windows-screen-device

Class

Package: common-graphics

This is the class of the screen. Calling type-of on the screen will return this symbol rather than (as in earlier releases) an unpredictable gensymed name of a subclass of this class (the name of this class was not exported in releases prior to 6.0). If an application wishes to prepare for the possibility of multiple screens, it may be best to test whether something (named by object is the screen with a form like

(typep object 'windows-screen-device) 

rather than

(eq object (screen *system*))

See also screen.

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.