XDeviceBell(3X11) X Version 11(Release 5) XDeviceBell(3X11)
NAME
XDeviceBell - ring a bell on a device supported through the input
extension
SYNTAX
Status XDeviceBell(display, device, feedbackclass, feedbackid, percent)
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.
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XDeviceBell(3X11) X Version 11(Release 5) XDeviceBell(3X11)
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 ALSO
XChangeFeedbackControl(3X), XBell(3X)
Programming With Xlib
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