XkbSetCompatMap(3) XKB FUNCTIONS XkbSetCompatMap(3)
NAME
XkbSetCompatMap - Modify the server's compatibility map
SYNOPSIS
Bool XkbSetCompatMap (Display *display, unsigned int which, XkbDescPtr
xkb, Bool update_actions);
ARGUMENTS
display
connection to server
which mask of compat map components to set
xkb source for compat map components
update_actions
True => apply to server's keyboard map
DESCRIPTION
To modify the server's compatibility map, first modify a local copy of
the Xkb compatibility map, then call XkbSetCompatMap. You may allocate
a new compatibility map for this purpose using XkbAllocCompatMap. You
may also use a compatibility map from another server, although you need
to adjust the device_spec field in the XkbDescRec accordingly. Note
that symbol interpretations in a compatibility map ( sym_interpret, the
vector of XkbSymInterpretRec structures) are also allocated using this
same function. XkbSetCompatMap copies compatibility map information
from the keyboard description in xkb to the server specified in dis-
play's compatibility map for the device specified by the device_spec
field of xkb. Unless you have specifically modified this field, it is
the default keyboard device. which specifies the compatibility map
components to be set, and is an inclusive OR of the bits shown in Table
1.
Table 1 Compatibility Map Component Masks
───────────────────────────────────────────────────────────────
Mask Value Affecting
───────────────────────────────────────────────────────────────
XkbSymInterpMask (1<<0) Symbol interpretations
XkbGroupCompatMask (1<<1) Group maps
XkbAllCompatMask (0x3) All compatibility map components
After updating its compatibility map for the specified device, if up-
date_actions is True, the server applies the new compatibility map to
its entire keyboard for the device to generate a new set of key seman-
tics, compatibility state, and a new core keyboard map. If update_ac-
tions is False, the new compatibility map is not used to generate any
modifications to the current device semantics, state, or core keyboard
map. One reason for not applying the compatibility map immediately
would be if one server was being configured to match another on a
piecemeal basis; the map should not be applied until everything is up-
dated. To force an update at a later time, use XkbSetCompatMap specify-
ing which as zero and update_actions as True. XkbSetCompatMap returns
True if successful and False if unsuccessful. The server may report
problems it encounters when processing the request subsequently via
protocol errors.
RETURN VALUES
True The XkbSetCompatMap function returns True if successful.
False The XkbSetCompatMap function returns False if unsuccess-
ful.
STRUCTURES
The complete description of an Xkb keyboard is given by an XkbDescRec.
The component structures in the XkbDescRec represent the major Xkb com-
ponents.
typedef struct {
struct _XDisplay *display; /* connection to X server */
unsigned short flags; /* private to Xkb, do not modify */
unsigned short device_spec; /* device of interest */
KeyCode min_key_code; /* minimum keycode for device */
KeyCode max_key_code; /* maximum keycode for device */
XkbControlsPtr ctrls; /* controls */
XkbServerMapPtr server; /* server keymap */
XkbClientMapPtr map; /* client keymap */
XkbIndicatorPtr indicators; /* indicator map */
XkbNamesPtr names; /* names for all components */
XkbCompatMapPtr compat; /* compatibility map */
XkbGeometryPtr geom; /* physical geometry of keyboard */
} XkbDescRec, *XkbDescPtr;
The display field points to an X display structure. The flags field is
private to the library: modifying flags may yield unpredictable re-
sults. The device_spec field specifies the device identifier of the
keyboard input device, or XkbUseCoreKeyboard, which specifies the core
keyboard device. The min_key_code and max_key_code fields specify the
least and greatest keycode that can be returned by the keyboard.
Each structure component has a corresponding mask bit that is used in
function calls to indicate that the structure should be manipulated in
some manner, such as allocating it or freeing it. These masks and their
relationships to the fields in the XkbDescRec are shown in Table 2.
Table 2 Mask Bits for XkbDescRec
──────────────────────────────────────────────────
Mask Bit XkbDescRec Field Value
──────────────────────────────────────────────────
XkbControlsMask ctrls (1L<<0)
XkbServerMapMask server (1L<<1)
XkbIClientMapMask map (1L<<2)
XkbIndicatorMapMask indicators (1L<<3)
XkbNamesMask names (1L<<4)
XkbCompatMapMask compat (1L<<5)
XkbGeometryMask geom (1L<<6)
XkbAllComponentsMask All Fields (0x7f)
The XkbSymInterpretRec structure specifies a symbol interpretation:
typedef struct {
KeySym sym; /* keysym of interest or NULL */
unsigned char flags; /* XkbSI_AutoRepeat, XkbSI_LockingKey */
unsigned char match; /* specifies how mods is interpreted */
unsigned char mods; /* modifier bits, correspond to eight real modifiers */
unsigned char virtual_mod; /* 1 modifier to add to key virtual mod map */
XkbAnyAction act; /* action to bind to symbol position on key */
} XkbSymInterpretRec,*XkbSymInterpretPtr;
SEE ALSO
XkbAllocCompatMap(3)
X Version 11 libX11 1.8.4 XkbSetCompatMap(3)
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