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SuSE 11.3 - man page for xkbchangenames (suse section 3)

XkbChangeNames(3)						   XKB FUNCTIONS						 XkbChangeNames(3)

NAME
XkbChangeNames - _summary-line_
SYNOPSIS
Bool XkbChangeNames (Display *dpy, unsigned int which, XkbDescPtr Xkb);
ARGUMENTS
- dpy connection to the X server - which mask of names or map components to be updated - Xkb keyboard description to be updated
DESCRIPTION
XkbChangeNames provides a more flexible method for changing symbolic names than XkbSetNames and requires the use of an XkbNameChangesRec structure. XkbChangeNames copies any names specified by changes from the keyboard description, xkb, to the X server specified by dpy. XkbChangeNames aborts and returns False if any illegal type names or type shift level names are specified by changes. 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 XkbNameChangesRec structure and call XkbChangeNames to download the changes to the server. XkbSetNames and XkbChangeNames can generate BadAlloc, BadAtom, BadLength, BadMatch, and BadImplementation errors.
STRUCTURES
The XkbNameChangesRec allows applications to identify small modifications to the symbolic names and effectively reduces the amount of traf- fic 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
XkbSetNames(3) X Version 11 libX11 1.3.2 XkbChangeNames(3)

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