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.\" Copyright 1999 Sun Microsystems, Inc. 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 XkbAddGeomOverlayKey __libmansuffix__ __xorgversion__ "XKB FUNCTIONS"
.SH NAME
XkbAddGeomOverlayKey \- Add a key to an existing overlay row
.SH SYNOPSIS
.HP
.B XkbOverlayKeyPtr XkbAddGeomOverlayKey
.BI "(\^XkbOverlayPtr " "overlay" "\^,"
.BI "XkbRowPtr " "row" "\^,"
.BI "char *" "under" "\^);"
.if n .ti +5n
.if t .ti +.5i
.SH ARGUMENTS
.TP
.I \- overlay
overlay to be updated
.TP
.I \- row
row in overlay to be updated
.TP
.I \- under
primary name of the key to be considered
.SH DESCRIPTION
.LP
Xkb provides functions to add a single new element to the top-level keyboard
geometry. In each case the
.I num_ *
fields of the corresponding structure is incremented by 1. These functions do
not change
.I sz_*
unless there is no more room in the array. Some of these functions fill in the
values of the element's structure from the arguments. For other functions, you
must explicitly write code to fill the structure's elements.
The top-level geometry description includes a list of
.I geometry properties.
A geometry property associates an arbitrary string with an equally arbitrary
name. Programs that display images of keyboards can use geometry properties as
hints, but they are not interpreted by Xkb. No other geometry structures refer
to geometry properties.
.I XkbAddGeomOverlayKey
adds one key to the
.I row
in the
.I overlay.
If there is no key named
.I under
in the row of the underlying section,
.I XkbAddGeomOverlayKey
returns NULL.
.SH STRUCTURES
.LP
.nf
typedef struct _XkbOverlayKey {
XkbKeyNameRec over; /\(** name of this overlay key */
XkbKeyNameRec under; /\(** name of the key under this overlay key */
} XkbOverlayKeyRec,*XkbOverlayKeyPtr;
.fi
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