The PR_ORIGINAL_SUBJECT property contains the subject of an original message for use in a report about the message.
| Header file: | MAPITAGS.H |
| May be exposed by: | Message objects |
| Identifier: | 0x0049 |
| Property type: | PT_TSTRING |
| Property tag: | 0x0049001E (0x0049001F for Unicode) |
| Corresponding X.400 attribute: | IM_SUBJECT |
The PR_ORIGINAL_SUBJECT property is originally set to the same value as the PR_SUBJECT property.
The subject properties are typically small strings of fewer than 256 characters, and a message store provider is not obligated to support the OLE IStream interface on them. The client should always attempt access through the IMAPIProp interface first, and resort to IStream only if MAPI_E_NOT_ENOUGH_MEMORY is returned.