XkbAllocCompatMap − Allocate a new compatibility map if you do not already have one available
(XkbDescPtr xkb, unsigned int which, unsigned
keyboard description in which to allocate compat map
mask of compatibility map components to allocate
number of symbol interpretations to allocate
xkb specifies the keyboard description for which compatibility maps are to be allocated. The compatibility map is the compat field in this structure.
which specifies the compatibility map components to be allocated (see XkbGetCompatMap). which is an inclusive OR of the bits shown in Table 1.
num_si specifies the total number of entries to allocate in the symbol interpretation vector (xkb.compat.sym_interpret).
XkbAllocCompatMap returns Success if successful, BadMatch if xkb is NULL, or BadAlloc if errors are encountered when attempting to allocate storage.
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 */
Unable to allocate storage
A compatible version of Xkb was not available in the server or an argument has correct type and range, but is otherwise invalid
Note that symbol interpretations in a compatibility map (the sym_interpret vector of XkbSymInterpretRec structures) are also allocated using this same function. To ensure that there is sufficient space in the symbol interpretation vector for entries to be added, use XkbAllocCompatMap specifying which as XkbSymInterpretMask and the number of free symbol interpretations needed in num_si.
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