Интерактивная система просмотра системных руководств (man-ов)
XDeviceBell (3)
>> XDeviceBell (3) ( Разные man: Библиотечные вызовы )
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.
