FunctionPackage: cgToCDocOverviewCGDocRelNotesFAQIndexPermutedIndex
Allegro CL version 8.1
Unrevised from 8.0 to 8.1.
8.0 version

image-list-open-p

Arguments: image-list

This function returns true if and only if the argument image-list is currently open. Currently Common Graphics uses image-lists only for list-view controls, which automatically open their image-lists when needed, so this function is not likely to be needed by applications.

Note that if a list-view control that does not have the share-image-lists property turned on is removed from its dialog or the dialog is closed, then the operating system will destroy any image lists that were used by the list-view control. An application can call image-list-open-p to determine whether this has happened. On the other hand, close-image-list is not called when the OS destroys an image-list, and so an application cannot check for this occurrence by wrapping close-image-list, and should call image-list-open-p instead.


Copyright (c) 1998-2009, Franz Inc. Oakland, CA., USA. All rights reserved.
Documentation for Allegro CL version 8.1. This page was not revised from the 8.0 page.
Created 2009.7.29.

ToCDocOverviewCGDocRelNotesFAQIndexPermutedIndex
Allegro CL version 8.1
Unrevised from 8.0 to 8.1.
8.0 version