How do I separate inline images and attaches using MAPI?

Question

My program uses MAPI for working with Exchange mailboxes. The problem is if a user fires up Outlook, adds a file as an attachment and also opens Paint, selects a region there, copies it into clipboard and pastes into the message body the resulting message showns two attachments.

More specifically, the program calls IMAPIMessage::GetAttachmentsTable() to retrieve the attachments table and that table contains two objects. Is there a way a program can decide whether the "attachment" is really an attached file or a portion of inline content?

Answer 1

You will need to check whether the HTML body (through the img tag) refers to the attachment, either through img:cid and PT_ATTACH_CONENTS_ID property or though the file name (PR_ATTACH_LONG_FILENAME) or contnet location (PR_ATTACH_COMTENT_LOCATION).

Answer 2

The property you are looking for is PR_RENDERING_POSITION (0x370B0003). A -1 means that the attachment is a "normal" attachment and not in-line. If the value is anything other than -1, then that indicates an in-line attachment and the value is the position in the body that the attachment should be rendered at.

Here is the MSDN page describing it.

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EDIT:

Dmitry, I do not agree with your comment. I have HTML email messages with in-line attachments and the PR_RENDERING_POSITION is working as described in the MSDN page I posted.