Here is a little example program I wrote a few years ago.
The program is tested on SCO-Unix, HP-Unix and Linux.
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <termios.h>
/* kleine Unterschiede zwischen Unix-Varianten */
#define SCO
#undef HPUX
/*
* Lesen von STDIN ohne Blockierung
*/
void main()
{
int kb;
struct termios term;
int omin,otime;
#ifdef SCO
kb=stdin->__file; /* File-Descriptor SCO-Unix */
#endif
#ifdef HPUX
kb=(stdin->__fileH << 8) | stdin->__fileL; /* File Descriptor HP-Unix */
#endif
/* Terminal auf Non-Blocking umstellen */
fcntl(kb,F_SETFL,fcntl(kb,F_GETFL,0)|O_NDELAY);
/* zusaetzliche Einstellungen ueber TERMIO */
/* zunaechst alte Werte sichern */
tcgetattr(kb,&term);
omin=term.c_cc[VTIME];
otime=term.c_cc[VMIN];
/* neue Werte setzen */
term.c_lflag &= ~ICANON;
term.c_cc[VTIME]=0;
term.c_cc[VMIN]=0;
tcsetattr(kb,TCSANOW,&term);
/* Schleife bis Taste gedrueckt */
while (1) {
fprintf(stdout,"Bitte Taste druecken !!!\n");
if (getc(stdin) >= 0) break;
}
/* alten Zustand wieder herstellen */
tcgetattr(kb,&term);
term.c_lflag |= ICANON;
term.c_cc[VTIME]=otime;
term.c_cc[VMIN]=omin;
tcsetattr(kb,TCSANOW,&term);
exit(0);
}
/* end main() */
Hermann Betz
http://www.yellowstone-soft.de
[EMAIL PROTECTED]
maixy schrieb:
> Hi all,
> I want to get the character while I strike any key,I try to use getchar(),but it
>need to strike ENTER to end of string,can I get the value of key immediately before I
>strike ENTER.In DOS,I can use kbhit() to check if there is any key to be striked,but
>how can I do in linux?
> I have no idea how to get the key. Do you have any idea?
>
> Thanks!
>
> Michael
>
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