XChangeKeyboardDevice - change which device is used as the X keyboard
SYNTAX
Status XChangeKeyboardDevice(Display *display, XDevice
*device);
ARGUMENTS
display
Specifies the connection to the X server.
device
Specifies the device to be used as the X keyboard.
DESCRIPTION
The XChangeKeyboardDevice request causes the server to use the specified
device as the X keyboard. The device must have been previously opened by the
requesting client via XOpenDevice or a BadDevice error will result.
The device must support input class Keys, or a BadMatch error
will result. If the server implementation does not support using the requested
device as the X keyboard, a BadDevice error will result.
If the specified device is grabbed by another client, AlreadyGrabbed
is returned. If the specified device is frozen by a grab on another device,
GrabFrozen is returned.
If the request is successful, Success is returned.
If the request succeeds,
a ChangeDeviceNotify event is sent to all clients that have selected that
event. A MappingNotify event with request = MappingKeyboard
is sent to all clients.
The specified device becomes the X keyboard and
the old X keyboard becomes accessible through the input extension
protocol requests.
XChangeKeyboardDevice can generate a BadDevice or a BadMatch
error.
DIAGNOSTICS
BadDevice
An invalid device was specified. The specified device does not exist, has
not been opened by this client via XOpenInputDevice, or is already
one of the core X device (pointer or keyboard). This error may
also occur if
the server implementation does not support using the specified device as
the X keyboard.
BadMatch
This error may occur if an XChangeKeyboardDevice request was made
specifying a device that has no keys.
