XFontsOfFontSet(3X11) XLIB FUNCTIONS XFontsOfFontSet(3X11)NAME
XFontsOfFontSet, XBaseFontNameListOfFontSet, XLocaleOf-
FontSet, XContextDependentDrawing, XContextualDrawing,
XDirectionalDependentDrawing - obtain fontset information
SYNTAX
int XFontsOfFontSet(font_set, font_struct_list_return,
font_name_list_return)
XFontSet font_set;
XFontStruct ***font_struct_list_return;
char ***font_name_list_return;
char *XBaseFontNameListOfFontSet(font_set)
XFontSet font_set;
char *XLocaleOfFontSet(font_set)
XFontSet font_set;
Bool XContextDependentDrawing(font_set)
XFontSet font_set;
Bool XContextualDrawing(font_set)
XFontSet font_set;
Bool XDirectionalDependentDrawing(font_set)
XFontSet font_set;
ARGUMENTS
font_set Specifies the font set.
font_name_list_return
Returns the list of font names.
font_struct_list_return
Returns the list of font structs.
DESCRIPTION
The XFontsOfFontSet function returns a list of one or more
XFontStructs and font names for the fonts used by the Xmb
and Xwc layers for the given font set. A list of pointers
to the XFontStruct structures is returned to
font_struct_list_return. A list of pointers to null-ter-
minated, fully specified font name strings in the locale
of the font set is returned to font_name_list_return. The
font_name_list order corresponds to the font_struct_list
order. The number of XFontStruct structures and font
names is returned as the value of the function.
Because it is not guaranteed that a given character will
be imaged using a single font glyph, there is no provision
for mapping a character or default string to the font
properties, font ID, or direction hint for the font for
the character. The client may access the XFontStruct list
to obtain these values for all the fonts currently in use.
X Version 11 Release 6.4 1
XFontsOfFontSet(3X11) XLIB FUNCTIONS XFontsOfFontSet(3X11)
Xlib does not guarantee that fonts are loaded from the
server at the creation of an XFontSet. Xlib may choose to
cache font data, loading it only as needed to draw text or
compute text dimensions. Therefore, existence of the
per_char metrics in the XFontStruct structures in the
XFontStructSet is undefined. Also, note that all proper-
ties in the XFontStruct structures are in the STRING
encoding.
The XFontStruct and font name lists are owned by Xlib and
should not be modified or freed by the client. They will
be freed by a call to XFreeFontSet with the associated
XFontSet. Until freed, their contents will not be modi-
fied by Xlib.
The XBaseFontNameListOfFontSet function returns the origi-
nal base font name list supplied by the client when the
XFontSet was created. A null-terminated string containing
a list of comma-separated font names is returned as the
value of the function. White space may appear immediately
on either side of separating commas.
If XCreateFontSet obtained an XLFD name from the font
properties for the font specified by a non-XLFD base name,
the XBaseFontNameListOfFontSet function will return the
XLFD name instead of the non-XLFD base name.
The base font name list is owned by Xlib and should not be
modified or freed by the client. It will be freed by a
call to XFreeFontSet with the associated XFontSet. Until
freed, its contents will not be modified by Xlib.
The XLocaleOfFontSet function returns the name of the
locale bound to the specified XFontSet, as a null-termi-
nated string.
The returned locale name string is owned by Xlib and
should not be modified or freed by the client. It may be
freed by a call to XFreeFontSet with the associated
XFontSet. Until freed, it will not be modified by Xlib.
The XContextDependentDrawing function returns True if the
drawing functions implement implicit text directionality
or if text drawn with the font_set might include context-
dependent drawing; otherwise, it returns False.
The XContextualDrawing function returns True if text drawn
with the font set might include context-dependent drawing;
otherwise, it returns False.
The XDirectionalDependentDrawing function returns True if
the drawing functions implement implicit text directional-
ity; otherwise, it returns False.
X Version 11 Release 6.4 2
XFontsOfFontSet(3X11) XLIB FUNCTIONS XFontsOfFontSet(3X11)SEE ALSOXCreateFontSet(3X11), XCreateOM(3X11), XCreateOC(3X11),
XExtentsOfFontSet(3X11), XFontSetExtents(3X11)
Xlib - C Language X Interface
X Version 11 Release 6.4 3
