IE Web Browser Control - Accessing Interfaces / Sinks

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C++

COM

browser

I'm playing around with implementing a web browser based on the Internet Explorer Web Browser control. I've created an MFC project and created a wrapper class for the control, so that class now has Create() methods and a bunch of methods that call InvokeHelper(). In and of itself, that all works; I can run the project and I do indeed get a nicely-functioning web browser in my view.

Now I would like to start tapping into the advanced functionality of the control - for example, adding an event sink for DWebBrowserEvents2. Unfortunately this is where I have hit a brick wall, as I don't seem to have a way of doing anything COM-like, such as QueryInterface() or whatever is required for the event sink from that wrapper class.

The article here:

http://www.codeproject.com/Articles/9014/Understanding-COM-Event-Handling

talks about using a smart pointer to start implementing the sink (e.g.: m_spIEventFiringObject.CreateInstance(__uuidof(EventFiringObject)); ), but the wrapper class doesn't seem to expose anything IID / uuid-related to do that.

I had a look at COleControlSite, which I can get from the class, but that didn't give too many clues.

The code for my wrapper class starts with this sort of thing:

class CWebBrowser : public CWnd
{
protected:
    DECLARE_DYNCREATE(CWebBrowser)
public:
    CLSID const& GetClsid()
    {
        static CLSID const clsid
            = { 0x8856F961, 0x340A, 0x11D0, { 0xA9, 0x6B, 0x0, 0xC0, 0x4F, 0xD7, 0x5, 0xA2 } };
        return clsid;
    }
    virtual BOOL Create(LPCTSTR lpszClassName, LPCTSTR lpszWindowName, DWORD dwStyle,
                        const RECT& rect, CWnd* pParentWnd, UINT nID, 
                        CCreateContext* pContext = NULL)
    { 
        return CreateControl(GetClsid(), lpszWindowName, dwStyle, rect, pParentWnd, nID); 
    }

    BOOL Create(LPCTSTR lpszWindowName, DWORD dwStyle, const RECT& rect, CWnd* pParentWnd, 
                UINT nID, CFile* pPersist = NULL, BOOL bStorage = FALSE,
                BSTR bstrLicKey = NULL)
    { 
        return CreateControl(GetClsid(), lpszWindowName, dwStyle, rect, pParentWnd, nID,
        pPersist, bStorage, bstrLicKey); 
    }

// Attributes
public:
enum
...

// Operations
public:

// IWebBrowser2

// Functions
//

    void GoBack()
    {
        InvokeHelper(0x64, DISPATCH_METHOD, VT_EMPTY, NULL, NULL);
    }
    void GoForward()
    {
        InvokeHelper(0x65, DISPATCH_METHOD, VT_EMPTY, NULL, NULL);
    }

Can anyone help guide me as to how to proceed?

Thanks.