The example: The UDFish: The back story:  I put together "Win 11 - My own border color" and looking at the logs I've found that I had a handle leak. The leak got fixed but I wanted ( out of OCD ? ) to have the script report on it's status. Ok, easy enough, I'll IPC the request. But I don't wanna have it in the main loop, constantly asking "are we there yet ?, are we there yet ?,  ..." . I could not find a copy'n'paste UDF, that did that I wanted to have, so I had to code it 🥲