protected unsafe void EnableActionGetSearchCapabilities()
        {
            iCallbackGetSearchCapabilities = new CallbackGetSearchCapabilities(DoGetSearchCapabilities);
            IntPtr ptr = GCHandle.ToIntPtr(iGch);

            DvServiceUpnpOrgContentDirectory3EnableActionGetSearchCapabilities(iHandle, iCallbackGetSearchCapabilities, ptr);
        }
 static extern void DvServiceUpnpOrgContentDirectory3EnableActionGetSearchCapabilities(uint aHandle, CallbackGetSearchCapabilities aCallback, IntPtr aPtr);