PidTagAttachExtension Canonical Property

  • Article

Applies to: Office 2010 | Outlook 2010 | Visual Studio

Contains a file name extension that indicates the document type of an attachment.

Associated properties:

PR_ATTACH_EXTENSION, PR_ATTACH_EXTENSION_A, PR_ATTACH_EXTENSION_W

Identifier:

0x3703

Data type:

PT_STRING8, PT_UNICODE

Area:

Message attachment

Remarks

These properties are set by the client application at submission time.

The messaging system uses PR_ATTACH_EXTENSION when converting message attachments (in-route conversion) or launching applications based on attachments in received messages. If the sending client does not provide a value for these properties, the message store handling the attachment is not obligated to generate it. The receiving client should first check for PR_ATTACH_EXTENSION, and if it is not provided, should parse the file name extension from the attachment's PR_ATTACH_FILENAME (PidTagAttachFilename) or PR_ATTACH_LONG_FILENAME (PidTagAttachLongFilename) property.

Protocol Specifications

Header Files

  • Mapidefs.h
    Provides data type definitions.

  • Mapitags.h
    Contains definitions of properties listed as alternate names.

See Also

Concepts

MAPI Properties

MAPI Canonical Properties

Mapping Canonical Property Names to MAPI Names

Mapping MAPI Names to Canonical Property Names