osf1 man page for xfontsetextents

XFontSetExtents(3X11)													     XFontSetExtents(3X11)

NAME
       XFontSetExtents - XFontSetExtents structure

DESCRIPTION
       The XFontSetExtents structure contains:

       typedef struct {
	       XRectangle max_ink_extent;      /* over all drawable
						  characters */
	       XRectangle max_logical_extent;  /* over all drawable
						  characters */ } XFontSetExtents;

       The  XRectangle	structures  used  to return font set metrics are the usual Xlib screen-oriented rectangles with x, y giving the upper left
       corner, and width and height always positive.

       The max_ink_extent member gives the maximum extent, over all drawable characters, of the rectangles that bound the  character  glyph  image
       drawn in the foreground color, relative to a constant origin.  See XmbTextExtents(3X11) and XwcTextExtents(3X11) for detailed semantics.

       The  max_logical_extent	member	gives  the maximum extent, over all drawable characters, of the rectangles that 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 interline spacing and the
       minimum area that must be allowed in a text field to draw a given number of arbitrary characters.

       Due to context-dependent rendering, appending a given character to a string may change the string's extent by an  amount  other	than  that
       character's individual extent.

SEE ALSO
       XCreateFontSet(3X11), XExtentsOfFontSet(3X11), XFontsOfFontSet(3X11)

       Xlib -- C Language X Interface

															     XFontSetExtents(3X11)