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Index for Section 3X11 |
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Alphabetical listing for X |
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XListFonts(3X11)
X11R6
NAME
XListFonts, XFreeFontNames, XListFontsWithInfo, XFreeFontInfo - obtain or
free font names and information
SYNOPSIS
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.
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 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, 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 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 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.
SEE ALSO
XLoadFont(3X11), XSetFontPath(3X11)
Xlib -- C Language X Interface
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Index for Section 3X11 |
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Alphabetical listing for X |
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Top of page |
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