Проблема с hInstance в Extension DLLs (Release версии) ...

CTestWnd::CTestWnd()
{
 RegisterWindowClass();
}

BOOL CTestWnd::RegisterWindowClass()
{
 HINSTANCE hInstance;
 WNDCLASS  WindowClass;
 BOOL      bRetCode;

 hInstance=AfxGetInstanceHandle();

 if(!GetClassInfo(hInstance,
      TESTWINDOW_CLASSNAME,&WindowClass))
 {
  WindowClass.style         = CS_HREDRAW|CS_VREDRAW|
                              CS_DBLCLKS|CS_NOCLOSE;
  WindowClass.lpfnWndProc   = ::DefWindowProc;
  WindowClass.cbClsExtra    = 0;
  WindowClass.cbWndExtra    = 0;
  WindowClass.hInstance     = hInstance;
  WindowClass.hIcon         = NULL;
  WindowClass.hCursor       = LoadCursor(NULL,IDC_ARROW);
  WindowClass.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
  WindowClass.lpszMenuName  = NULL;
  WindowClass.lpszClassName = TESTWINDOW_CLASSNAME;

  if(AfxRegisterClass(&WindowClass))
   bRetCode=TRUE;
  else
   bRetCode=FALSE;
 }
 else
  bRetCode=TRUE;

 return bRetCode;
}

int CTestWnd::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
 if (CWnd::OnCreate(lpCreateStruct) == -1)
  return -1;

 HINSTANCE hInstance;
 hInstance=AfxGetInstanceHandle();
 WNDCLASS ClassInfo;

 CString Str;

 Str.Format(_T("Instance=%d, Class=%s\nInstance=%d, Class=%s"),
            lpCreateStruct->hInstance,lpCreateStruct->lpszClass,
            hInstance,TESTWINDOW_CLASSNAME);

 AfxMessageBox(Str);

 if(GetClassInfo(lpCreateStruct->hInstance,
                 lpCreateStruct->lpszClass,
                 &ClassInfo))
  AfxMessageBox(_T("Was found a window class !"));
 else
  AfxMessageBox(_T("Wasn't found a window class !"));

 return 0;
}