XListFonts(3X11) XLIB FUNCTIONS XListFonts(3X11)
NAME
XListFonts, XFreeFontNames, XListFontsWithInfo, XFreeFon-
tInfo - obtain or free font names and information
SYNTAX
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 XSet-
FontPath) that match the string you passed to the pattern
argument. The pattern string can contain any characters, but
XFree86 Version 4.5.0 1
XListFonts(3X11) XLIB FUNCTIONS XListFonts(3X11)
each asterisk (*) is a wildcard for any number of charac-
ters, 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 Encod-
ing. 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 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 XLoad-
QueryFont) is passed, the structure is freed, but the font
is not closed; use XUnloadFont to close the font.
SEE ALSO
XLoadFont(3X11), XSetFontPath(3X11)
Xlib - C Language X Interface
XFree86 Version 4.5.0 2