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Virtual Serial Port ActiveX Control - SetDCD Method

The SetDCD method sets or clears DCD (carrier detect) signal on virtual serial port.

 
 
BOOL SetDCD(
  BOOL On // Set or clear DCD signal
);

Parameters
  On
    [in] Determines setting or clearance DCD signal of a virtual serial port. This parameter can be any of the following values:
   
Value Meaning
TRUE Set the DCD signal
FALSE Clear the DCD signal

Return Values
  If the function succeeds, the return value is TRUE. If the DCD signal was not set/cleared the return value is FALSE.

Note: this method works only when DCD signal is not connected to DSR. To resolve this problem, please, refer to SetWiring method section.

See also:

SetCTS method, SetDSR method, SetRING method.