void socketnet(HWND hwnd)
{
    WSADATA wsaData;
    //初始化Socket库
    WSAStartup(MAKEWORD(2,0),&wsaData);
    //创建一根电线
    SOCKET sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    SOCKADDR_IN sa;
    sa.sin_family=AF_INET;
    //设置电线连接服务器端的端口
    sa.sin_port = htons(IPPORT_TIMESERVER);
    //123.125.50.135是ping smtp.出来的，后面会讲使用gethostbyname来直接从
    //主机名得到ip地址
    sa.sin_addr.S_un.S_addr = inet_addr("210.0.235.14");//与time.同步
    //为什么不用设置客户端的端口，难道不需要客户端的端口吗？
    if(connect(sock,(SOCKADDR *)&sa,sizeof(sa))==SOCKET_ERROR)
    {
    ShowError();
    return;
    }
    unsigned long ulTime;
    recv(sock,(char *)&ulTime,sizeof(unsigned long),0);
    ulTime = ntohl(ulTime);
    SYSTEMTIME st;
    UINT64 uiCurTime, uiBaseTime, uiResult;
    uiBaseTime = ((UINT64) HIGHTIME << 32) + LOWTIME;
    uiCurTime = (UINT64)ulTime * (UINT64)10000000;
    uiResult = uiBaseTime + uiCurTime;
    FileTimeToSystemTime((LPFILETIME)&uiResult, &st);

    TCHAR Buffer[256];
    ZeroMemory(buffer,sizeof(buffer)/sizeof(char));
   
    wsprintf(Buffer,TEXT("%s年%s月%s日 %s时%s分%s秒"),st.wYear,st.wMonth,st.wDay,st.wHour,st.wMinute,st.wSecond);

    SetDlgItemText(hwnd,IDC_EDIT1,Buffer);
    SetSystemTime(&st);//设置系统时间

    closesocket(sock);
    WSACleanup();
}

检查调试发现运行到这句就出现内存错误！
很是费解，请求高手帮忙！！！！
wsprintf(Buffer,TEXT("%s年%s月%s日 %s时%s分%s秒"),st.wYear,st.wMonth,st.wDay,st.wHour,st.wMinute,st.wSecond);

因为SYSTEMTIME结构里都是整形成员变量，用%s肯定运行报错了。