I am trying to differentiate between an attachment that represents an
inline image in an HTML message versus an image that is attached to
the message. (That is, Insert\Picture for foo.gif versus Insert\File
Using OutlookSpy, I tried to determine what was different between two
such attachments. One unnamed MAPI property was 0x3714, which was 4
for the inline image and 0 for the attached image file.
I found the following MAPI property on MSDN:
which apparently can have values:
However, neither PR_ATTACH_FLAGS nor the ATT_* values are listed in an
header file I can find.
Can someone help me understand this better, or at least tell me what
the ATT_* values are. One of them must have a value of 4, but I'm
hesitant to write code that depends on this without understanding it
Thanks in advance.