XkbSetNames(3)

NAME
XkbSetNames - Change the symbolic names in the server

SYNOPSIS
Bool XkbSetNames ( dpy, which, first_type, num_types , xkb )
      Display * dpy;
      unsigned int which;
      unsigned int first_type;
      unsigned int num_types;
      XkbDescPtr xkb;

ARGUMENTS

- dpy
    connection to the X server

- which
    mask of names or map components to be changed

- first_type
    first type whose name is to be changed

- num_types
    number of types for which names are to be changed

- xkb
    keyboard description from which names are to be taken

DESCRIPTION

To change the symbolic names in the server, first modify a local copy of the keyboard description and then use either XkbSetNames, or, to save network traffic, use a XkbNameChangesRecstructure and call XkbChangeNames to download the changes to the server. XkbSetNames and XkbChangeNames can generate BadAlloc, BadAtom, BadLength, BadMatch, and BadImplementation errors.

Use XkbSetNames to change many names at the same time. For each bit set in which, XkbSetNames takes the corresponding value (or values in the case of arrays) from the keyboard description xkb and sends it to the server.

The first_type and num_types arguments are used only if XkbKeyTypeNamesMask or XkbKTLevelNamesMask is set in which and specify a subset of the types for which the corresponding names are to be changed. If either or both of these mask bits are set but the specified types are illegal, XkbSetNames returns False and does not update any of the names specified in which. The specified types are illegal if xkb does not include a map component or if first_type and num_types specify types that are not defined in the keyboard description.

STRUCTURES

The XkbNameChangesRec allows applications to identify small modifications to the symbolic names and effectively reduces the amount of traffic sent to the server:

    typedef struct _XkbNameChanges {
        unsigned int   changed;          /* name components that have changed */
        unsigned char  first_type;       /* first key type with a new name */
        unsigned char  num_types;        /* number of types with new names */
        unsigned char  first_lvl;        /* first key type with new level names
*/
        unsigned char  num_lvls;         /* number of key types with new level
names */
        unsigned char  num_aliases;      /* if key aliases changed, total number
of key aliases */
        unsigned char  num_rg;           /* if radio groups changed, total
number of radio groups */
        unsigned char  first_key;        /* first key with a new name */
        unsigned char  num_keys;         /* number of keys with new names */
        unsigned short changed_vmods;    /* mask of virtual modifiers for which
names have changed */
        unsigned long  changed_indicators; /* mask of indicators for which names
were changed */
        unsigned char  changed_groups;     /* mask of groups for which names
were changed */
    } XkbNameChangesRec, *XkbNameChangesPtr

The changed field specifies the name components that have changed and is the bitwise inclusive OR of the valid names mask bits defined in Table 1. The rest of the fields in the structure specify the ranges that have changed for the various kinds of symbolic names, as shown in Table 2.

Xkb provides several functions that work with symbolic names. Each of these functions uses a mask to specify individual fields of the structures described above. These masks and their relationships to the fields in a keyboard description are shown in Table 1.

Table 1 Symbolic Names Masks
Mask Bit | Value | Keyboard | Field
 |  | Component
XkbKeycodesNameMask | (1<<0) | Xkb->names | keycodes
XkbGeometryNameMask | (1<<1) | Xkb->names | geometry
XkbSymbolsNameMask | (1<<2) | Xkb->names | symbols
XkbPhysSymbolsNameMask | (1<<3) | Xkb->names | phys_symbols
XkbTypesNameMask | (1<<4) | Xkb->names | type
XkbCompatNameMask | (1<<5) | Xkb->names | compat
XkbKeyTypeNamesMask | (1<<6) | Xkb->map | type[*].name
XkbKTLevelNamesMask | (1<<7) | Xkb->map | type[*].lvl_names[*]
XkbIndicatorNamesMask | (1<<8) | Xkb->names | indicators[*]
XkbKeyNamesMask | (1<<9) | Xkb->names | keys[*], num_keys
XkbKeyAliasesMask | (1<<10) | Xkb->names | key_aliases[*], num_key_aliases
XkbVirtualModNamesMask | (1<<11) | Xkb->names | vmods[*]
XkbGroupNamesMask | (1<<12) | Xkb->names | groups[*]
XkbRGNamesMask | (1<<13) | Xkb->names | radio_groups[*], num_rg
XkbComponentNamesMask | (0x3f) | Xkb->names | keycodes,
 |  |  | geometry,
 |  |  | symbols,
 |  |  | physical symbols,
 |  |  | types, and
 |  |  | compatibility map
XkbAllNamesMask | (0x3fff) | Xkb->names | all name components

Table 2 XkbNameChanges Fields
Mask | Fields | Component | Field
XkbKeyTypeNamesMask | first_type, | Xkb->map | type[*].name
 | num_types
XkbKTLevelNamesMask | first_lvl, | Xkb->map | type[*].lvl_names[*]
 | num_lvls
XkbKeyAliasesMask | num_aliases | Xkb->names | key_aliases[*]
XkbRGNamesMask | num_rg | Xkb->names | radio_groups[*]
XkbKeyNamesMask | first_key, | Xkb->names | keys[*]
 | num_keys
XkbVirtualModNamesMask | changed_vmods | Xkb->names | vmods[*]
XkbIndicatorNamesMask | changed_indicators | Xkb->names | indicators[*]
XkbGroupNamesMask | changed_groups | Xkb->names | groups[*]

DIAGNOSTICS

BadAlloc
    Unable to allocate storage

BadAtom
    A name is neither a valid Atom or None

BadImplementation
    Invalid reply from server

BadLength
    The length of a request is shorter or longer than that required to minimally contain the arguments

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
XkbChangeNames(3)