How to detect Painter closing from outside python app

[gdubost]

Hi there
i have an app launching Painter
I m trying to get notified by Painter when its closing
i dont see any closing Event that could trigger something in my code

Any idea how to do that ?

[Yifei Zhang 1]

Maybe it is the way
1. no spp.close(), so project.close()
2. create a class about if project close do what you need
3. udp > your app