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Contains information about an event that has occurred and the data that has been affected by the event.
Type of notification event that occurred. The value of the ulEventType member corresponds to the structure that is included in the info union.
The ulEventType member can be set to one of the following values:
A global error has occurred, such as a session shut down in progress. The info member contains an ERROR_NOTIFICATION structure.
An internal event defined by a particular service provider has occurred. The info member contains an EXTENDED_NOTIFICATION structure.
A message has been delivered to the appropriate receive folder for the message class and is waiting to be processed. The info member contains an NEWMAIL_NOTIFICATION structure.
One or more NOTIFICATION structures are passed as input parameters with every call to a registered advise sink's IMAPIAdviseSink::OnNotify method. The NOTIFICATION structures contain information about the particular events that have occurred and describe the affected objects.
Before clients or service providers receiving a notification can use the structure to process the event, they must check the event type as indicated in the ulEventType member. For example, the code sample that is shown here checks for the arrival of a new message and upon detecting an event of this kind, prints out the message class of the message.