIFICATION
void gluNurbsCallback( GLUnurbs* nurb,
GLenum which,
GLvoid (*CallBackFunc)( )
PARAMETERS
nurb Specifies the NURBS object (created with
gluNewNurbsRenderer).
which Specifies the callback being defined. The only valid value
is GLU_ERROR.
CallBackFunc Specifies the function that the callback calls.
DESCRIPTION
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 CallBackFunc is NULL, then any existing callback is erased.
The one legal callback is GLU_ERROR:
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 gluErrorString.
SEE ALSO
gluErrorString, gluNewNurbsRenderer
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