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OLE Attachments

Last modified: January 16, 2009

Applies to: Office 2010 | Outlook 2010 | Visual Studio

Attachments that are OLE objects are encoded as OLE 1 stream objects for backward compatibility. If the original object is really an OLE 2 IStorage object, then the object must be converted to an OLE 1 stream. This conversion is performed using the OleConvertIStorageToOLESTREAM function, which is part of the Win32 OLE libraries.