SYNOPSIS

#include <X11/extensions/XInput.h>

Status XChangeKeyboardDevice( Display *display,
                              XDevice *device);

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.