Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Icon Size
WIND_ICONSIZEParameter: Object
WIND_OBJECTParameter: Type
WIND_TYPEParameter: Strength
WIND_STRENGTHParameter: Decay
WIND_DECAYParameter: Mass Dependence
WIND_MASSDEPParameter: Size Dependence
WIND_SIZEDEPParameter: Turbulence
WIND_TURBULENCEParameter: Frequency
WIND_FREQUENCYParameter: Structure Size
WIND_SCALEParameter: On
IN_WIND_ONParameter: Animation Time
IN_WIND_ATIME