box-left

Arguments: box

Returns the coordinate of the left edge of box. This function is setf'able. Thus:

;; We create a box object and then modify the left, top, and right
;; components using SETF and the SETF function (note the arguments
;; to the SETF function are NEW-VALUE BOX).
;; These ways work for each component.
;;
cg-user(26): (setq b1 (make-box 10 20 30 40))
#<box 10 20 30 40>
cg-user(27): (list (box-left b1) (box-top b1) (box-right b1) (box-bottom b1))
(10 20 30 40)
cg-user(28): (setf (box-left b1) 11)
11
cg-user(29): (setf (box-top b1) 21)
21
cg-user(30): (apply #'(setf box-right) (list 31 b1))
31
cg-user(31): (list (box-left b1) (box-top b1) (box-right b1) (box-bottom b1))
(11 21 31 40)
cg-user(32): 

See the description of the box class for general information on boxes.

Copyright (c) 1998-2022, Franz Inc. Lafayette, CA., USA. All rights reserved.
This page was not revised from the 10.0 page.
Created 2019.8.20.