3.39.4 Message Processing Events and Sequencing Rules

To obtain an IUpdateSearcher instance, a client MUST call the IUpdateSession::CreateUpdateSearcher (section 3.16.4.4) method.

To obtain an IUpdateSearcher2 instance, a client MUST first obtain an IUpdateSearcher interface and then call the IUnknown::QueryInterface method to obtain an IUpdateSearcher2 interface.

To obtain an IUpdateSearcher3 instance, a client MUST first obtain an IUpdateSearcher interface and then call the IUnknown::QueryInterface method to obtain an IUpdateSearcher3 interface.