PidTagContentUnreadCount Canonical Property
Contains the number of unread messages in a folder, as computed by the message store.
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Associated properties: |
PR_CONTENT_UNREAD |
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Identifier: |
0x3603 |
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Data type: |
PT_LONG |
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Area: |
Folder |
This property contains the number of messages in the folder contents table for which the MSGFLAG_READ flag is not set in the PR_MESSAGE_FLAGS (PidTagMessageFlags) property. The PR_CONTENT_COUNT (PidTagContentCount) property contains the total message count for the folder. The PR_CONTENT_COUNT and this property are read-only to clients.
Some client applications display the heading row of a category differently depending on the value of this property. For example, a client can display a category that includes unread messages in bold. This property cannot be used as a category and an attempt to do so results in the MAPI_E_INVALID_PARAMETER value being returned from the IMAPITable::SortTable method.
Protocol Specifications
- [MS-OXPROPS]
Provides references to related Exchange Server protocol specifications.
- [MS-OXCFOLD]
Handles folder operations.
- [MS-OXCTABL]
Includes permissible operations for the core table objects.
Header Files
- Mapidefs.h
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Provides data type definitions.
- Mapitags.h
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Contains definitions of properties listed as alternate names.
