Path: utzoo!mnetor!tmsoft!masnet!canremote!edwin.milne
From: edwin.milne@canremote.uucp (EDWIN MILNE)
Newsgroups: comp.databases
Subject: Re: dBase/FoxBase question
Message-ID: <89080709105201@masnet.uucp>
Date: 6 Aug 89 15:35:00 GMT
Organization: Canada Remote Systems Limited, Mississauga, ON, Canada
Lines: 26

>How does one detect the keypress of a control character in dBase.
>(Actual enviro is FoxBase under SCO)

tp>use the inkey() function. I've used something along the following 
tp>for the applications I do when I want a character without making the 
tp>user hit CR.

tp>i  = 0
tp>do while i = 0
tp>        i = inkey()
tp>enddo

This may work fine under DOS where the CPU has nothing better to do than
continually poll the keyboard, but in a Xenix environment, you have
just created a totally process bound program which may degrade the
performance for every other user on the system.

Much better with Foxbase under either Xenix or DOS is

i = inkey(0)

The '0' tells Foxbase to wait for the next character to be typed.  Under
Xenix, Foxbase would stop using the CPU until Xenix got the interrupt
caused by the operator pressing the key.
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 * QDeLuxe 1.00 #606