windows通过注册表枚举串口

CStringArray m_Serial_Port;



BOOL Enum_Serial_Port() //枚举串口

{

    m_Serial_Port.RemoveAll();



    HKEY hKey;

    LPCTSTR data_Set = _T("HARDWARE\\DEVICEMAP\\SERIALCOMM\\");

    LONG ret0 = RegOpenKeyEx(HKEY_LOCAL_MACHINE, data_Set, 0, KEY_READ, &hKey);

    if(ret0 != ERROR_SUCCESS)

    {

        AfxMessageBox("错误：无法打开有关的hKEY");

        return FALSE;

    }



    DWORD dwIndex = 0;



    while(1)

    {

        LONG Status;

        CHAR Name[256]={0};

        UCHAR szPortName[80]={0};

        DWORD dwName;

        DWORD dwSizeofPortName;

        DWORD Type;



        dwName = sizeof(Name);

        dwSizeofPortName = sizeof(szPortName);

        Status = RegEnumValue(hKey, dwIndex++, Name, &dwName, NULL, &Type,

            szPortName, &dwSizeofPortName);

        if((Status == ERROR_SUCCESS)||(Status == ERROR_MORE_DATA))

        {

            CString str = szPortName;

            m_Serial_Port.Add(str);

        }

        else

        {

            break;

        }

    }

    RegCloseKey(hKey);



    return(m_Serial_Port.GetSize() > 0 ? TRUE:FALSE);

}