__fastcall virtual TDBISAMParam(System::Classes::TCollection*
      Collection)

__fastcall TDBISAMParam(TDBISAMParams* AParams)

Use the New operator to create an instance of a TDBISAMParam object using the constructor. However, you should never need to create an instance of the TDBISAMParam object since one is automatically created when using the CreateParam method of the TDBISAMParams object.