IOSTX : IUnknown

Applies to: Office 2010 | Outlook 2010 | Visual Studio

Provides synchronization methods. This interface retrieves the necessary information to replicate local changes to the server and server changes to the local store.

Vtable Order

Remarks

When a client uploads or synchronizes folders and folder contents on a local store, it moves the local store from one state to another as depicted in the state transition diagram in About the Replication State Machine. The following is the order of events for the client to move the local store from one state to another:

1. The client calls IOSTX::InitSync to inform the local store that replication is about to start.

2. Depending on the direction of replication and the objects to replicate, the client calls IOSTX::SyncBeg to begin replication in the appropriate state. Outlook provides the client the necessary information, and the client performs the replication.

3. The client calls IOSTX::SetSyncResult to return the result of the replication.

4. The client calls IOSTX::SyncEnd to end the replication, providing Outlook the necessary information for subsequent replication.

In particular, when downloading message items, the client uses IOSTX::SyncHdrBeg and IOSTX::SyncHdrEnd to update a full message item with the message header on the local store:

1. Upon IOSTX::SyncHdrBeg, the local store transitions into the download message header state. Outlook initially provides the client with the current message header on the local store.

2. The client downloads a full message item together with the message header.

3. Outlook updates the item on the local store with the full message item.

See Also

Concepts

About the Replication API

MAPI Constants