protected unsafe void EnableActionSetVolumeControlEnabled()
        {
            iCallbackSetVolumeControlEnabled = new CallbackSetVolumeControlEnabled(DoSetVolumeControlEnabled);
            IntPtr ptr = GCHandle.ToIntPtr(iGch);

            DvServiceLinnCoUkComponent1EnableActionSetVolumeControlEnabled(iHandle, iCallbackSetVolumeControlEnabled, ptr);
        }
 static extern void DvServiceLinnCoUkComponent1EnableActionSetVolumeControlEnabled(uint aHandle, CallbackSetVolumeControlEnabled aCallback, IntPtr aPtr);