WinSockの初期化

#pragma once

#include <winsock2.h>

#pragma comment(lib, "Ws2_32.lib")

/////////////////////////////////////////////////////////////////////////////

// CWinsockInit

class CWinsockInit

{

public:

    CWinsockInit(int nMajor = 2, int nMinor = 1)

    {

        ::ZeroMemory(&m_wsaData, sizeof(WSAData));

        m_nError = ::WSAStartup(MAKEWORD(nMajor, nMinor), &m_wsaData);

    }

    virtual ~CWinsockInit()

    {

        if (m_nError == 0)

        {

            ::WSACleanup();

        }

    }

public:

    operator int() const

    {

        return m_nError;

    }

protected:

    int m_nError;

    WSAData m_wsaData;

};

;