XkbUpdateMapFromCore(3) XKB FUNCTIONS XkbUpdateMapFromCore(3)
NAME
XkbUpdateMapFromCore - Update a local Xkb keyboard map to reflect the
mapping expressed by a core format mapping
SYNOPSIS
Bool XkbUpdateMapFromCore (XkbDescPtr xkb, KeyCode first_key, int
num_keys, int map_width, KeySym *core_keysyms, XkbChangesPtr
changes);
ARGUMENTS
xkb keyboard description to update
first_key
keycode of first key description to update
num_keys
number of key descriptions to update
map_width
width of core protocol keymap
core_keysyms
symbols in core protocol keymap
changes
backfilled with changes made to Xkb
DESCRIPTION
Xkb provides several functions that make it easier to apply the compati-
bility 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 XGetKeyboardMapping, for example), a data file, or some other
source.
XkbUpdateMapFromCore interprets input argument information representing
a keyboard map in core format to update the Xkb keyboard description
passed in xkb. Only a portion of the Xkb map is updated - the portion
corresponding to keys with keycodes in the range first_key through
first_key + num_keys - 1. If XkbUpdateMapFromCore is being called in
response to a MappingNotify event, first_key and num_keys are reported
in the MappingNotify event. core_keysyms contains the keysyms corre-
sponding to the keycode range being updated, in core keyboard descrip-
tion order. map_width is the number of keysyms per key in core_keysyms.
Thus, the first map_width entries in core_keysyms are for the key with
keycode first_key, the next map_width entries are for key first_key + 1,
and so on.
In addition to modifying the Xkb keyboard mapping in xkb, XkbUp-
dateMapFromCore backfills the changes structure whose address is passed
in changes to indicate the modifications that were made. You may then
use changes in subsequent calls such as XkbSetMap, to propagate the lo-
cal modifications to a server.
SEE ALSO
XkbSetMap(3)
X Version 11 libX11 1.8.12 XkbUpdateMapFromCore(3)
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