'\" t
.\"     Title: xchangepointerdevice
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.77.1 <http://docbook.sf.net/>
.\"      Date: 03/09/2013
.\"    Manual: \ \&
.\"    Source: \ \&
.\"  Language: English
.\"
.TH "XCHANGEPOINTERDEVICE" "libmansuffix" "03/09/2013" "\ \&" "\ \&"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
XChangePointerDevice \- change which device is the X pointer
.SH "SYNOPSIS"
.sp
.nf
#include <X11/extensions/XInput\&.h>
.fi
.sp
.nf
Status XChangePointerDevice( Display *display,
                             XDevice *device,
                             int xaxis,
                             int yaxis);
.fi
.sp
.nf
display
       Specifies the connection to the X server\&.
.fi
.sp
.nf
device
       Specifies the device to be used as the X pointer\&.
.fi
.sp
.nf
xaxis
       Specifies the axis of the device to be used as the X
       pointer x\-axis\&.
.fi
.sp
.nf
yaxis
       Specifies the axis of the device to be used as the X
       pointer y\-axis\&.
.fi
.SH "DESCRIPTION"
.sp
.if n \{\
.RS 4
.\}
.nf
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\&.
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
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\&.
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
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\&.
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
XChangePointerDevice can generate a BadDevice or a BadMatch
error\&.
.fi
.if n \{\
.RE
.\}
.SH "DIAGNOSTICS"
.sp
.if n \{\
.RS 4
.\}
.nf
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\&.
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
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\&.
.fi
.if n \{\
.RE
.\}
.SH "SEE ALSO"
.sp
.if n \{\
.RS 4
.\}
.nf
XChangeKeyboardDevice(libmansuffix)
.fi
.if n \{\
.RE
.\}