FTSPCFlowControl Enumeration

ftspcFlowNone 0 No control is used for the handshake.
ftspcFlowRtsCts 1 Request-to-Send (RTS) hardware flow control is used. RTS signals that data is available for transmission.
ftspcFlowDtrDsr 2 Data-Terminal-Ready (DTR) hardware flow control is used.
ftspcFlowXonXoff 3 The XON/XOFF software flow control is used. The XOFF control is sent to stop the transmission of data. The XON control is sent to resume the transmission.
ftspcFlowCtsDsr 4 Combination of FlowRtsCts and FlowDtrDsr.