PidTagAttachEncoding Canonical Property
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Contains an ASN.1 object identifier that specifies the encoding for an attachment.
This property identifies the algorithm used to transform the data in an attachment.
Note The PR_ATTACH_ENCODING and PR_ATTACH_TAG (PidTagAttachTag) properties should not be confused. They are not paired or related. PR_ATTACH_TAG identifies the application that originally generated the attachment. "Object" has a much more general meaning in the term object identifier, and in X.400, than in object-oriented programming.
The object identifier syntax and sample object identifiers are defined in the MAPIOID.H header file. Values for PR_ATTACH_ENCODING are not limited to those defined in MAPIOID.H. For example, attached Macintosh files can use an identifier such as MacBinary.
For complete information on these object identifiers, see the documentation on ASN.1, X.208, and X.209. The object identifier is found in the application-reference element of the FTBP (File Transfer Body Part) environment.