ItemType is a TIdDirItemType property that indicates the type of item represented by the collection entry. 

Values in ItemType are assigned when the registered ListParserClass for the the FTP client is used to parse the content in the Data property. The values used and allowed in the ItemType property are dependent on the file system capabilities implemented on the remote FTP server in Host. In other words, not all of the enumeration values in TIdDirItemType are used and supported in every TIdFTPListBase descendant.