| Allegro CL version 6.2 Minimally revised from 6.1 | |||||||||
Arguments: stream object
Returns t if object is a
valid graphics-context for stream, and returns
nil otherwise. Currently returns t for any windows-graphics stream with any
graphics-context object, but in the future different kinds of stream
may require different graphics-contexts. stream
should be a cg-stream.
See copy-graphics-context (where all the information in a graphics-context object is described), make-graphics-context, set-graphics-context, and restoring-graphics-context.
Copyright (c) 1998-2002, Franz Inc. Oakland, CA., USA. All rights reserved.
Documentation for Allegro CL version 6.2. This page has had minimal revisions compared to the 6.1 page.
Created 2002.2.26.
| Allegro CL version 6.2 Minimally revised from 6.1 | |||||||||