下面是给出的VB编写的标准程序，我需要转为C++
Private Sub FormMain_Activated(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Activated

    End Sub

    Private Sub FormMain_FormClosed(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosedEventArgs) Handles Me.FormClosed

        ' Clean Up
        On Error Resume Next
        m_objPQView23.Disconnect()
        m_objPQView23 = Nothing

    End Sub

    Private Sub FormMain_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

        ' Create a new PQView23 class
        m_objPQView23 = New PQView.PQView23
        With m_objPQView23
            .Database = "F:\王鑫\pqview\电科院PQView讲座资料\二次开发培训资料\Databases\PQViewDemo2008.mdb"
            .Provider = "Jet"
            .Connect()
            If Not .Connected Then
                MsgBox(.ErrDesc, MsgBoxStyle.Critical, "Connection Error")
            End If
        End With

        ' Initialize the data range
        Me.DateTimePickerStart.Value = #2/10/2003#
        Me.DateTimePickerFinish.Value = #2/11/2003#

        ' Initialize the list of demonstration options
        With
            .Items.Add(demoGetConnectionAliasList)
            .Items.Add(demoGetInfo)
            .Items.Add(demoGetSites)
            .Items.Add(demoGetSitePropertyValuesPivot)
            .Items.Add(demoGetSteadyStateSamples)
            .Items.Add(demoGetSteadyStateSamplesPivot)
            .Items.Add(demoGetSteadyStateSamplesStat)
        End With

    End Sub
以上是编的程序，从动态库PQView.dll中调用类PQView23，动态库PQView.dll是用vb编写的。本人也是初学者，不是计算机出身，试着写了下面的程序，可惜编译不过。希望各位指点下！！
int main()
{
//typedef HRESULT (__stdcall * pPQView)(REFCLSID,REFIID,void**);
//pPQView PQView= NULL;
//HINSTANCE hdllInst = LoadLibrary("C:\Windows\System32\PQView.dll");
//PQView=(pPQView)GetProcAddress(hdllInst,"DllGetClassObject");
//if (PQView != 0)
//{
// IClassFactory* pcf = NULL;
// HRESULT hr=(PQView)(_PQView23,IID_IClassFactory,(void**)&pcf);
// if (SUCCEEDED(hr) && (pcf != NULL))
// {
// _PQView23* pPQView23 = NULL;
// hr = pcf->CreateInstance(NULL, __uuidof(PQView23), (void**)&_PQView23);
// if (SUCCEEDED(hr) )
// {
// //pPQView23->Database = "pqview-sample.mdb";
// //pPQView23->Provider = "Jet";
// pPQView23->Connect();
// if(pPQView23->Connected)
// {
// printf("数据库连接成功");
// }
// else
// {
// printf("数据库连接失败");
// }
// }
// pcf->Release();
// }
//}
//FreeLibrary(hdllInst);
vb的程序是标准程序，我要转为c++ 不知道怎么回事 编译不过，dll是用vb编写的，多谢各位指教了！！！！！！ 程序目的就是调用动态库PQView.dll中的类PQView23