140 lines
4.5 KiB
Groff
140 lines
4.5 KiB
Groff
.\"
|
|
.\" $XFree86: xc/doc/man/Xi/XChDCtl.man,v 1.2 2001/01/27 18:20:20 dawes Exp $
|
|
.\"
|
|
.\"
|
|
.\" Copyright ([\d,\s]*) by Hewlett-Packard Company, Ardent Computer,
|
|
.\"
|
|
.\" Permission to use, copy, modify, distribute, and sell this documentation
|
|
.\" for any purpose and without fee is hereby granted, provided that the above
|
|
.\" copyright notice and this permission notice appear in all copies.
|
|
.\" Ardent, and Hewlett-Packard make no representations about the
|
|
.\" suitability for any purpose of the information in this document. It is
|
|
.\" provided \`\`as is'' without express or implied warranty.
|
|
.\"
|
|
.\" $Xorg: XChDCtl.man,v 1.3 2000/08/17 19:41:56 cpqbld Exp $
|
|
.ds xL Programming With Xlib
|
|
.TH XGetDeviceControl 3X11 __xorgversion__ "X FUNCTIONS"
|
|
.SH NAME
|
|
XGetDeviceControl, XChangeDeviceControl \- query and change input device controls
|
|
.SH SYNTAX
|
|
.HP
|
|
XDeviceControl *XGetDeviceControl\^(\^Display *\fIdisplay\fP\^, XDevice
|
|
*\fIdevice\fP\^, int *\fIcontrolType\fP\^);
|
|
.HP
|
|
int XChangeDeviceControl\^(\^Display *\fIdisplay\fP\^, XDevice
|
|
*\fIdevice\fP\^, int \fIcontrolType\fP\^, XDeviceControl *\fIcontrol\fP\^);
|
|
.SH ARGUMENTS
|
|
.TP 15
|
|
.I display
|
|
Specifies the connection to the X server.
|
|
.TP 15
|
|
.I device
|
|
Specifies the device whose control is to be interrogated or modified.
|
|
.TP 15
|
|
.I controlType
|
|
Specifies the type of control to be interrogated or changed.
|
|
.TP 15
|
|
.I control
|
|
Specifies the address of an \fIXDeviceControl\fP structure that contains
|
|
the new values for the Device.
|
|
.SH DESCRIPTION
|
|
These requests are provided to manipulate those input devices that
|
|
support device control. A \fIBadMatch\fP error will be generated if the
|
|
requested device does not support any device controls.
|
|
.LP
|
|
Valid device control types that can be used with these requests include the
|
|
following:
|
|
.TP 20
|
|
DEVICE_RESOLUTION
|
|
Queries or changes the resolution of valuators on input devices.
|
|
.LP
|
|
The \fIXGetDeviceControl\fP request returns a pointer to an
|
|
\fIXDeviceControl\fP structure.
|
|
.LP
|
|
\fIXGetDeviceControl\fP can generate a \fIBadDevice\fP or
|
|
\fIBadMatch\fP error.
|
|
.LP
|
|
The \fIXChangeDeviceControl\fP request modifies the values of one
|
|
control on the specified device. The control is identified by the id
|
|
field of the \fIXDeviceControl\fP structure that is passed with the
|
|
request.
|
|
.LP
|
|
\fIXChangeDeviceControl\fP can generate a \fIBadDevice\fP,
|
|
\fIBadMatch\fP, or \fIBadValue\fP error.
|
|
.SH STRUCTURES
|
|
Each control is described by a structure specific to that control.
|
|
These structures are defined in the file \fIXInput.h\fP.
|
|
.LP
|
|
\fIXDeviceControl\fP is a generic
|
|
structure that contains two fields that are at the beginning of each class
|
|
of control:
|
|
.LP
|
|
.DS
|
|
.nf
|
|
typedef struct {
|
|
.br
|
|
XID class;
|
|
.br
|
|
int length;
|
|
.br
|
|
} XDeviceControl;
|
|
.fi
|
|
.DE
|
|
.LP
|
|
The \fIXDeviceResolutionState\fP structure defines the information that is
|
|
returned for device resolution for devices with valuators.
|
|
.LP
|
|
.DS
|
|
.nf
|
|
typedef struct {
|
|
XID control;
|
|
int length;
|
|
int num_valuators;
|
|
int *resolutions;
|
|
int *min_resolutions;
|
|
int *max_resolutions;
|
|
} XDeviceResolutionState;
|
|
.fi
|
|
.DE
|
|
.LP
|
|
The \fIXDeviceResolutionControl\fP structure defines the attributes that can be
|
|
controlled for keyboard Devices.
|
|
.LP
|
|
.DS
|
|
.nf
|
|
typedef struct {
|
|
XID control;
|
|
int length;
|
|
int first_valuator;
|
|
int num_valuators;
|
|
int *resolutions;
|
|
} XDeviceResolutionControl;
|
|
.fi
|
|
.DE
|
|
.SH DIAGNOSTICS
|
|
.TP 12
|
|
\fIBadDevice\fP
|
|
An invalid device was specified. The specified device does not exist or has
|
|
not been opened by this client via \fIXOpenInputDevice\fP. This error may
|
|
also occur if some other client has caused the specified device to become
|
|
the X keyboard or X pointer device via the \fIXChangeKeyboardDevice\fP or
|
|
\fIXChangePointerDevice\fP requests.
|
|
.TP 12
|
|
\fIBadMatch\fP
|
|
This error may occur if an \fIXGetDeviceControl\fP request was made specifying
|
|
a device that has no controls or an \fIXChangeDeviceControl\fP request was
|
|
made with an \fIXDeviceControl\fP structure that contains an invalid Device
|
|
type. It may also occur if an invalid combination of mask bits is specified
|
|
(\fIDvKey\fP but no \fIDvAutoRepeatMode\fP for keyboard Devices), or if an
|
|
invalid KeySym is specified for a string Device.
|
|
.TP 12
|
|
\fIBadValue\fP
|
|
Some numeric value falls outside the range of values accepted by the
|
|
\fIXChangeDeviceControl\fP request.
|
|
Unless a specific range is specified for an argument, the full range defined
|
|
by the argument's type is accepted. Any argument defined as a set of
|
|
alternatives can generate this error.
|
|
.SH "SEE ALSO"
|
|
.br
|
|
\fI\*(xL\fP
|