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.
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.