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From: brianh@hpcvia.CV.HP.COM (brian_helterline)
Newsgroups: comp.lang.c
Subject: Re: hitkb exists?
Message-ID: <18060011@hpcvia.CV.HP.COM>
Date: 5 Feb 90 16:55:29 GMT
References: <RON.90Feb4114158@clarity.Princeton.EDU>
Organization: Hewlett-Packard Co., Corvallis, Oregon
Lines: 34

ron@clarity.Princeton.EDU (Ronald Beekelaar) writes:
>Hi,

>  I left out some needed information in my question last night.
>I was wondering whether I can silently test whether a key has been pressed in
>C, without having to read(..). I forgot to tell that I am using MS-C on an
>IBM-PC. 

>  I would help me enormously, if somebody could tell me how I should do this.

>Thanks,
>--
>------
>ron
>------
>----------

	unsigned status;

	status = _bios_keybrd( _KEYBRD_READY );
	if( status == 0 )
	  /* no key pressed */
	else
	  /* some key was pressed */


	If you are concerned about the SHIFT, CTRL, ALT, SCROLL LOCK,
	NUM LOCK, CAPS LOCK, and INSERT use _bios_keybrd( _KEYBRD_SHIFTSTATUS )
	with the above.

	-------- OR ---------------

	You can use the function int kbhit(void) to check if a key has been
	pressed but not the SHIFT, CTRL, ALT, ....