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'\" t
.\" Copyright 1999 Oracle and/or its affiliates. All rights reserved.
.\"
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.\"
.TH XkbUpdateMapFromCore __libmansuffix__ __xorgversion__ "XKB FUNCTIONS"
.SH NAME
XkbUpdateMapFromCore \- Update a local Xkb keyboard map to reflect the mapping
expressed by a core format mapping
.SH SYNOPSIS
.HP
.B Bool XkbUpdateMapFromCore
.BI "(\^XkbDescPtr " "xkb" "\^,"
.BI "KeyCode " "first_key" "\^,"
.BI "int " "num_keys" "\^,"
.BI "int " "map_width" "\^,"
.BI "KeySym *" "core_keysyms" "\^,"
.BI "XkbChangesPtr " "changes" "\^);"
.if n .ti +5n
.if t .ti +.5i
.SH ARGUMENTS
.TP
.I \- xkb
keyboard description to update
.TP
.I \- first_key
keycode of first key description to update
.TP
.I \- num_keys
number of key descriptions to update
.TP
.I \- map_width
width of core protocol keymap
.TP
.I \- core_keysyms
symbols in core protocol keymap
.TP
.I \- changes
backfilled with changes made to Xkb
.SH DESCRIPTION
.LP
Xkb provides several functions that make it easier to apply the compatibility
map to configure a client-side Xkb keyboard mapping, given a core protocol
representation of part or all of a keyboard mapping. Obtain a core protocol
representation of a keyboard mapping from an actual server (by using
.I XGetKeyboardMapping,
for example), a data file, or some other source.
.I XkbUpdateMapFromCore
interprets input argument information representing a keyboard map in core format
to update the Xkb keyboard description passed in
.I xkb.
Only a portion of the Xkb map is updated - the portion corresponding to keys
with keycodes in the range
.I first_key
through
.I first_key + num_keys - 1.
If
.I XkbUpdateMapFromCore
is being called in response to a MappingNotify event,
.I first_key
and
.I num_keys
are reported in the MappingNotify event.
.I core_keysyms
contains the keysyms corresponding to the keycode range being updated, in core
keyboard description order.
.I map_width
is the number of keysyms per key in
.I core_keysyms.
Thus, the first
.I map_width
entries in
.I core_keysyms
are for the key with keycode
.I first_key,
the next
.I map_width
entries are for key
.I first_key + 1,
and so on.
In addition to modifying the Xkb keyboard mapping in
.I xkb, XkbUpdateMapFromCore
backfills the changes structure whose address is passed in
.I changes
to indicate the modifications that were made. You may then use
.I changes
in subsequent calls such as
.I XkbSetMap,
to propagate the local modifications to a server.
.SH "SEE ALSO"
.BR XkbSetMap (__libmansuffix__)
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