69 lines
2.4 KiB
Plaintext
69 lines
2.4 KiB
Plaintext
.ds xL Programming With Xlib
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.TH XChangePointerDevice 3X11 "Release 5" "X Version 11" "X FUNCTIONS"
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.SH NAME
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XChangePointerDevice \- change which device is the X pointer
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.SH SYNTAX
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Status XChangePointerDevice\^(\^\fIdisplay\fP, \fIdevice\fP\^ \fIxaxis\fP\^, \fIyaxis\fP\^)
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.br
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Display *\fIdisplay\fP\^;
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.br
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XDevice *\fIdevice\fP\^;
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.br
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int \fIxaxis\fP\^;
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.br
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int \fIyaxis\fP\^;
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.br
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.SH ARGUMENTS
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.TP 12
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.I display
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Specifies the connection to the X server.
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.TP 12
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.I device
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Specifies the device to be used as the X pointer.
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.TP 12
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.I xaxis
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Specifies the axis of the device to be used as the X pointer x-axis.
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.TP 12
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.I yaxis
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Specifies the axis of the device to be used as the X pointer y-axis.
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.SH DESCRIPTION
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The \fIXChangePointerDevice\fP request causes the server to use the specified
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device as the X pointer. The device must have been opened by the client via
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\fIXOpenDevice\fP or a \fIBadDevice\fP error will result. The device must
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support input class \fIValuators\fP or a \fIBadMatch\fP error will result.
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If the implementation does not support use of the specified device as the
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X pointer, a \fIBadDevice\fP error will result.
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.P
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If the specified device is grabbed by another client, \fIAlreadyGrabbed\fP
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is returned. If the specified device is frozen by a grab on another device,
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\fIGrabFrozen\fP is returned.
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If the request is successful, \fISuccess\fP is returned.
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.P
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If the request succeeds,
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a \fIChangeDeviceNotify\fP event is sent to all clients that have selected that
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event. A \fIMappingNotify\fP event with request = \fIMappingPointer\fP is
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sent to all clients.
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The specified device becomes the X pointer, and
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the old X pointer becomes accessible through the input extension
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protocol requests.
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.P
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\fIXChangePointerDevice\fP can generate a \fIBadDevice\fP or a \fIBadMatch\fP
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error.
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.SH DIAGNOSTICS
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.TP 12
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\fIBadDevice\fP
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An invalid device was specified. The specified device does not exist, has
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not been opened by this client via \fIXOpenInputDevice\fP, or is already
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one of the core X input devices (pointer or keyboard). This error may also
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occur if the server implementation does not support using the specified
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device as the X pointer.
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.TP 12
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\fIBadMatch\fP
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This error may occur if an \fIXChangePointerDevice\fP request was made
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specifying a device that has less than two valuators, or specifying a
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valuator index beyond the range supported by the device.
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.SH "SEE ALSO"
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XChangeKeyboardDevice
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.br
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\fI\*(xL\fP
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