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UNIX equiv of 'kbhit()' ??

Posted on 1998-03-11
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Last Modified: 2012-08-13
I am working with SCO Unix using gcc for my compiler. I need to know the equiv of 'kbhit()'?  thanks.
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Question by:kellyjj
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julio011597 earned 50 total points
ID: 1257664
There's no equivalent to kbhit() on Unix.

To handle keybord (and cursor position, and mouse, and windows, and so on) Unix has the "curses" library:

try man curses.

HTH.
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by:kellyjj
ID: 1257665
Do you know where I can get some source code that could show me how to do this my self? or documentation on curses lib?  I don't have the man pages.
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by:julio011597
ID: 1257666
Hmmm... i'm afraid i don't; i've never needed curses myself, so don't know where you could get material from.

Just a few thoughts:

1. among the GNU stuff there is all to support C programming, so i guess they have man pages, too;

2. a net search for "man curses", or "man pages", or such, may also be of great help; there *is* stuff online (somewhere).

3. reject my answer, increase the points a bit (say 50), and wait for a better answer than mine; if nobody else comes in (not probable) you could anyway let me resubmit my answer, later.

Good luck.
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by:kellyjj
ID: 1257667
Here you go. You at least told me that there is no equiv.  And which lib deals with it.   Thanks
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Expert Comment

by:macdonaldal
ID: 1257668
Kellyjj - I don't know if you have solved this problem - but I have just had to deal with it.
The solution I came up with is this - use the curses.h  lib and then use the function nodelay( stdwin, TRUE)
no you need to reset this at the end of your function and curse needs to be initialised first - If you want a good basic book on curses I suggest - "Programming with curses" by John Strang.
Alex
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Expert Comment

by:BichiX
ID: 1257669
Para lograrlo tienes que probar con las propiedades de la terminal...
Por default la terminal esta en modo caconico asi que la opcion es colocarla del otro modo !!!
Con esto lo lograras !!! y sin hacer uso de la libreria "ncurses.h" !!!

#include <stdio.h>
#include <string.h>
#include <termios.h>
#include <sys/time.h>

int main(){
        struct termios  tio0, tio1;
        struct timeval  tv;
        fd_set          rfds;

        /* Modo de Edicion Canonica ki */
        tcgetattr(0,&tio0);
        memcpy(&tio1,&tio0,sizeof(struct termios));
        tio1.c_lflag &= ~ICANON;
        tcsetattr(0,TCSANOW,&tio1);

        /* Es un kbhit() */
        FD_ZERO(&rfds);
        FD_SET(0,&rfds);
        tv.tv_usec      = 0;
        tv.tv_sec       = 1;
        select(1,&rfds,NULL,NULL,&tv);
        printf("%d\n",FD_ISSET(0,&rfds) ? 1:0);

        /* Modo de edicion Canonica vissza */
        tcsetattr(0,TCSANOW,&tio0);

        return( 0 );
}

Recuerda Desactivar este modo y dejarlo como estaba antes!!!
BichiX...
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