Arguments: box dx dy
Modifies and returns box by subtracting dx from its left, adding it to its right, subtracting dy from its top, and adding it to its bottom, producing a box (* 2 dx) wider and (* 2 dy) higher. dx and dy must be fixnums. This function is effectively equivalent to
(setq box
(make-box (- (box-left box) dx) (- (box-top box) dy)
(+ (box-right box) dx) (+ (box-bottom box) dy)))
Common Graphics and IDE documentation is described in About Common Graphics and IDE documentation in cgide.htm.
The documentation is described in introduction.htm and the index is in index.htm.
Copyright (c) 1998-2000, Franz Inc. Berkeley, CA., USA. All rights reserved.
Created 2000.10.5.