| Allegro CL version 9.0 Unrevised from 8.2 to 9.0. 8.2 version | ||||||||||
Arguments: top-level-window
This generic function will be called when the operating system is
shutting down or logging off the current user. It should return true
to allow the shutdown, or nil to cancel the
shutdown and leave the Common Graphics application running. The
default method returns t (though in the IDE a
method returns nil if the query-os-exit configuration option is turned on
and the user replies No to an exit confirmation dialog).
A Common Graphics application has no reason to call this function, but
it could add a method to it that may decide to return nil to cancel a shutdown.
To disallow exiting an individual Common Graphics application (rather than the entire operating system), see user-close.
Copyright (c) 1998-2019, Franz Inc. Oakland, CA., USA. All rights reserved.
This page was not revised from the 8.2 page.
Created 2012.5.30.
| Allegro CL version 9.0 Unrevised from 8.2 to 9.0. 8.2 version | ||||||||||