ShDocVw in C#

[raghavendra2007]

Hi,

I am developing a screen reader application in C#. So, I hooked the system using SetWindowsHookEx Win32 API. Now I need to access the information from Internet Explorer. So, I am using ShellWindowsClass in ShDocVw.dll, I could be able to work with ShellWindowsClass seperately, but If I use this in Hooking applciation I am getting an error, error is shown below

error:
Retrieving the COM class factory for component with CLSID {...} failed due to the following error: 80070002.

Code I have written is:

static private SHDocVw.IWebBrowser2 spBrowser;
        static private SHDocVw.IShellWindows m_spSHWinds = null;
        public string LoadPage()
        {
            try
            {
                m_spSHWinds = new ShellWindowsClass();
                int cnt = m_spSHWinds.Count;
                return cnt.ToString();
            }
            catch (Exception e)
            {
                Debug.WriteLine(e.Message);
                return e.Message;
 
            }
        }

Any help is appreciated for above problem.

Thanks,
Raghavendra.