| Allegro CL version 8.2 Moderate update since 8.2 release. 8.1 version |
Arguments: window-or-screen draw-fn erase-fn &optional scroll-p cursor first-corner
Similar to get-box, except that
draw-fn is called each time the shape is to be
drawn and erase-fn each time it is to be
erased. draw-fn and erase-fn
must be functions (function objects or function names, typically
symbols) that accept two arguments: the window-or-screen and the
current box. When they are called, the stream brush will be set to one
pixel-width black, the stream paint operation
to po-xor
. Thus, drawing
the shape twice will suffice.
(get-box s)
is equivalent to
(get-shape-box s #'draw-box #'draw-box)
.
window-or-screen should be a window or the screen.
The screen is the value returned by (screen
*system*)
. See screen and *system*
.
If scroll-p is true, the window (identified by window-or-screen) will be scrolled if the cursor moves outside it.
Note that the resulting box may be destructively modified later by the system, so if you want to keep it around, you should make a copy of it.
See also nget-shape-box.
Copyright (c) 1998-2016, Franz Inc. Oakland, CA., USA. All rights reserved.
This page was not revised from the 8.1 page.
Created 2010.1.21.
| Allegro CL version 8.2 Moderate update since 8.2 release. 8.1 version |