1XListFonts(3)                   XLIB FUNCTIONS                   XListFonts(3)
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NAME

6       XListFonts,  XFreeFontNames, XListFontsWithInfo, XFreeFontInfo - obtain
7       or free font names and information
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SYNTAX

10       char **XListFonts(Display *display, _Xconst  char  *pattern,  int  max‐
11              names, int *actual_count_return);
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13       int XFreeFontNames(char *list[]);
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15       char  **XListFontsWithInfo(Display *display, _Xconst char *pattern, int
16              maxnames, int *count_return, XFontStruct **info_return);
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18       int  XFreeFontInfo(char  **names,  XFontStruct  *free_info,   int   ac‐
19              tual_count);
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ARGUMENTS

22       actual_count
23                 Specifies the actual number of font names.
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26       actual_count_return
27                 Returns the actual number of font names.
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29       count_return
30                 Returns the actual number of matched font names.
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32       display   Specifies the connection to the X server.
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34       info_return
35                 Returns the font information.
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37       free_info Specifies the font information.
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40       list      Specifies the array of strings you want to free.
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42       maxnames  Specifies the maximum number of names to be returned.
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44       names     Specifies the list of font names.
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47       pattern   Specifies the null-terminated pattern string that can contain
48                 wildcard characters.
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DESCRIPTION

51       The XListFonts function returns an array of available  font  names  (as
52       controlled  by  the  font search path; see XSetFontPath) that match the
53       string you passed to the pattern argument.  The pattern string can con‐
54       tain any characters, but each asterisk (*) is a wildcard for any number
55       of characters, and each question mark (?) is a wildcard  for  a  single
56       character.  If the pattern string is not in the Host Portable Character
57       Encoding, the result is implementation-dependent.  Use of uppercase  or
58       lowercase  does  not  matter.  Each returned string is null-terminated.
59       If the data returned by the server is in the Latin  Portable  Character
60       Encoding,  then the returned strings are in the Host Portable Character
61       Encoding.  Otherwise, the result is implementation-dependent.  If there
62       are no matching font names, XListFonts returns NULL.  The client should
63       call XFreeFontNames when finished with the result to free the memory.
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65       The XFreeFontNames function frees the array  and  strings  returned  by
66       XListFonts or XListFontsWithInfo.
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68       The XListFontsWithInfo function returns a list of font names that match
69       the specified pattern and their associated font information.  The  list
70       of names is limited to size specified by maxnames.  The information re‐
71       turned for each font is identical to what XLoadQueryFont  would  return
72       except  that  the  per-character metrics are not returned.  The pattern
73       string can contain any characters, but each asterisk (*) is a  wildcard
74       for  any number of characters, and each question mark (?) is a wildcard
75       for a single character.  If the pattern string is not in the Host  Por‐
76       table  Character Encoding, the result is implementation-dependent.  Use
77       of uppercase or lowercase does not matter.   Each  returned  string  is
78       null-terminated.   If  the  data returned by the server is in the Latin
79       Portable Character Encoding, then the returned strings are in the  Host
80       Portable  Character Encoding.  Otherwise, the result is implementation-
81       dependent.  If there are no matching font names, XListFontsWithInfo re‐
82       turns NULL.
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84       To  free  only  the allocated name array, the client should call XFree‐
85       FontNames.  To free both the name array and the font information  array
86       or  to  free  just  the  font information array, the client should call
87       XFreeFontInfo.
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89       The XFreeFontInfo function frees a font structure or an array  of  font
90       structures  and  optionally  an array of font names.  If NULL is passed
91       for names, no font names are freed.  If a font structure  for  an  open
92       font  (returned  by  XLoadQueryFont) is passed, the structure is freed,
93       but the font is not closed; use XUnloadFont to close the font.
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95       Note that XListFontsWithInfo is not thread-safe.  If other threads make
96       X  requests on the same Display, then this function's behavior is unde‐
97       fined.
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SEE ALSO

100       XLoadFont(3), XSetFontPath(3)
101       Xlib - C Language X Interface
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105X Version 11                     libX11 1.8.1                    XListFonts(3)
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