NAME¶
XkbGetKeyExplicitComponents - Obtain the explicit components (the explicit
array) for a subset of the keys in a keyboard description
SYNOPSIS¶
Status XkbGetKeyExplicitComponents (Display
*dpy, unsigned int first, unsigned
int num, XkbDescPtr xkb);
ARGUMENTS¶
- - dpy
- connection to server
- - first
- keycode of first key to fetch
- - num
- number of keys for which to get explicit info
- - xkb
- Xkb description in which to put results
DESCRIPTION¶
Whenever a client remaps the keyboard using core protocol requests, Xkb examines
the map to determine likely default values for the components that cannot be
specified using the core protocol (see Core Keyboard Mapping to Xkb Keyboard
Mapping Transformation for more information on how Xkb chooses the default
values).
DO THE FOUR PAGES OF "CORE KEYBOARD MAPPING TO XKB KEYBOARD MAPPING
TRANSFORMATION" NEED TO BE ADDED HERE?
This automatic remapping might replace definitions explicitly requested by an
application, so the Xkb keyboard description defines an explicit components
mask for each key. Any aspects of the automatic remapping listed in the
explicit components mask for a key are not changed by the automatic keyboard
mapping.
The explicit components masks are held in the
explicit field of the
server map, which is an array indexed by keycode. Each entry in this array is
a mask that is a bitwise inclusive OR of the values shown in Table 1.
| Table 1 Explicit Component Masks |
|
|
|
| Bit in Explicit Mask |
Value |
Protects Against |
|
| ExplicitKeyType1 |
(1<<0) |
Automatic determination of the key type associated with Group1. |
| ExplicitKeyType2 |
(1<<1) |
Automatic determination of the key type associated with Group2. |
| ExplicitKeyType3 |
(1<<2) |
Automatic determination of the key type associated with Group3. |
| ExplicitKeyType4 |
(1<<3) |
Automatic determination of the key type associated with Group4. |
| ExplicitInterpret |
(1<<4) |
Application of any of the fields of a symbol interpretation to the key
in question. |
| ExplicitAutoRepeat |
(1<<5) |
Automatic determination of auto-repeat status for the key, as specified
in a symbol interpretation. |
| ExplicitBehavior |
(1<<6) |
Automatic assignment of the XkbKB_Lock behavior to the key, if the
XkbSI_LockingKey flag is set in a symbol interpretation. |
| ExplicitVModMap |
(1<<7) |
Automatic determination of the virtual modifier map for the key based on
the actions assigned to the key and the symbol interpretations that match
the key. |
XkbGetKeyExplicitComponents sends a request to the server to obtain the
explicit components for
num keys on the keyboard starting with key
first. It waits for a reply and returns the explicit components in the
server->explicit array of
xkb. If successful,
XkbGetKeyExplicitComponents returns Success. The
xkb parameter
must be a pointer to a valid Xkb keyboard description.
If the
server map in the
xkb parameter has not been allocated,
XkbGetKeyExplicitComponents allocates and initializes it before
obtaining the actions.
If the server does not have a compatible version of Xkb, or the Xkb extension
has not been properly initialized,
XkbGetKeyExplicitComponents returns
BadMatch. If
num is less than 1 or greater than XkbMaxKeyCount,
XkbGetKeyExplicitComponents returns BadValue. If any allocation errors
occur,
XkbGetKeyExplicitComponents returns BadAlloc.
DIAGNOSTICS¶
- BadAlloc
- Unable to allocate storage
- BadMatch
- A compatible version of Xkb was not available in the server or an argument
has correct type and range, but is otherwise invalid
- BadValue
- An argument is out of range
