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XListFonts(3) XLIB FUNCTIONS XListFonts(3)
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 charac-
ters.
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 argu-
ment. 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 char-
acter. 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 XList-
FontsWithInfo.
The XListFontsWithInfo function returns a list of font names that match the specified pat-
tern and their associated font information. The list of names is limited to size speci-
fied by maxnames. The information returned for each font is identical to what XLoadQuery-
Font 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 Encod-
ing, then the returned strings are in the Host Portable Character Encoding. Otherwise,
the result is implementation-dependent. If there are no matching font names, XList-
FontsWithInfo 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
X Version 11 libX11 1.6.7 XListFonts(3)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache
Under GNU General Public License
2024-04-18 15:25 @52.14.221.113 CrawledBy claudebot