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XkbGetUpdatedMap(3) XKB FUNCTIONS XkbGetUpdatedMap(3)


XkbGetUpdatedMap - Update the client or server map information in an existing keyboard description


Status XkbGetUpdatedMap (Display *display, unsigned int which, XkbDescPtr xkb);


- display
connection to X server
- which
mask selecting subcomponents to populate
- xkb
keyboard description to be updated


The which parameter is a bitwise inclusive OR of the masks in Table 1. If the needed components of the xkb structure are not already allocated, XkbGetUpdatedMap allocates them. XkbGetUpdatedMap fetches the requested information for the device specified in the XkbDescRec passed in the xkb parameter.

Table 1 Xkb Mapping Component Masks
and Convenience Functions
Mask Value Map Fields Convenience
XkbKeyTypesMask (1<<0) client types size_types num_types XkbGetKeyTypes XkbResizeKeyType XkbCopyKeyType XkbCopyKeyTypes
XkbKeySymsMask (1<<1) client syms size_syms num_syms key_sym_map XkbGetKeySyms XkbResizeKeySyms XkbChangeTypesOfKey
XkbModifierMapMask (1<<2) client modmap XkbGetKeyModifierMap
XkbExplicitComponentsMask (1<<3) server explicit XkbGetKeyExplicitComponents
XkbKeyActionsMask (1<<4) server key_acts acts num_acts size_acts XkbGetKeyActions XkbResizeKeyActions
XkbKeyBehaviorsMask (1<<5) server behaviors XkbGetKeyBehaviors
XkbVirtualModsMask (1<<6) server vmods XkbGetVirtualMods
XkbVirtualModMapMask (1<<7) server vmodmap XkbGetVirtualModMap

XkbGetUpdatedMap is synchronous; it queries the server for the desired information, waits for a reply, and then returns. If successful, XkbGetUpdatedMap returns Success. If unsuccessful, XkbGetUpdatedMap returns one of the following: BadAlloc (unable to allocate a component in the XkbDescRec structure), BadValue (some mask bits in which are undefined), BadImplementation (a compatible version of the Xkb extension is not available in the server or the reply from the server was invalid).


The XkbGetUpdatedMap function returns Success if a reply is received to the server query for the desired information.


The complete description of an Xkb keyboard is given by an XkbDescRec. The component structures in the XkbDescRec represent the major Xkb components.

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 results. 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)


Unable to allocate storage
Invalid reply from server
An argument is out of range


XkbChangeTypesOfKey(3), XkbCopyKeyType(3), XkbCopyKeyTypes(3), XkbGetKeyActions(3), XkbGetKeyBehaviors(3), XkbGetKeyExplicitComponents(3), XkbGetKeyModifierMap(3), XkbGetKeySyms(3), XkbGetKeyTypes(3), XkbResizeKeyActions(3), XkbResizeKeySyms(3), XkbResizeKeyType(3), XkbGetVirtualModMap(3), XkbGetVirtualMods(3)
libX11 1.6.7 X Version 11