public static extern void gluNurbsCallback( IntPtr nobj, CallbackType which, GLU.ErrorDelegate callback);
public static extern void gluQuadricCallback( IntPtr qobj, CallbackType which, GLU.ErrorDelegate callback);
public static extern void gluNurbsCallback( IntPtr nobj, CallbackType which, GLU.ErrorDelegate callback);
public static extern void gluQuadricCallback( IntPtr qobj, CallbackType which, GLU.ErrorDelegate callback);