1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276
|
'\" t
.\" Title: xgetdevicecontrol
.\" Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.74.3 <http://docbook.sf.net/>
.\" Date: 10/02/2009
.\" Manual: [FIXME: manual]
.\" Source: [FIXME: source]
.\" Language: English
.\"
.TH "XGETDEVICECONTROL" "libmansuffix" "10/02/2009" "[FIXME: source]" "[FIXME: manual]"
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
XGetDeviceControl, XChangeDeviceControl \- query and change input device controls
.SH "SYNOPSIS"
.sp
.nf
#include <X11/extensions/XInput\&.h>
.fi
.sp
.nf
XDeviceControl *XGetDeviceControl( Display *display,
XDevice *device,
int *controlType);
.fi
.sp
.nf
int XChangeDeviceControl( Display *display,
XDevice *device,
int controlType,
XDeviceControl *control);
.fi
.sp
.nf
display
Specifies the connection to the X server\&.
.fi
.sp
.nf
device
Specifies the device whose control is to be interrogated
or modified\&.
.fi
.sp
.nf
controlType
Specifies the type of control to be interrogated or
changed\&.
.fi
.sp
.nf
control
Specifies the address of an XDeviceControl structure
that contains the new values for the Device\&.
.fi
.SH "DESCRIPTION"
.sp
.if n \{\
.RS 4
.\}
.nf
These requests are provided to manipulate those input devices
that support device control\&. A BadMatch error will be generated
if the requested device does not support any device controls\&.
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
Valid device control types that can be used with these requests
include the following:
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
DEVICE_RESOLUTION Queries or changes the resolution of
valuators on input devices\&.
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
The XGetDeviceControl request returns a pointer to an
XDeviceControl structure\&.
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
XGetDeviceControl can generate a BadDevice or BadMatch error\&.
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
The XChangeDeviceControl request modifies the values of one
control on the specified device\&. The control is identified by
the id field of the XDeviceControl structure that is passed
with the request\&.
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
XChangeDeviceControl can generate a BadDevice, BadMatch, or
BadValue error\&.\&.SH STRUCTURES Each control is described by a
structure specific to that control\&. These structures are
defined in the file XInput\&.h\&.
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
XDeviceControl is a generic structure that contains two fields
that are at the beginning of each class of control:
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
typedef struct {
XID class;
int length;
} XDeviceControl;
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
The XDeviceResolutionState structure defines the information
that is returned for device resolution for devices with
valuators\&.
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
typedef struct {
XID control;
int length;
int num_valuators;
int* resolutions;
int* min_resolutions;
int* max_resolutions;
} XDeviceResolutionState;
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
The XDeviceResolutionControl structure defines the attributes
that can be controlled for keyboard Devices\&.
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
typedef struct {
XID control;
int length;
int first_valuator;
int num_valuators;
int* resolutions;
} XDeviceResolutionControl;
.fi
.if n \{\
.RE
.\}
.SH "DIAGNOSTICS"
.sp
.if n \{\
.RS 4
.\}
.nf
BadDevice
An invalid device was specified\&. The specified device
does not exist or has not been opened by this client via
XOpenInputDevice\&. 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
XChangeKeyboardDevice or XChangePointerDevice requests\&.
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
BadMatch
This error may occur if an XGetDeviceControl request was
made specifying a device that has no controls or an
XChangeDeviceControl request was made with an
XDeviceControl structure that contains an invalid Device
type\&. It may also occur if an invalid combination of
mask bits is specified ( DvKey but no DvAutoRepeatMode
for keyboard Devices), or if an invalid KeySym is
specified for a string Device\&.
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
BadValue
Some numeric value falls outside the range of values
accepted by the XChangeDeviceControl 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\&.
.fi
.if n \{\
.RE
.\}
|