protected unsafe void EnableActionStepUp()
{
iCallbackStepUp = new CallbackStepUp(DoStepUp);
IntPtr ptr = GCHandle.ToIntPtr(iGch);
DvServiceUpnpOrgDimming1EnableActionStepUp(iHandle, iCallbackStepUp, ptr);
}
static extern void DvServiceUpnpOrgDimming1EnableActionStepUp(uint aHandle, CallbackStepUp aCallback, IntPtr aPtr);