NetNews Offline 2/NetNews Offline Volume 2.iso/news/comp/lang/c-part2/13252

Internet Message Format | 1996-08-05 | 1.7 KB

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From: Lawrence Kirby <[e-mail]>
Newsgroups: comp.lang.c
Subject: Re: key input: "hot" keys via standard libraries (unix c)
Date: Fri, 05 Apr 96 14:57:13 GMT
Organization: none
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References: <Pine.SUN.3.92.960404211350.28756B-100000@suntan>
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In article <Pine.SUN.3.92.960404211350.28756B-100000@suntan>
           [e-mail] "CS" writes:

>Hello! Does stdio.h have the capabilities to support the implementation of
>"hot" keys? My "hot" key routine is the menu navigator of a loan program
>and needs to meet the requirements that make "hot" key what it is:
> 1) Must never print to the screen the key pressed.
> 2) Must NOT wait for ENTER to be pressed before reading th keystroke.
> 3) IF no key has been pressed, the program can do something else
>(like update a clock with seconds digits) and then go back and wait for
>the key.

No, standard C does not support this.

>Thanks a million! Please don't refer me to non standard libraries. This
>program has to be as least platform-dependent as possible. The
>libraries I have at my disposal are stdio.h, time.h, ctype.h, locale.h,
>math.h, signal.h, stdlib.h & limits.h.

Without using non-standard libraries/system calls you simply can't do it.
The FAQ discusses it, and has just been posted to this newsgroup. You can also
ftp it from rtfm.mit.edu under /pub/usenet/comp.lang.c

--
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Lawrence Kirby | [e-mail]
Wilts, England | [e-mail]
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