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;
}