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Announcements Framework

Announcements framework replaces the aging triggerEvent system with fully object-oriented representation of announcements (events) as instances, similar to Exceptions. The framework is smaller and faster than triggerEvent, with a smaller API (the selectors in bold below are in fact the complete API) that supports a broader set of actions.

Announcements will be the event transport layer of Pollock, the future VisualWorks UI framework.

The framework is included as preview in VisualWorks 7.4, and the most up-to-date version is also available from the Open Repository.

The most comprehensive description of the framework at the moment is a series of posts in Vassili Bykov's blog:


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