Manual Pages for UNIX Operating System command usage for man XListFonts

XLIB FUNCTIONS                                   XListFonts(3x11)



NAME
     XListFonts, XFreeFontNames, XListFontsWithInfo, XFreeFon-
     tInfo - obtain or free font names and information

SYNTAX
     cc [ flag... ] file... -lX11 [ library... ]

     char **XListFonts(Display *display, char *pattern, int max-
          names, 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



X Version 11        Last change: libX11 1.3.5                   1






XLIB FUNCTIONS                                   XListFonts(3x11)



     XSetFontPath) that match the string you passed to the pat-
     tern argument.  The pattern string can contain any charac-
     ters, 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 pat-
     tern 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 match-
     ing 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.



X Version 11        Last change: libX11 1.3.5                   2






XLIB FUNCTIONS                                   XListFonts(3x11)



SEE ALSO
     XLoadFont(3x11), XSetFontPath(3x11)
     Xlib - C Language X Interface


ATTRIBUTES
     See attributes(5) for descriptions of the following attri-
     butes:

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Availability                | x11/library/libx11          |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|
    | MT-Level                    | See XInitThreads(3X11)      |
    |_____________________________|_____________________________|





































X Version 11        Last change: libX11 1.3.5                   3