TIdFTPStatusEvent is an event type signalled to indicate the status of an FTP client connection. TIdFTPStatusEvent is the event type for the
TIdFTP.OnFTPStatus event handler, and allows the FTP client to be updated as a result of a change in the client connection state. TIdFTPStatusEvent is signalled to
TIdFTP.OnFTPStatus when the FTP client is connected, and before and after Get and Put operations.