C / C++ / MFC

Class CxxxxView:CFormView
{
....
....
}

struct MyStructure
{
CString label//For others data types char, BYTE, etc it works but for CString it doesn't 
unsignet char data1
BYTE data2
}

    struct MyStructure Estructura;
    CFile FileConfig;              

FileConfig.Open("ROMconfig.dat",CFile::modeCreate|CFile::modeNoTruncate|CFile::modeWrite);
     FileConfig.Seek(0,CFile::begin);
     FileConfig.Write(&Estructura,sizeof(Estructura));
     FileConfig.Close();

	struct MyStructure Estructura;
	CFile FileConfig ;		  

FileConfig.Open("ROMconfig.dat",CFile::modeCreate|CFile::modeNoTruncate|CFile::modeRead);
	FileConfig.Seek(0,CFile::begin);
	FileConfig.Read(&Estructura,sizeof(Estructura));
        FileConfig.Close();

_CatalogPtr m_pCatalog  = NULL;
CString con="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\test.mdb;Jet OLEDB:Engine Type=5";
 HRESULT hr = S_OK;
		   try
 	{
			
		
       TESTHR(hr = m_pCatalog.CreateInstance(__uuidof (Catalog)));
	
	m_pCatalog->Create((_bstr_t)con);
}
 catch(_com_error pCE)
    {
}


.
.//create table
.
.
m_pCatalog->Release();
 CoUninitialize();   

HRESULT CreateInstance(const CLSID& rclsid, IUnknown* pOuter = NULL, DWORD dwClsContext = CLSCTX_ALL) throw()
   {
       HRESULT hr;

          point out this line 
       _Release();//this line

       if (dwClsContext & (CLSCTX_LOCAL_SERVER | CLSCTX_REMOTE_SERVER)) {
           IUnknown* pIUnknown;
           hr = CoCreateInstance(rclsid, pOuter, dwClsContext, __uuidof(IUnknown), reinterpret_cast<void**>(&pIUnknown));

           if (SUCCEEDED(hr)) {
               hr = OleRun(pIUnknown);

               if (SUCCEEDED(hr)) {
                   hr = pIUnknown->QueryInterface(GetIID(), reinterpret_cast<void**>(&m_pInterface));
               }

               pIUnknown->Release();
           }
       }
       else {
           hr = CoCreateInstance(rclsid, pOuter, dwClsContext, GetIID(), reinterpret_cast<void**>(&m_pInterface));
       }

       if (FAILED(hr)) {
           // just in case refcount = 0 and dtor gets called
           m_pInterface = NULL;
       }

       return hr;
   }