Path: utzoo!attcan!uunet!datapg!com50!questar!jeff
From: jeff@questar.QUESTAR.MN.ORG (Jeff Holmes)
Newsgroups: comp.unix.xenix
Subject: FIORDCHK
Message-ID: <4587@questar.QUESTAR.MN.ORG>
Date: 13 Jan 90 06:05:33 GMT
Reply-To: jeff@questar.UUCP (Jeff Holmes)
Organization: Questar Data Systems, Inc., St. Paul, MN
Lines: 41


	I was wondering if someone at SCO could field this (or
	anyone else for that matter).

	I'm trying to find a portable way to check for function
	key presses. I know about rdchk(), and I've had a lot
	of good suggestions from the net, but I'm trying to find
	the BEST way I can to do this.

	Which brings me to my question...

	I have Xenix 386 2.3.2 and while browsing through 
	/usr/include/term.h and /usr/include/sys/ioctl.h
	I found reference to FIONREAD and FIORDCHK.

	On a BSD system I would do...

		int n;
		ioctl(0, FIONREAD, &n);

	where n would contain the number of chars to get.

	In /usr/include/term.h there is a comment about modification
	history dated MAR 18,1988 and the comment...

	   ...added XENIX FIORDCHK as alternative to BSD FIONREAD...

	So i tried x = ioctl(0, FIORDCHK, &n) and noticed that "n"
	did NOT change but the return value from ioctl was 1 on
	a function key press and 0 for anything that returned a single
	character.

	Since the use of FIORDCHK is undocumented could someone
	enlighten me as to the proper use of FIORDCHK?

	Much thanks,
		Jeff
-- 
Jeff Holmes	                  DOMAIN: jeff@questar.mn.org 
Questar Data Systems                UUCP: amdahl!bungia!questar!jeff
St. Paul, MN 55121		    AT&T: +1 612 688 0089