Re: A better Beep

[Marcelo Duarte]

Whats happens if a program calls bepp with invalid values for dwFreq and 
dwDur on a linux console?
(the programmer thinks that dwFreq and dwDur are ignored by Win95).

David Lee Lambert escreveu:
> Changelog:
>  Support beeping with the PC speaker when running from the Linux console
>
> ------------------------------------------------------------------------
>
> --- dlls/kernel/console.c.v1_39	Fri May 13 15:38:16 2005
> +++ dlls/kernel/console.c	Fri May 13 21:02:19 2005
> @@ -193,9 +193,19 @@
>  */
> BOOL WINAPI Beep( DWORD dwFreq, DWORD dwDur )
> {
> -    static const char beep = '\a';
> -    /* dwFreq and dwDur are ignored by Win95 */
> -    if (isatty(2)) write( 2, &beep, 1 );
> +   if (strcmp(getenv("TERM"),"linux")==0 && isatty(2)) {
> +      /* the Linux console supports setting frequency and duration */
> +      char szBeep[50];
> +      snprintf(szBeep,50,"\x1B[10;%d]\x1B[11;%d]\a",(int)dwFreq,(int)dwDur);
> +      write( 2, szBeep, strlen(szBeep) );
> +      usleep(dwDur*1000);
> +   } else if (isatty(2)) {
> +      /* dwFreq and dwDur are ignored by Win95 */
> +      static const char beep = '\a';
> +      write( 2, &beep, 1 );
> +   } else {
> +      /* TODO: we could play a .wav file instead... */
> +   }
>     return TRUE;
> }