1XInternAtom(3)                  XLIB FUNCTIONS                  XInternAtom(3)
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NAME

6       XInternAtom,  XInternAtoms, XGetAtomName, XGetAtomNames - create or re‐
7       turn atom names
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SYNTAX

10       Atom  XInternAtom(Display  *display,  _Xconst  char  *atom_name,   Bool
11              only_if_exists);
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13       Status  XInternAtoms(Display  *display,  char  **names, int count, Bool
14              only_if_exists, Atom *atoms_return);
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16       char *XGetAtomName(Display *display, Atom atom);
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18       Status XGetAtomNames(Display *display, Atom  *atoms,  int  count,  char
19              **names_return);
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ARGUMENTS

22       atom      Specifies the atom for the property name you want returned.
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24       atoms     Specifies the array of atoms.
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26       atom_name Specifies  the  name  associated  with  the atom you want re‐
27                 turned.
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29       atoms_return
30                 Returns the atoms.
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32       count     Specifies the number of atom names in the array.
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34       display   Specifies the connection to the X server.
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36       names     Specifies the array of atom names.
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38       names_return
39                 Returns the atom names.
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41       only_if_exists
42                 Specifies a Boolean value that  indicates  whether  the  atom
43                 must be created.
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DESCRIPTION

46       The  XInternAtom  function  returns the atom identifier associated with
47       the specified atom_name string.  If only_if_exists is False,  the  atom
48       is  created  if  it  does not exist.  Therefore, XInternAtom can return
49       None.  If the atom name is not in the Host Portable Character Encoding,
50       the  result  is implementation-dependent.  Uppercase and lowercase mat‐
51       ter; the strings “thing”, “Thing”, and “thinG” all designate  different
52       atoms.  The atom will remain defined even after the client's connection
53       closes.  It will become undefined only when the last connection to  the
54       X server closes.
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56       XInternAtom can generate BadAlloc and BadValue errors.
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58       The  XInternAtoms function returns the atom identifiers associated with
59       the specified names.  The atoms are stored in  the  atoms_return  array
60       supplied by the caller.  Calling this function is equivalent to calling
61       XInternAtom for each of the names in turn with the specified  value  of
62       only_if_exists,  but  this  function minimizes the number of round-trip
63       protocol exchanges between the client and the X server.
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65       This function returns a nonzero status if atoms are returned for all of
66       the names; otherwise, it returns zero.
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68       XInternAtoms can generate BadAlloc and BadValue errors.
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70       The  XGetAtomName  function returns the name associated with the speci‐
71       fied atom.  If the data returned by the server is in the Latin Portable
72       Character  Encoding,  then  the returned string is in the Host Portable
73       Character Encoding.  Otherwise, the result is implementation-dependent.
74       To free the resulting string, call XFree.
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76       XGetAtomName can generate a BadAtom error.
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78       The XGetAtomNames function returns the names associated with the speci‐
79       fied atoms.  The names are stored in the names_return array supplied by
80       the  caller.   Calling this function is equivalent to calling XGetAtom‐
81       Name for each of the atoms in turn, but  this  function  minimizes  the
82       number  of  round-trip  protocol exchanges between the client and the X
83       server.
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85       This function returns a nonzero status if names are returned for all of
86       the atoms; otherwise, it returns zero.
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88       XGetAtomNames can generate a BadAtom error.
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DIAGNOSTICS

91       BadAlloc  The  server  failed  to  allocate  the  requested resource or
92                 server memory.
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94       BadAtom   A value for an Atom argument does not name a defined Atom.
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96       BadValue  Some numeric value falls outside the range of values accepted
97                 by  the request.  Unless a specific range is specified for an
98                 argument, the full range defined by the  argument's  type  is
99                 accepted.   Any argument defined as a set of alternatives can
100                 generate this error.
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SEE ALSO

103       XFree(3), XGetWindowProperty(3)
104       Xlib - C Language X Interface
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108X Version 11                     libX11 1.8.1                   XInternAtom(3)
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