| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version |
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) 1998-2016, 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 Unrevised from 8.1 to 8.2. 8.1 version |