XISetClientPointer, XIGetClientPointer − set or get the ClientPointer device.


#include <X11/extensions/XInput2.h>

XISetClientPointer( Display *display,
Window win,
int deviceid);

Bool XIGetClientPointer( Display *display,
Window win,
int *device);

Specifies the connection to the X server.

Specifies a window belonging to the client. May be None.

Specifies the ClientPointer device.


The ClientPointer is the device that is percieved to be the
core pointer for non−XI protocol requests and replies. Each
time a protocol message needs device−dependent data and the
device is not explicitly given, the ClientPointer device is
used to obtain the data. For example, a XQueryPointer request
will return the coordinates of the ClientPointer.

XISetClientPointer request sets the ClientPointer device for
the client that owns the given window. If win is None, the
requesting client´s ClientPointer is set to the device
specified with deviceid. Only master pointer devices can be set
as ClientPointer.

XISetClientPointer and can generate a BadDevice and a BadWindow

The XIGetClientPointer request returns the ClientPointer´s
device ID for the client that owns the given window. If win is
None, the requesting client´s ClientPointer is returned.

win may be a client ID instead of a window.

XIGetClientPointer can generate a BadWindow error.


An invalid device was specified. The device does not
exist or is not a master pointer device.

A value for a Window argument does not name a defined


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