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Assembly: Microsoft.Office.Interop.UccApi (in microsoft.office.interop.uccapi.dll)
Defines the interface for contact events. An application must implement this interface and advise an IUccContact instance of the implementation to be notified of changes of a contact's property and of the contact's membership in a group. This is a dispinterface. Its members define the event handlers for the events raised by an IUccContact object. To catch the events, a UCC API client must implement these event handlers and advise the event source of the implementation if it is interested in receiving the events. To prevent memory leaks, the client should unadvise the events when it is no longer interested in the events.
Win32 COM/C++ Syntax