NAME

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

SYNTAX

       char  **XListFonts(Display  *display,   _Xconst   char   *pattern,   int   maxnames,   int
              *actual_count_return);

       int XFreeFontNames(char *list[]);

       char  **XListFontsWithInfo(Display  *display,  _Xconst  char  *pattern,  int maxnames, int
              *count_return, XFontStruct **info_return);

       int XFreeFontInfo(char **names, XFontStruct *free_info, int actual_count);

ARGUMENTS

       actual_count
                 Specifies the actual number of font names.

       actual_count_return
                 Returns the actual number of font names.

       count_return
                 Returns the actual number of matched font names.

       display   Specifies the connection to the X server.

       info_return
                 Returns the font information.

       free_info Specifies the font information.

       list      Specifies the array of strings you want to free.

       maxnames  Specifies the maximum number of names to be returned.

       names     Specifies the list of font names.

       pattern   Specifies  the  null-terminated  pattern  string  that  can   contain   wildcard
                 characters.

DESCRIPTION

       The  XListFonts  function  returns  an array of available font names (as controlled by the
       font search path; see XSetFontPath) that match  the  string  you  passed  to  the  pattern
       argument.   The  pattern  string  can  contain  any characters, but each asterisk (*) is a
       wildcard for any number of characters, and each question mark (?)  is  a  wildcard  for  a
       single  character.   If the pattern string is not in the Host Portable Character Encoding,
       the result is implementation-dependent.  Use of uppercase or lowercase  does  not  matter.
       Each  returned  string  is  null-terminated.  If the data returned by the server is in the
       Latin Portable Character Encoding, then the returned strings  are  in  the  Host  Portable
       Character  Encoding.   Otherwise, the result is implementation-dependent.  If there are no
       matching font names, XListFonts returns NULL.  The client should call XFreeFontNames  when
       finished with the result to free the memory.

       The  XFreeFontNames  function  frees  the  array  and  strings  returned  by XListFonts or
       XListFontsWithInfo.

       The XListFontsWithInfo function returns a list of font  names  that  match  the  specified
       pattern  and  their  associated  font  information.   The list of names is limited to size
       specified by maxnames.  The information returned  for  each  font  is  identical  to  what
       XLoadQueryFont  would  return except that the per-character metrics are not returned.  The
       pattern string can contain any characters, but each asterisk (*) is  a  wildcard  for  any
       number of characters, and each question mark (?) is a wildcard for a single character.  If
       the pattern string is  not  in  the  Host  Portable  Character  Encoding,  the  result  is
       implementation-dependent.   Use  of uppercase or lowercase does not matter.  Each returned
       string is null-terminated.  If the data returned by the server is in  the  Latin  Portable
       Character Encoding, then the returned strings are in the Host Portable Character Encoding.
       Otherwise, the result is implementation-dependent.  If there are no matching  font  names,
       XListFontsWithInfo returns NULL.

       To  free  only  the  allocated name array, the client should call XFreeFontNames.  To free
       both the name array and the font information array or to free just  the  font  information
       array, the client should call XFreeFontInfo.

       The  XFreeFontInfo  function  frees  a  font  structure or an array of font structures and
       optionally an array of font names.  If NULL is passed for names, no font names are  freed.
       If a font structure for an open font (returned by XLoadQueryFont) is passed, the structure
       is freed, but the font is not closed; use XUnloadFont to close the font.

       Note that XListFontsWithInfo is not thread-safe.  If other threads make X requests on  the
       same Display, then this function's behavior is undefined.

SEE ALSO

       XLoadFont(3), XSetFontPath(3)
       Xlib - C Language X Interface