Re: ASCII Codes...

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#454

From: Nik Synytskyy
Date: Thu, 17 Sep 1998 00:00

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John Skilbeck wrote in message <6ton52$ip0$1@news3.cableinet.co.uk>...
>I am having problems detecting whether a cursor key is pressed or certain
>capital letters within TP 7.0.
>
>For example, the UP arrow on the keyboard is ASCII code 0 72, 'H' is ASCII
>code 72.
>
>Is it possible to detect the difference between these keys in Pascal? If
so,
>how??
>
>Any suggestions would be much appreciated.
>
>Thanks,
>
>John.
>
>


The general idea is (as all the programs listed above demonstrate) that the
arrow keys put not one, but TWO characters into the keyboard buffer, the
first always being #0.  If you want to check if a direction key is pressed,
look for #0, and then the code of the direction key.


Nik.

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From: "Nik Synytskyy" <nikita@NOSPAMmondenet.com>
Subject: Re: ASCII Codes...
Date: 1998/09/17
Message-ID: <yT_L1.1904$VW6.13569796@news.magma.ca>
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