child process always terminate when the main process exits normally or unexpectedly?

[Davider]

Thanks very much for your help.
 

So many things in QM are difficult/raw/limited/unclear/awkward/weird/antique, if compared with C# and LA. Why you are still using it.

I don't know why  ​​​​​​​
but QM is enough for my daily work and is still the main tool.
I still need some time to learn C#...