protected unsafe void EnableActionUpdateObject()
        {
            iCallbackUpdateObject = new CallbackUpdateObject(DoUpdateObject);
            IntPtr ptr = GCHandle.ToIntPtr(iGch);

            DvServiceUpnpOrgContentDirectory3EnableActionUpdateObject(iHandle, iCallbackUpdateObject, ptr);
        }
 static extern void DvServiceUpnpOrgContentDirectory3EnableActionUpdateObject(uint aHandle, CallbackUpdateObject aCallback, IntPtr aPtr);