NAME
XkbFreeCompatMap - Free an entire compatibility map or selected
portions of one
SYNOPSIS
void XkbFreeCompatMap (XkbDescPtr xkb, unsigned int which, Bool
free_map);
ARGUMENTS
- xkb Xkb description in which to free compatibility map
- which
mask of compatibility map components to free
- free_map
True => free XkbCompatMap structure itself
DESCRIPTION
which specifies the compatibility map components to be freed (see
XkbGetCompatMap). which 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
free_map indicates whether the XkbCompatMap structure itself should be
freed. If free_map is True, which is ignored, all non-NULL
compatibility map components are freed, and the compat field in the
XkbDescRec referenced by xkb is set to NULL.
STRUCTURES
typedef struct _XkbCompatMapRec {
XkbSymInterpretPtr sym_interpret; /∗ symbol based key semantics*/
XkbModsRec groups[XkbNumKbdGroups]; /∗ group => modifier map */
unsigned short num_si; /∗ # structures used in sym_interpret */
unsigned short size_si; /∗ # structures allocated in sym_interpret */
} XkbCompatMapRec, *XkbCompatMapPtr;
The complete description of an Xkb keyboard is given by an XkbDescRec.
The component structures in the XkbDescRec represent the major Xkb
components outlined in Figure 1.1.
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. The
other fields specify structure components of the keyboard description
and are described in detail in other sections of this document. Table 2
identifies the subsequent sections of this document that discuss the
individual components of the XkbDescRec.
Table 2 XkbDescRec Component References
----------------------------------------
XkbDescRec Field For more info
----------------------------------------
ctrls Chapter 10
server Chapter 16
map Chapter 15
indicators Chapter 8
names Chapter 18
compat Chapter 17
geom Chapter 13
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 3.
Table 3 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)
SEE ALSO
XkbGetCompatMap(3)