hpux man page for xbell

XBell() 																   XBell()

Name
  XBell - ring the bell.

Synopsis
  XBell(display, percent)
	Display *display;
	int percent;

Arguments
  display  Specifies a connection to an X server; returned from XOpenDisplay().

  percent  Specifies the volume for the bell, relative to the base volume set with XChangeKeyboardControl().  Possible values are -100 (off),
	   through 0 (base volume), to 100 (loudest) inclusive.

Description
  Rings the bell on the keyboard at a volume relative to the base volume, if possible.	percent can range from -100 to 100 inclusive (else  a
  BadValue error).  The volume at which the bell is rung when percent is nonnegative is:
       volume = base - [(base * percent) / 100] + percent
  and when percent is negative:
       volume = base + [(base * percent) / 100]

  To change the base volume of the bell, set the bell_percent variable of XChangeKeyboardControl().

Errors
  BadValue  percent < -100 or percent >100.

See Also
  XAutoRepeatOff(), XAutoRepeatOn(), XChangeKeyboardControl(), XGetDefault(), XGetKeyboardControl(), XGetPointerControl().

Xlib - User Preferences 														   XBell()