XChangePointerDevice(3X11) X Version 11(Release 5) XChangePointerDevice(3X11)
NAME
XChangePointerDevice - change which device is the X pointer
SYNTAX
Status XChangePointerDevice(display, device xaxis, yaxis)
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
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.
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XChangePointerDevice(3X11) X Version 11(Release 5) XChangePointerDevice(3X11)
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
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