CoInitialize(NULL);
    try
    {
        m_pConn.CreateInstance("ADODB.Connection");
        m_pConn->ConnectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=red.mdb;Persist Security Info=False";
        m_pConn->Open("","","",adConnectUnspecified);
    }
    catch(_com_error e)
    {
        ::CoUninitialize();
        ::AfxMessageBox(e.ErrorMessage());
        //return false;
    }
我想把上面红色的代码放到**App类中的InitInstance()函数，那面在使用下面代码时，怎么引用m_pConn这个变量?



    m_pRs.CreateInstance("ADODB.Recordset");
    m_pRs->Open((_variant_t)("select * from admin"),
        _variant_t((IDispatch *)m_pConn,true),
        adOpenStatic,adLockOptimistic,adCmdText);

        if((passworc)==0)
        {
            m_pRs->AddNew();
            m_pRs->PutCollect("username",_variant_t(username));
            m_pRs->PutCollect("password",_variant_t(password));
            m_pRs->Update();
            MessageBox("注册成功！");
        }
        else
        {
            MessageBox("两次输入密码不一致");
        }