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