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| Allegro CL version 10.1 Unrevised from 10.0 to 10.1. 10.0 version

## graphics-context-p

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) 1998-2022, Franz Inc. Lafayette, CA., USA. All rights reserved.
This page was not revised from the 10.0 page.
Created 2019.8.20.

|  | ToC | DocOverview | CGDoc | RelNotes | FAQ | Index | PermutedIndex
| Allegro CL version 10.1 Unrevised from 10.0 to 10.1. 10.0 version