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The PR_ATTACH_DATA_BIN property contains binary attachment data typically accessed through the OLE IStream interface.

Additional Information

May be exposed by: Attachment subobjects
Identifier: 0x3701
Property type: PT_BINARY
Property tag: 0x37010102
Corresponding X.400 attribute: IM_EXTERNAL_DATA or IM_BILATERAL_DATA


The PR_ATTACH_DATA_BIN property holds the attachment when the value of the PR_ATTACH_METHOD property is ATTACH_BY_VALUE and is the only attach method that is supported. PR_ATTACH_DATA_BIN also holds an OLE 1.0 OLESTREAM attachment when the value of PR_ATTACH_METHOD is ATTACH_OLE.

OLESTREAM attachments can be copied into a file by calling the OLE IStream::CopyTo method.


Pocket PC: Pocket PC 2002 and later
Smartphone: Smartphone 2002 and later
OS Versions: Windows CE 3.0 and later
Header: mapitags.h
Library: cemapi.lib

See Also

Windows Mobile Defined MAPI Properties

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