|
Table of Contents
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 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.
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.
- 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
Table of Contents
|
