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Mail Archives: djgpp/2004/07/20/14:46:33

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Date: Tue, 20 Jul 2004 21:45:07 +0200
From: "Eli Zaretskii" <eliz AT gnu DOT org>
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To: djgpp AT delorie DOT com
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In-reply-to: <2m40mjFhp3nlU1@uni-berlin.de> (message from Martin Ambuhl on
Tue, 20 Jul 2004 03:42:09 -0400)
Subject: Re: Function kbhit()?
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> From: Martin Ambuhl <mambuhl AT earthlink DOT net>
> Newsgroups: comp.os.msdos.djgpp
> Date: Tue, 20 Jul 2004 03:42:09 -0400
> 
> *Maybe* it's because when !kbhit(), you don't call getch() but you do 
> store a value into *key.

I think this does not happen because if `kbhit' returns zero, there's
no keypress in the BIOS queue, and `bioskey' then gets stuck until a
key is pressed, at which time it returns that key.  So I think what
you describe could only happen in the (extremely rare) case where a
key is pressed between the time the BIOS call in `kbhit' returns and
the time `bioskey' is called.

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