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.
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Header file:
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Tnef.h
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Exposed by:
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TNEF objects
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Implemented by:
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MAPI
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Called by:
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Transport providers, message store providers, and gateways
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Interface identifier:
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IID_ITNEF
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Pointer type:
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LPTNEF
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AddProps
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Enables the calling service provider or gateway to add properties to the encapsulation of a message or an attachment.
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ExtractProps
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Extracts the properties from a TNEF encapsulation.
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Finish
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Finishes processing for all TNEF operations that are queued and waiting.
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OpenTaggedBody
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Opens a stream interface on the text of an encapsulated message.
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SetProps
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Sets the value of one or more properties for an encapsulated message or attachment without modifying the original message or attachment.
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EncodeRecips
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Encodes a view for a message's recipient table in the TNEF data stream for the message.
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FinishComponent
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Processes individual components from a message one at a time into a TNEF stream.
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Concepts
MAPI Interfaces
