protected unsafe void EnableActionSourceCount()
{
iCallbackSourceCount = new CallbackSourceCount(DoSourceCount);
IntPtr ptr = GCHandle.ToIntPtr(iGch);
DvServiceLinnCoUkProduct3EnableActionSourceCount(iHandle, iCallbackSourceCount, ptr);
}
static extern void DvServiceLinnCoUkProduct3EnableActionSourceCount(uint aHandle, CallbackSourceCount aCallback, IntPtr aPtr);