Provides information about a folder's support for sharing.
|Provided By:||Message store provider|
|GetSupportMask||Gets information about a folder's support for sharing.|
Generally, Microsoft Office Outlook requires a MAPI store provider to implement this interface if the provider wants to share a folder. The exception is the Exchange Server store provider, which can share folders without implementing this interface.
A client can query an IMAPIFolder for IFolderSupport. If that succeeds, call IFolderSupport::GetSupportMask and check for the FS_SUPPORTS_SHARING bit to be set.