NAME

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

SYNTAX

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

       int XFreeFontNames(char *list[]);

       char **XListFontsWithInfo(Display *display, 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