Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!haven!purdue!decwrl!decvax!ima!mirror!frog!rmk
From: rmk@frog.UUCP (Rick Kelly)
Newsgroups: comp.sys.ibm.pc
Subject: Re: switchar character under MSDOS
Keywords: '/' '-' source code assembler
Message-ID: <1154@frog.UUCP>
Date: 23 Mar 89 02:53:00 GMT
References: <6202@bsu-cs.UUCP> <1150@frog.UUCP>
Reply-To: rmk@frog.UUCP (Rick Kelly)
Organization: Charles River Data Systems, Framingham MA
Lines: 43

In article <1150@frog.UUCP> rmk@frog.UUCP (Rick Kelly) writes:
>
>	There are two undocumented library routines in Turbo C for setting
>and inspecting the switch character.  I don't have the information close at
>hand but I will post it tomorrow.
>
>Rick Kelly
>Test Engineering
>Charles River Data Systems
>983 Concord St.
>Framingham, Mass. 01701

	It is now tomorrow and here are the undocumented routines:

	1. Examine switch character

	   getswitchar()  -  returns a char

	2. Set switch character

	   setswitch	ar(char c);

	Here is a scrap of code that compiles and runs under Turbo C 1.5.

main(argc, argv)
int argc;
char *argv[];
{
	if(argc == 1)	/* no args on command line */
		printf("switchar: %c\n", getswitchar());

	else
	{
		setswitchar((*++argv)[0]);	/* set the switch char */
		printf("switchar: %c\n", getswitchar()); /* check results */
	}
}

Rick Kelly
Test Engineering
Charles River Data Systems
983 Concord St.
Framingham, Mass 01701