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From: geoffs@gssc.UUCP
Newsgroups: comp.lang.c,comp.sys.ibm.pc
Subject: Re: Help with ^C in MS-DOS
Message-ID: <357@gssc.UUCP>
Date: Thu, 26-Mar-87 16:08:39 EST
Article-I.D.: gssc.357
Posted: Thu Mar 26 16:08:39 1987
Date-Received: Sat, 28-Mar-87 08:27:50 EST
References: <234@cup.portal.com>
Reply-To: geoffs@gssc.UUCP (Geoff Shapiro)
Distribution: world
Organization: Graphic Software Systems, Beaverton Or
Lines: 36
Xref: utgpu comp.lang.c:1347 comp.sys.ibm.pc:2576

In article <234@cup.portal.com> RichardKitts@cup.portal.com writes:
>
>   I am trying to prevent a ^C break in MS-DOS using MSC 4.0.
>If anyone could mail me some generic routines, pointers, or reference
>sources I would be grateful.
>   Thanx in advance.
>
>
>       sun!cup.portal.com!RichardKitts

The MSC 4.0 library contains a function named 'signal' which allows you
to trap ^C breaks at the keyboard. Its use is straightforward and looks
something like this:

	signal(SIGINT,KeyBreak);	/* SIGINT means trap Int23h */
					/* KeyBreak is a function -> to
					   a user-defined routine to handle
					   the ^C break
					 */

KeyBreak looks like this:

	int KeyBreak()
	{
	  /*
		body of code implementing what you would like to do in
		the ^C handler
	   */

	  signal(SIGINT,KeyBreak);	/* ensure ^C break next time also */
	}

Hope this helps you. Be sure to look in the MSC reference manual for more
complete descriptions.

Geoffs (Geoffrey Shapiro)