protected unsafe void EnableActionGetPosition()
        {
            iCallbackGetPosition = new CallbackGetPosition(DoGetPosition);
            IntPtr ptr = GCHandle.ToIntPtr(iGch);

            DvServiceZappOrgTestLights1EnableActionGetPosition(iHandle, iCallbackGetPosition, ptr);
        }
 static extern void DvServiceZappOrgTestLights1EnableActionGetPosition(uint aHandle, CallbackGetPosition aCallback, IntPtr aPtr);