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'\" t
.\" Copyright 1999 Oracle and/or its affiliates. All rights reserved.
.\"
.\" Permission is hereby granted, free of charge, to any person obtaining a
.\" copy of this software and associated documentation files (the "Software"),
.\" to deal in the Software without restriction, including without limitation
.\" the rights to use, copy, modify, merge, publish, distribute, sublicense,
.\" and/or sell copies of the Software, and to permit persons to whom the
.\" Software is furnished to do so, subject to the following conditions:
.\"
.\" The above copyright notice and this permission notice (including the next
.\" paragraph) shall be included in all copies or substantial portions of the
.\" Software.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
.\" IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
.\" FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
.\" THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
.\" LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
.\" FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
.\" DEALINGS IN THE SOFTWARE.
.\"
.TH XkbAddDeviceLedInfo __libmansuffix__ __xorgversion__ "XKB FUNCTIONS"
.SH NAME
XkbAddDeviceLedInfo \- Initialize an XkbDeviceLedInfoRec structure
.SH SYNOPSIS
.HP
.B XkbDeviceLedInfoPtr XkbAddDeviceLedInfo
.BI "(\^XkbDeviceInfoPtr " "device_info" "\^,"
.BI "unsigned int " "led_class" "\^,"
.BI "unsigned int " "led_id" "\^);"
.if n .ti +5n
.if t .ti +.5i
.SH ARGUMENTS
.TP
.I \- device_info
structure in which to add LED info
.TP
.I \- led_class
input extension class for LED device of interest
.TP
.I \- led_id
input extension ID for LED device of interest
.SH DESCRIPTION
.LP
.I XkbAddDeviceLedInfo
first checks to see whether an entry matching
.I led_class
and
.I led_id
already exists in the
.I device_info->leds
array. If it finds a matching entry, it returns a pointer to that entry. Otherwise, it checks to be sure
there is at least one empty entry in
.I device_info->leds
and extends it if there is not enough room. It then increments
.I device_info->num_leds
and fills in the next available entry in
.I device_info->leds
with
.I led_class
and
.I led_id.
If successful,
.I XkbAddDeviceLedInfo
returns a pointer to the XkbDeviceLedInfoRec structure that was initialized. If unable to allocate
sufficient storage, or if
.I device_info
points to an invalid XkbDeviceInfoRec structure, or if
.I led_class
or
.I led_id
are inappropriate,
.I XkbAddDeviceLedInfo
returns NULL.
To allocate additional space for button actions in an XkbDeviceInfoRec structure, use
.I XkbResizeDeviceButtonActions.
.SH STRUCTURES
.LP
Information about X Input Extension devices is transferred between a client program and the Xkb
extension in an XkbDeviceInfoRec structure:
.nf
typedef struct {
char * name; /\(** name for device */
Atom type; /\(** name for class of devices */
unsigned short device_spec; /\(** device of interest */
Bool has_own_state; /\(** True=>this device has its own state */
unsigned short supported; /\(** bits indicating supported capabilities */
unsigned short unsupported; /\(** bits indicating unsupported capabilities */
unsigned short num_btns; /\(** number of entries in btn_acts */
XkbAction * btn_acts; /\(** button actions */
unsigned short sz_leds; /\(** total number of entries in LEDs vector */
unsigned short num_leds; /\(** number of valid entries in LEDs vector */
unsigned short dflt_kbd_fb; /\(** input extension ID of default (core kbd) indicator */
unsigned short dflt_led_fb; /\(** input extension ID of default indicator feedback */
XkbDeviceLedInfoPtr leds; /\(** LED descriptions */
} XkbDeviceInfoRec, *XkbDeviceInfoPtr;
typedef struct {
unsigned short led_class; /\(** class for this LED device*/
unsigned short led_id; /\(** ID for this LED device */
unsigned int phys_indicators; /\(** bits for which LEDs physically present */
unsigned int maps_present; /\(** bits for which LEDs have maps in maps */
unsigned int names_present; /\(** bits for which LEDs are in names */
unsigned int state; /\(** 1 bit => corresponding LED is on */
Atom names[XkbNumIndicators]; /\(** names for LEDs */
XkbIndicatorMapRec maps; /\(** indicator maps for each LED */
} XkbDeviceLedInfoRec, *XkbDeviceLedInfoPtr;
.fi
.SH "SEE ALSO"
.BR XkbResizeDeviceButtonActions (__libmansuffix__)
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