Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!samsung!think.com!mintaka!bloom-beacon!eru!hagbard!sunic!mcsun!hp4nl!ruuinf!ruunsa!neviatar
From: neviatar@ruunsa.fys.ruu.nl (Hadass Eviatar)
Newsgroups: comp.os.os9
Subject: single character read
Summary: How do you read single keystrokes under OS9
Message-ID: <1728@ruunsa.fys.ruu.nl>
Date: 2 Nov 90 10:56:43 GMT
Organization: University of Utrecht, Dept. of Physics
Lines: 37

Hi netters,

Anyone out there who knows how to read a single keystroke
under OS9?

The manual tells me to do a
     read (1, &buffer, 1);
                       ^= # of chars
           ^= input channel

but when I call this function, it reads the first keystroke,
puts it in the buffer and waits...
It waits until the second key is struck, and then the function
returns the information on the first keystroke, and puts the
second keystroke in the buffer and waits...

Of course, I tried other buffer-lengths than 1 (even zero!),
but to no avail.

What I need is a procedure that waits for a key to be struck
(i.e. either an ASCII character or a function-key) and reports
this keystroke IMMEDIATELY (i.e. without waiting for the enter/return
key to be hit) to the calling program.

If anyone knows how, please let me know.
Thanks in advance.



====================================================================
Hadass Eviatar, Dept. of Molecular Biophysics, University of Utrecht
Physically:  Buys Ballot Laboratory, Princetonpl. 5, 3584 CC Utrecht
Electronically:                           neviatar@ruunsa.fys.ruu.nl
Acoustically:                                 030 - 531555/2839/2951

Always yield to temptation - Oscar Wilde.
====================================================================