XkbSetCompatMap - Online Linux Manual PageSection : 3
Updated : libX11 1.8.4
Source : X Version 11
Note : XKB FUNCTIONS
NAMEXkbSetCompatMap − Modify the server's compatibility map
SYNOPSISBool XkbSetCompatMap ( Display *display , unsigned int which , XkbDescPtr xkb , Bool update_actions );
ARGUMENTSdisplay 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
DESCRIPTIONTo 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 display'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 MaskValueAffecting 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 update_actions is True, the server applies the new compatibility map to its entire keyboard for the device to generate a new set of key semantics, compatibility state, and a new core keyboard map. If update_actions 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 updated. To force an update at a later time, use XkbSetCompatMap specifying 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 VALUESTrue The XkbSetCompatMap function returns True if successful. False The XkbSetCompatMap function returns False if unsuccessful.
STRUCTURESThe 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 BitXkbDescRec FieldValue XkbControlsMaskctrls(1L<<0) XkbServerMapMaskserver(1L<<1) XkbIClientMapMaskmap(1L<<2) XkbIndicatorMapMaskindicators(1L<<3) XkbNamesMasknames(1L<<4) XkbCompatMapMaskcompat(1L<<5) XkbGeometryMaskgeom(1L<<6) XkbAllComponentsMaskAll 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;
.EN
SEE ALSO
XkbAllocCompatMap(3) 0
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