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XListFonts(3)                                  XLIB FUNCTIONS                                  XListFonts(3)



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

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 lower-case lowercase
       case 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 Char-acter Character
       acter 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 Dis-play, Display,
       play, then this function's behavior is undefined.

SEE ALSO
       XLoadFont(3X11), XSetFontPath(3X11)
       Xlib - C Language X Interface



X Version 11                                    libX11 1.2.1                                   XListFonts(3)