typedef unsigned int		MYUINT;
typedef unsigned long		MYDWORD;
typedef bool			MYBOOL;
 
#ifdef _UNICODE
	typedef unsigned short		MYTCHAR;
	typedef const unsigned short	*MYLPCTSTR;
#else
	typedef char		MYTCHAR;
	typedef const char		*MYLPCTSTR;
#endif
 
MYDWORD __declspec(dllexport)OpenComPort(MYUINT);
MYDWORD __declspec(dllexport)CloseComPort();
MYDWORD __declspec(dllexport)SendData(MYCONST MYTCHAR*, MYCONST MYTCHAR*, _
  MYCONST MYTCHAR*);
MYDWORD __declspec(dllexport)ReceiveData(MYTCHAR*, MYTCHAR*, MYTCHAR*);