XChangePointerDevice(3X11) X FUNCTIONS XChangePointerDevice(3X11)NAMEXChangePointerDevice - change which device is the X pointer
SYNTAX
Status XChangePointerDevice(Display *display, XDevice *device, int
xaxis, int yaxis);
ARGUMENTS
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 XOpenInâ
putDevice, 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
Programming With Xlib
X Version 11 libXi 1.0.1 XChangePointerDevice(3X11)
