Emiting user programatically

[Kaci Tizi Ouzou]

Hi all,

I have a GUI wich launches another process (C code) and
I want to be able to stop/kill the process on a user request.
For this, I would like to emit a user(asynchronous) signal
that will be caught by a signal handler within my C
code. My problem is how can I emit such a signal from 
Python.

Thanks all.

Kaci