NAME

       XChangePointerDevice - change which device is the X pointer

SYNOPSIS

       #include <X11/extensions/XInput.h>

       Status XChangePointerDevice( Display *display,
                                    XDevice *device,
                                    int xaxis,
                                    int yaxis);

       display
              Specifies the connection to the X server.

       device
              Specifies the device to be used as the X pointer.

       xaxis
              Specifies the axis of the device to be used as the X
              pointer x-axis.

       yaxis
              Specifies the axis of the device to be used as the X
              pointer y-axis.

DESCRIPTION

           The XChangePointerDevice request causes the server to use the
           specified device as the X pointer. The device must have been
           opened by the client via XOpenDevice or a BadDevice error will
           result. The device must support input class Valuators or a
           BadMatch error will result. If the implementation does not
           support use of the specified device as the X pointer, 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 = MappingPointer is sent to all clients. The
           specified device becomes the X pointer, and the old X pointer
           becomes accessible through the input extension protocol
           requests.

           XChangePointerDevice 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 input
                  devices (pointer or keyboard). This error may also occur
                  if the server implementation does not support using the
                  specified device as the X pointer.

           BadMatch
                  This error may occur if an XChangePointerDevice request
                  was made specifying a device that has less than two
                  valuators, or specifying a valuator index beyond the
                  range supported by the device.

SEE ALSO

           XChangeKeyboardDevice(3)

                                            03/09/2013                    XCHANGEPOINTERDEVICE(3)