1XkbAllocClientMap(3)             XKB FUNCTIONS            XkbAllocClientMap(3)
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NAME

6       XkbAllocClientMap  -  Allocate  and  initialize  an  empty  client  map
7       description record
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SYNOPSIS

10       Status XkbAllocClientMap (XkbDescPtr xkb, unsigned int which,  unsigned
11              int type_count);
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ARGUMENTS

14       - xkb  keyboard description in which to allocate client map
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16       - which
17              mask selecting map components to allocate
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19       - type_count
20              value of num_types field in map to be allocated
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DESCRIPTION

23       Calling  XkbGetMap  should  be  sufficient for most applications to get
24       client and server maps. As a result, most applications do not  need  to
25       directly allocate client and server maps.
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27       If you change the number of key types or construct map components with‐
28       out loading the necessary components from the X server, do not allocate
29       any  map components directly using malloc or Xmalloc.  Instead, use the
30       Xkb allocators, XkbAllocClientMap, and XkbAllocServerMap.
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32       Similarly,   use   the   Xkb   destructors,    XkbFreeClientMap,    and
33       XkbFreeServerMap instead of free or Xfree.
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35       XkbAllocClientMap  allocates and initializes an empty client map in the
36       map field of the keyboard description  specified  by  xkb.   The  which
37       parameter  specifies the particular components of the client map struc‐
38       ture to allocate and is a mask composed by a bitwise  inclusive  OR  of
39       one or more of the masks shown in Table 1.
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41                      Table 1 XkbAllocClientMap Masks
42       ──────────────────────────────────────────────────────────────
43       Mask                 Effect
44       ──────────────────────────────────────────────────────────────
45       XkbKeyTypesMask      The  type_count field specifies the num‐
46                            ber of entries to  preallocate  for  the
47                            types  field  of  the client map. If the
48                            type_count field is less than  XkbNumRe‐
49                            quiredTypes returns BadValue.
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51       XkbKeySymsMask       The min_key_code and max_key_code fields
52                            of the xkb parameter are used  to  allo‐
53                            cate  the syms and key_sym_map fields of
54                            the client map. The fields are allocated
55                            to contain the maximum number of entries
56                            necessary     for     max_key_code     -
57                            min_key_code + 1 keys.
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59       XkbModifierMapMask   The min_key_code and max_key_code fields
60                            of the xkb parameter are used  to  allo‐
61                            cate the modmap field of the client map.
62                            The field is allocated  to  contain  the
63                            maximum  number of entries necessary for
64                            max_key_code - min_key_code + 1 keys.
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66       NOTE: The min_key_code and max_key_code fields  of  the  xkb  parameter
67       must  be legal values if the XkbKeySymsMask or XkbModifierMapMask masks
68       are set in the which  parameter.  If  they  are  not  valid,  XkbAlloc‐
69       ClientMap returns BadValue.
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71       If  the  client  map  of  the keyboard description is not NULL, and any
72       fields are already allocated in the client map, XkbAllocClientMap  does
73       not  overwrite  the existing values; it simply ignores that part of the
74       request. The only exception  is  the  types  array.  If  type_count  is
75       greater  than  the current num_types field of the client map, XkbAlloc‐
76       ClientMap resizes the  types  array  and  resets  the  num_types  field
77       accordingly.
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79       If  XkbAllocClientMap  is successful, it returns Success. Otherwise, it
80       can return either BadMatch, BadAlloc, or BadValue errors.
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DIAGNOSTICS

83       BadAlloc       Unable to allocate storage
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85       BadMatch       A compatible version of Xkb was  not  available  in  the
86                      server or an argument has correct type and range, but is
87                      otherwise invalid
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89       BadValue       An argument is out of range
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SEE ALSO

92       XkbAllocClientMap(3),    XkbAllocServerMap(3),    XkbFreeClientMap,(3),
93       XkbFreeServerMap(3), XkbGetMap(3)
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97X Version 11                     libX11 1.6.9             XkbAllocClientMap(3)
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