ITnef : IUnknown
Applies to: Outlook 2013 | Outlook 2016
Provides methods for encapsulating MAPI properties that are not supported by a messaging system into binary streams that can be attached to messages. The format used for this encapsulation is the Transport-Neutral Encapsulation Format (TNEF). The target transport provider or MAPI-based client application can then, on receiving a message that includes a TNEF attachment, recover the properties from the attachment.
| Property | Value |
|---|---|
| Header file: |
Tnef.h |
| Exposed by: |
TNEF objects |
| Implemented by: |
MAPI |
| Called by: |
Transport providers, message store providers, and gateways |
| Interface identifier: |
IID_ITNEF |
| Pointer type: |
LPTNEF |
Vtable order
| Member | Description |
|---|---|
| AddProps |
Enables the calling service provider or gateway to add properties to the encapsulation of a message or an attachment. |
| ExtractProps |
Extracts the properties from a TNEF encapsulation. |
| Finish |
Finishes processing for all TNEF operations that are queued and waiting. |
| OpenTaggedBody |
Opens a stream interface on the text of an encapsulated message. |
| SetProps |
Sets the value of one or more properties for an encapsulated message or attachment without modifying the original message or attachment. |
| EncodeRecips |
Encodes a view for a message's recipient table in the TNEF data stream for the message. |
| FinishComponent |
Processes individual components from a message one at a time into a TNEF stream. |