Path: utzoo!attcan!utgpu!watmath!att!ucbvax!decwrl!granite!basalt!pjs
From: pjs@basalt.dec.com (Philip Schneider)
Newsgroups: comp.windows.x
Subject: Re: getting CONTROL C  to interrupt X application
Message-ID: <525@granite.dec.com>
Date: 24 Aug 89 17:36:00 GMT
References: <8908231747.AA20273@ATHENA.MIT.EDU>
Sender: news@granite.dec.com
Reply-To: pjs@basalt.DEC.COM (Philip Schneider)
Organization: DEC Advanced Technology Development, Palo Alto, CA
Lines: 34

In article <8908231747.AA20273@ATHENA.MIT.EDU> Francois.Bitz@SAM.CS.CMU.EDU writes:
>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 .
>


  I'm not sure if this is what you wanted, but how about :

if (XPending(dpy)) {
            XNextEvent(dpy, &event);

            if (event.type == KeyPress) {
                XLookupString(&event, &keyPressed, 1, NULL, NULL);
                if (keyPressed == '^C') {
                   exit(0);
                }
            }

  I guess that instead of calling "exit(0)", what you would want here is
the call to whatever routine you execute before you die.

Hope this helps.

- Philip Schneider


Philip J. Schneider			| pjs@decwrl.dec.com
DEC Advanced Technology Development	| decwrl!pjs
100 Hamilton Avenue			| (415)853-6538
Palo Alto, CA  94301			| (415)386-8232