I can't find my thread in the archives yet, but I made a similar inquiry a few days ago.
You can see a few examples for Windows here: https://github.com/AndrejMitrovic/DWinProgramming/tree/master/Samples/Extra/RedirectChildHandle https://github.com/AndrejMitrovic/DWinProgramming/tree/master/Samples/Extra/RedirectChildHandleThreaded
