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.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1994, 1996 X Consortium
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.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991 by
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.\" Portions Copyright \(co 1990, 1991 by
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.\"
.ds xT X Toolkit Intrinsics \- C Language Interface
.ds xW Athena X Widgets \- C Language X Toolkit Interface
.ds xL Xlib \- C Language X Interface
.ds xC Inter-Client Communication Conventions Manual
.TH XListFonts __libmansuffix__ __xorgversion__ "XLIB FUNCTIONS"
.SH NAME
XListFonts, XFreeFontNames, XListFontsWithInfo, XFreeFontInfo \- obtain or free font names and information
.SH SYNTAX
.HP
char **XListFonts\^(\^Display *\^\fIdisplay\fP\^, _Xconst char *\^\fIpattern\fP\^, int
\fImaxnames\fP\^, int *\^\fIactual_count_return\fP\^);
.HP
int XFreeFontNames\^(\^char *\fIlist\fP\^[\^]\^);
.HP
char **XListFontsWithInfo\^(\^Display *\fIdisplay\fP\^, _Xconst char *\fIpattern\fP\^,
int \fImaxnames\fP\^, int *\fIcount_return\fP\^, XFontStruct
**\fIinfo_return\fP\^);
.HP
int XFreeFontInfo(\^char **\fInames\fP\^, XFontStruct *\fIfree_info\fP, int
\fIactual_count\fP\^);
.SH ARGUMENTS
.IP \fIactual_count\fP 1i
Specifies the actual number of font names.
.IP \fIactual_count_return\fP 1i
Returns the actual number of font names.
.IP \fIcount_return\fP 1i
Returns the actual number of matched font names.
.IP \fIdisplay\fP 1i
Specifies the connection to the X server.
.IP \fIinfo_return\fP 1i
Returns the font information.
.IP \fIfree_info\fP 1i
Specifies the font information.
.IP \fIlist\fP 1i
Specifies the array of strings you want to free.
.IP \fImaxnames\fP 1i
Specifies the maximum number of names to be returned.
.IP \fInames\fP 1i
Specifies the list of font names.
.IP \fIpattern\fP 1i
Specifies the null-terminated pattern string that can contain wildcard
characters.
.SH DESCRIPTION
The
.B XListFonts
function returns an array of available font names
(as controlled by the font search path; see
.BR 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 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,
.B XListFonts
returns NULL.
The client should call
.B XFreeFontNames
when finished with the result to free the memory.
.LP
The
.B XFreeFontNames
function frees the array and strings returned by
.B XListFonts
or
.BR XListFontsWithInfo .
.LP
The
.B 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
.B 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,
.B XListFontsWithInfo
returns NULL.
.LP
To free only the allocated name array,
the client should call
.BR XFreeFontNames .
To free both the name array and the font information array
or to free just the font information array,
the client should call
.BR XFreeFontInfo .
.LP
The
.B 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
.BR XLoadQueryFont )
is passed, the structure is freed,
but the font is not closed; use
.B XUnloadFont
to close the font.
.LP
Note that
.B XListFontsWithInfo
is not thread-safe.
If other threads make X requests on the same
.BR Display ,
then this function's behavior is undefined.
.SH "SEE ALSO"
XLoadFont(__libmansuffix__),
XSetFontPath(__libmansuffix__)
.br
\fI\*(xL\fP