XkbAllocCompatMap(3)

NAME
XkbAllocCompatMap - Allocate a new compatibility map if you do not already have one available

SYNOPSIS

Status XkbAllocCompatMap (XkbDescPtr xkb, unsigned int which, unsigned int num_si);

ARGUMENTS

- xkb
    keyboard description in which to allocate compat map

- which
    mask of compatibility map components to allocate

- num_si
    number of symbol interpretations to allocate

DESCRIPTION

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.
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
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.

STRUCTURES

    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;

DIAGNOSTICS

BadAlloc
    Unable to allocate storage

BadMatch
    A compatible version of Xkb was not available in the server or an argument has correct type and range, but is otherwise invalid

SEE ALSO
XkbGetCompatMap(3)

NOTES

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.