Windows does not use UNIX signals.
This is a piece of Windows software that sends various kinds of close commands to windows programs. It can send specifics including WM_CLOSE and SC_CLOSE. I believe that TaskManager uses User32.dll->EndTask().
Check this out, it can kill anything:
Advanced Process TerminationIn reply to Re^2: writing to logfile in a loop
by brig
in thread writing to logfile in a loop
by jarthda
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