maybe there is a way to follow the process tree or kill cmd.exe in such a way that all children will be also killed?

Yes. Use Win32::CreateProcess and the include CREATE_NEW_PROCESS_GROUP. Use it to start cmd.exe and then supply your complex command line.

When you kill cmd.exe, any child processes it has created will be killed also.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
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In reply to Re^3: break thread with system(...) call by BrowserUk
in thread break thread with system(...) call by aaaone

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