XListFonts(3X11) XLIB FUNCTIONS XListFonts(3X11)NAME
XListFonts, XFreeFontNames, XListFontsWithInfo, XFree-
FontInfo - obtain or free font names and information
SYNTAX
char **XListFonts(display, pattern, maxnames,
actual_count_return)
Display *display;
char *pattern;
int maxnames;
int *actual_count_return;
XFreeFontNames(list)
char *list[];
char **XListFontsWithInfo(display, pattern, maxnames,
count_return, info_return)
Display *display;
char *pattern;
int maxnames;
int *count_return;
XFontStruct **info_return;
XFreeFontInfo(names, free_info, actual_count)
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.
X Version 11 Release 6.4 1
XListFonts(3X11) XLIB FUNCTIONS XListFonts(3X11)
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 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 imple-
mentation-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 associ-
ated 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 informa-
tion 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
X Version 11 Release 6.4 2
XListFonts(3X11) XLIB FUNCTIONS XListFonts(3X11)
font is not closed; use XUnloadFont to close the font.
SEE ALSOXLoadFont(3X11), XSetFontPath(3X11)
Xlib - C Language X Interface
X Version 11 Release 6.4 3