Visit Our UNIX and Linux User Community

Linux and UNIX Man Pages

Test Your Knowledge in Computers #244
Difficulty: Medium
Networking research in the early 1970s by Robert E. Kahn and Vint Cerf let to the formulation of the Transmission Control Program (TCP), and its specification in December 1974 in RFC 699.
True or False?
Linux & Unix Commands - Search Man Pages

xchangekeyboarddevice(3) [centos man page]

XCHANGEKEYBOARDDEVIC(3) 												   XCHANGEKEYBOARDDEVIC(3)

NAME
XChangeKeyboardDevice - change which device is used as the X keyboard 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. SEE ALSO
XChangePointerDevice(3) 03/09/2013 XCHANGEKEYBOARDDEVIC(3)

Check Out this Related Man Page

XChangeKeyboardDevice(3X11)					    X FUNCTIONS 				       XChangeKeyboardDevice(3X11)

NAME
XChangeKeyboardDevice - change which device is used as the X keyboard SYNTAX
Status XChangeKeyboardDevice(display, device) 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. SEE ALSO
XChangePointerDevice Programming With Xlib X Version 11 Release 6.6 XChangeKeyboardDevice(3X11)

Featured Tech Videos