MirBSD manpage: XDeviceBell(3)

XDeviceBell(3X11)          X FUNCTIONS          XDeviceBell(3X11)


     XDeviceBell - ring a bell on a device supported through the
     input extension


     Status XDeviceBell(Display *display, XDevice *device, XID
          *feedbackclass, XID *feedbackid, int *percent);


     display     Specifies the connection to the X server.

     device      Specifies the device with which the bell is

                 Specifies the class of the feedback with which
                 the bell is associated.

     feedbackid  Specifies the id of the feedback with which the
                 bell is associated.

     percent     Specifies the volume in the range -100 to 100 at
                 which the bell should be rung.


     The XDeviceBell request causes the server to ring a bell on
     the specified feedback of the specified device, if possible.
     The specified volume is relative to the base volume for the
     bell. If an invalid device is specified, a BadDevice error
     will be returned.  The feedbackclass and feedbackid parame-
     ters contain values returned by an XGetFeedbackControl
     request and uniquely identify the bell to ring.  If a feed-
     backclass is specified that does not support a bell, or if a
     nonexistent feedbackid is specified, or a percent value is
     specified that is not in the range -100 to 100, a BadValue
     error will be returned.

     The volume at which the bell is rung when the percent argu-
     ment is nonnegative is:

          base - [(base * percent) / 100] + percent

     The volume at which the bell rings when the percent argument
     is negative is:

          base + [(base * percent) / 100]

     To change the base volume of the bell, use XChangeFeed-

     XDeviceBell can generate a BadDevice or a BadValue error.

XFree86                   Version 4.5.0                         1

XDeviceBell(3X11)          X FUNCTIONS          XDeviceBell(3X11)


     BadDevice   An invalid device was specified.  The specified
                 device does not exist, or has not been opened by
                 this client via XOpenInputDevice.

     BadValue    An invalid feedbackclass, feedbackid, or percent
                 value was specified.


     XChangeFeedbackControl(3X), XBell(3X)
     Programming With Xlib

XFree86                   Version 4.5.0                         2

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