| Allegro CL version 6.2 Unrevised from 6.1 |
Arguments: drawable
Returns the bitmap-stream most recently used by a drawable
, or nil
if none has been used. This function is not
setf'able; the bitmap-stream
is created automatically when the use-bitmap-stream property is
turned on. Setting use-bitmap-stream to nil
disassociates any bitmap-stream from a drawable, although this
function will still return the now-unused bitmap-stream.
Thus, if use-bitmap-stream has been turned on and then off, then the leftover bitmap-stream will still be returned. Therefore, an application should not assume that a drawable is currently using a bitmap stream simply because bitmap-stream returns true. Call use-bitmap-stream instead to determine if one is currently being used.
Copyright (c) 1998-2002, Franz Inc. Oakland, CA., USA. All rights reserved.
Documentation for Allegro CL version 6.2. This page was not revised from the 6.1 page.
Created 2002.2.26.
| Allegro CL version 6.2 Unrevised from 6.1 |