Exchange Calls Sink Class Interface Methods

[This is preliminary documentation and subject to change.]

Event sinks are COM classes that expose “event” interfaces defined by Exchange. When a store event occurs, Exchange (the event sink source) creates an instance of the event sink COM class, obtains the appropriate COM interface, and invokes the appropriate interface "event" method.

The following illustrates the how Exchange calls an event sink:

1. An item is saved to the store, causing a Web Store event.
1. The Exchange event sink source obtains the required interface.
2. The event sink source calls the method relating to that event notification.