[MS-VDS]: Virtual Disk Service (VDS) Protocol Specification

4.2.2 Receiving NotificationsThe following figure shows an example of what happens when one or more VDS events aretriggered.Figure 5: VDS event triggered1. For each callback that was registered, the server calls IVdsAdviseSink::OnNotify() with anarray of VDS_NOTIFICATION structures that describe the events that were triggered.2. The client returns an HRESULT of 0x00000000 to acknowledge the notification.4.2.3 Unregistering for NotificationsThe following figure shows an example of a client that cancels a previous registration for anotification.Figure 6: Client canceling previous registration for notification1. The client requests unregistration by calling the IVdsService::Unadvise method and passingthe cookie value that was received during registration.[MS-VDS] — v20110610Virtual Disk Service (VDS) Protocol SpecificationCopyright © 2011 Microsoft Corporation.Release: Friday, June 10, 2011285 / 360