The IMessage interface is used for managing messages, attachments, and recipients.
| Header file: | MAPIDEFS.H |
| Exposed by: | Message object |
| Implemented by: | Message store providers |
| Called by: | Client applications |
| Interface identifier: | IID_IMessage |
| Pointer type: | LPMESSAGE |
| Transaction model: | Transacted |
| GetAttachmentTable | Returns the message's attachment table. |
| OpenAttach | Opens an attachment. |
| CreateAttach | Creates a new attachment. |
| DeleteAttach | Deletes an attachment. |
| GetRecipientTable | Returns the message's recipient table. |
| ModifyRecipients | Adds, deletes, or modifies message recipients. |
| SubmitMessage | Saves all changes to the message and marks it as ready for sending. |
| SetReadFlag | Sets or clears the MSGFLAG_READ flag in the PR_MESSAGE_FLAGS property of the message and manages the sending of read reports. |
The following properties are required on messages at some point during their lifecycle. Most of the read-only properties are set by the message store provider when a client calls a message's IMAPIProp::SaveChanges method. Other read-only properties are set by the transport provider.
| Required properties for messages of all classes | Access |
|---|---|
| PR_CREATION_TIME | Read-only |
| PR_DISPLAY_BCC | Read-only |
| PR_DISPLAY_CC | Read-only |
| PR_DISPLAY_TO | Read-only |
| PR_ENTRYID | Read-only |
| PR_LAST_MODIFICATION_TIME | Read-only |
| PR_MESSAGE_ATTACHMENTS | Read-only |
| PR_MESSAGE_CLASS | Read/write |
| PR_MESSAGE_FLAGS | Read/write |
| PR_MESSAGE_RECIPIENTS | Read-only |
| PR_MESSAGE_SIZE | Read-only |
| PR_MESSAGE_CC_ME | Read-only |
| PR_MESSAGE_RECIP_ME | Read-only |
| PR_MESSAGE_TO_ME | Read-only |
| PR_NORMALIZED_SUBJECT | Read-only |
| PR_ORIGINATOR properties | Read-only |
| PR_PARENT_DISPLAY | Read-only |
| PR_PARENT_ENTRYID | Read-only |
| PR_RECEIVED_BY properties | Read-only |
| PR_RECIPIENT_TYPE | Read-only |
| PR_RECORD_KEY | Read-only |
| PR_SEARCH_KEY | Read-only |
| PR_SENDER properties | Read-only |
| PR_STORE_ENTRYID | Read-only |
| PR_STORE_RECORD_KEY | Read-only |
The following properties are all read-only to clients, with the exception of PR_BODY. Clients construct this property when they process a report.
| Properties for message recipients | Access | Required or optional |
|---|---|---|
| PR_ADDRTYPE | Read-only | Required |
| PR_DISPLAY_NAME | Read/write | Required |
| PR_DISPLAY_TYPE | Read/write | Required |
| PR_EMAIL_ADDRESS | Read-only | Optional |
| PR_ENTRYID | Read-only | Required |
| PR_OBJECT_TYPE | Read-only | Required |
| PR_SEARCH_KEY | Read-only | Optional |