Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!sharkey!wyn386!wybbs!sleepy
From: sleepy@wybbs.mi.org (Mike Faber)
Newsgroups: comp.lang.c
Subject: Re: Re^2: How to test if a key has been hit w/o waiting for a key ?
Summary: Whoa!!
Message-ID: <172@wybbs.mi.org>
Date: 4 May 90 14:01:56 GMT
References: <3544@castle.ed.ac.uk> <182@demott.COM> <547@oglvee.UUCP>
Organization: Consultants Connection,  Jenison MI
Lines: 7


I missed parts of this, but couldn't you use ioctl?  
Set yourself up as nonicanonical processing, and in the array struct.c_cc,
set the VMIN element (struct.c_cc[VMIN]) to 0 and VTIME element to 1.  Then a
getchar() or getc()  will return -1 if no characters were received.
If you want to put it back, ungetc(or something like that) is supposed to
work...