XDeviceBell

NAME

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

SYNTAX

: 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.