XDEVICEBELL(3) libXi XDEVICEBELL(3)NAMEXDeviceBell - ring a bell on a device supported through the input
extension
SYNTAX
#include <X11/extensions/XInput.h>
Status XDeviceBell(Display *display, XDevice *device,
XID *feedbackclass, XID *feedbackid, int *percent);
ARGUMENTS
display
Specifies the connection to the X server.
device
Specifies the device with which the bell is associated.
feedbackclass
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.
DESCRIPTION
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 parameters contain values returned by an
XGetFeedbackControl request and uniquely identify the bell to ring. If
a feedbackclass 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 argument 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 XChangeFeedbackControl.
XDeviceBell can generate a BadDevice or a BadValue error.
DIAGNOSTICS
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.
SEE ALSOXChangeFeedbackControl(3), XBell(3)
03/04/2009 XDEVICEBELL(3)
