Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!purdue!bu-cs!bloom-beacon!SAM.CS.CMU.EDU!Francois.Bitz
From: Francois.Bitz@SAM.CS.CMU.EDU
Newsgroups: comp.windows.x
Subject: getting CONTROL C  to interrupt X application
Message-ID: <8908231747.AA20273@ATHENA.MIT.EDU>
Date: 23 Aug 89 17:46:53 GMT
Organization: The Internet
Lines: 28

I am trying to find a way to be able to 'stop' an X program
by typing CONTROL C such as can be done with any other
'C' program.  Actually I want to use the SIGINT that is generated
by such an action to 'jump' somewhere in my program. This is
sometimes necessary when  displaying (or computing) lots of stuff that 
might takea long time and the user wants to stop (abort) it .

The problem I have is that when I type CONTROL C in the windows created by
my application (which uses SelectInput with KeyPressedMask)  no 
SIGINT is generated (although when I read the bufffer I can see that
there is a CONTROL C in it). If I typed CONTROL C in the xterm shell
where I started my application, then I can get a SIGINT; but this is
not a good solution since the startup shell is sometimes masked by the
application (or could be on another machine).

Alternatively is there a 'simple' way to write a small X program
with a button which when clicked could 'send' a 'signal' to 
my application.

Are there any signals which can be generated by the X server; or
between X clients ?

I hope my message is not too confusing; It might be related to a
question somebody asked about running 'X' processes in parallel without
having to fork (this being op. sys. dependant). 


Thanks