.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
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.TH XFontSetExtents 3X11 "Release 5" "X Version 11" "XLIB FUNCTIONS"
.SH NAME
XFontSetExtents \- XFontSetExtents structure
.SH STRUCTURES
The
.ZN XFontSetExtents
structure contains:
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typedef struct {
	XRectangle max_ink_extent;	/* over all drawable characters */
	XRectangle max_logical_extent;	/* over all drawable characters */
} XFontSetExtents;
.De
.LP
The 
.ZN XRectangles
used to return font set metrics are the usual Xlib screen-oriented 
.ZN XRectangles ,
with x, y giving the upper left corner, and width and height always positive.
.LP
The max_ink_extent member gives the maximum extent, over all drawable characters, of
the rectangles which bound the character glyph image drawn in the
foreground color, relative to a constant origin.
See 
.ZN XmbTextExtents
and
.ZN XwcTextExtents
for detailed semantics.
.LP
The max_logical_extent member gives the maximum extent,
over all drawable characters, of the rectangles 
which specify minimum spacing to other graphical features,
relative to a constant origin.
Other graphical features drawn by the client, for example,
a border surrounding the text, should not intersect this rectangle.
The max_logical_extent member should be used to compute minimum 
inter-line spacing and the minimum area which must be allowed
in a text field to draw a given number of arbitrary characters.
.LP
Due to context-dependent rendering,
appending a given character to a string may increase 
the string's extent by an amount which exceeds the font's max extent:
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.Ds 0
max possible added extent = (max_extent * <total # chars>) \- prev_string_extent
.De
.SH "SEE ALSO"
XCreateFontSet(3X11),
XExtentsOfFontSet(3X11),
XFontsOfFontSet(3X11)
.br
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