Path: utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!clyde.concordia.ca!uunet!wuarchive!usc!ucsd!hub.ucsb.edu!6600m00n
From: 6600m00n@ucsbuxa.ucsb.edu (Steelworker)
Newsgroups: comp.os.msdos.programmer
Subject: Re: Ascii codes for 'Alt' keychords
Message-ID: <7850@hub.ucsb.edu>
Date: 15 Dec 90 20:35:17 GMT
References: <1990Dec14.221221.20958@cs.columbia.edu>
Sender: news@hub.ucsb.edu
Reply-To: 6600m00n@ucsbuxa.ucsb.edu
Followup-To: alt.msdos.programmer
Distribution: na
Organization: University of California -- Santa Barbara
Lines: 50
In-reply-to: olasov@cs.columbia.edu's message of 14 Dec 90 22:12:21 GMT

In article <1990Dec14.221221.20958@cs.columbia.edu> olasov@cs.columbia.edu (Benjamin Olasov) writes:

}   I can't find them anywhere (I know I'm probably looking in the wrong
}   places) - does anyone have them in emailable form?
}
}   (If you even have the code for 'Alt-F5' it would be great!)
}
}   Ben

The way keyboard input works in turbo c is this-
The function  getch() returns 0 on a special key hit.  ( ie function
keys, pageup, page down, etc) The next call to getch will return the 
"scan code" of the key hit.   You need to do some experimentation to
figure out what all the codes are, or find some list.   I wrote a
program that that prints out the scan code and ascii value of
keys pressed, among other things. 

/*****************************************************************/
/*  No copyright, whatsoever */

#include <bios.h>
#include <stdio.h>

main()
{
    int i=0;

    while((char)i != 27) {
        i=bioskey(0); /* get a key if is one waiting, else return 0 */
	/* High byte of i is the scan code, the low byte is the ascii*/
        if(i!=0)
             printf("%x %x\n",i,bioskey(2));  /* second  call is to get */
					      /* mod key states */
    }
}

/********************************************************************/


If you don't have turbo-c, then use some interrupt function to
call interrupt  16 hex  with 0 in _AX for bioskey(0),
16 hex, _AX = 2 for bioskey(2);
Return value for both is in AX, I believe.

( and for those of you with extended keyboards, you can add 0x10 to
the numbers and get extended codes as well!)

Good luck,
Robert Blair
6600m00n@ucsbuxa.ucsb.edu