XChangePointerDevice

Langue: en

Autres versions - même langue

Version: 10/02/2009 (ubuntu - 24/10/10)

Section: 3 (Bibliothèques de fonctions)

Sommaire

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)