PidTagSearchAttachments Canonical Property
Published: July 16, 2012
Contains a Unicode string that is being queried in attachment contents on the store.
This MAPI restriction tag, used when you are searching for attachment contents, might not be defined in the downloadable header file that you currently have. You can add it to your code by using the following value:
#define PR_SEARCH_ATTACHMENTS_W PROP_TAG(PT_UNICODE, 0x0EA5)