XkbGetNamedGeometry(3)
NAME
XkbGetNamedGeometry - Loads a keyboard geometry description from this database by name
SYNOPSIS
Status XkbGetNamedGeometry (Display *dpy, XkbDescPtr xkb, Atom name);
ARGUMENTS
- dpy connection to the X server - xkb keyboard description into which the geometry should be loaded - name name of the geometry to be loaded
DESCRIPTION
It is also possible to load a keyboard geometry by name. The X server
maintains a database of keyboard components (see below).
XkbGetNamedGeometry can return BadName if the name cannot be found.
The X server maintains a database of keyboard components, identified by
component type. The database contains all the information necessary to
build a complete keyboard description for a particular device, as well
as to assemble partial descriptions. Table 1 identifies the component
types and the type of information they contain.
Table 1 Server Database Keyboard Components
Component Component Primary Contents May also contain
Type
Keymap Complete keyboard
description
Normally assembled using a
complete component from
each of the other types
Keycodes Symbolic name for each key Aliases for some
Minimum and maximum legal keys
keycodes Symbolic names for
indicators
Description of
indicators
physically present
Types Key types Real modifier
bindings and
symbolic names for
some virtual
modifiers
Compatibility Rules used to assign Maps for some
actions to keysyms indicators
Real modifier
bindings and
symbolic names for
some virtual
modifiers
Symbols Symbol mapping for Explicit actions and
keyboard keys behaviors for some
Modifier mapping keys
Symbolic names for groups Real modifier
bindings and
symbolic names for
some virtual
modifiers
Geometry Layout of the keyboard Aliases for some
keys; overrides
keycodes component
aliases
Symbolic names for
some indicators
Description of
indicators
physically present
While a keymap is a database entry for a complete keyboard description,
and therefore logically different from the individual component
database entries, the rules for processing keymap entries are identical
to those for the individual components. In the discussion that
follows, the term component is used to refer to either individual
components or a keymap.
There may be multiple entries for each of the component types. An entry
may be either complete or partial. Partial entries describe only a
piece of the corresponding keyboard component and are designed to be
combined with other entries of the same type to form a complete entry.
For example, a partial symbols map might describe the differences
between a common ASCII keyboard and some national layout. Such a
partial map is not useful on its own because it does not include those
symbols that are the same on both the ASCII and national layouts (such
as function keys). On the other hand, this partial map can be used to
configure any ASCII keyboard to use a national layout.
When a keyboard description is built, the components are processed in
the order in which they appear in Table 1; later definitions override
earlier ones.
DIAGNOSTICS
BadName A font or color of the specified name does not exist.
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