XChangePointerDevice(3X11) XChangePointerDevice(3X11)
NAME
XChangePointerDevice - change which device is the X pointer
SYNOPSIS
Status XChangePointerDevice(display, device xaxis, yaxis)
Display *display;
XDevice *device;
int xaxis;
int yaxis;
ARGUMENTS
Specifies the connection to the X server. Specifies the device to be used as the X pointer. Specifies the axis of the device to be used
as the X pointer x-axis. 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
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. 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(3X11)
Programming With Xlib
XChangePointerDevice(3X11)