ATL IE Addon: Capturing mouse events?

From:

Peter Kronk <pkronk@trashmail.net>

Newsgroups:

microsoft.public.vc.atl

Date:

Mon, 04 Jun 2007 22:36:59 +0200

Message-ID:

<466477e9$1@news.uni-rostock.de>

Hi,

I'm an ATL beginner using Visual Studio 2005 and read some guides and
tutorials to get an IE extension working:

Example:
http://msdn.microsoft.com/library/en-us/IETechCol/cols/dnexpie/expie_hello_bho.asp?frame=true

At this time I'm able to capture events using DWebBrowserEvents2.
Now I really need to capture mouse events, e.g. using HTMLDocumentEvents.
So how do I register the event sink for HTMLDocumentEvents?
How do I implement a working event handler?

I already read these guides from codeproject.com but I was not able to
get it working:
http://www.codeproject.com/atl/popupblocker.asp
http://www.codeproject.com/atl/popupblocker2.asp
http://www.codeproject.com/atl/MouseGestures.asp

The guides are mostly quite old and not easy to follow with Visual
Studio 2005

Is it possible to do capture mouse events without implementing the
invoke method? If I implement invoke(), it seems that I'm not able to
handle events with event sinks using SINK_ENTRY_EX anymore..

Thanks in advance for any help!

Peter

A piece of my code:

Klasse.h:

(...)
#include <shlguid.h> // IID_IWebBrowser2, DIID_DWebBrowserEvents2
#include <exdispid.h> // DISPID_DOCUMENTCOMPLETE, etc.
#include <mshtml.h> // IHTMLDocumentEvents and stuff..
#include <mshtmdid.h> // DISPID_HTMLDOCUMENTEVENTS_ONCLICK, etc.
(...)
class ATL_NO_VTABLE CKlasse :
    public CComObjectRootEx<CComSingleThreadModel>,
    public CComCoClass<CKlasse, &CLSID_Klasse>,
    public IConnectionPointContainerImpl<CKlasse>,
    public CProxy_IKlasseEvents<CKlasse>,
    public IObjectWithSiteImpl<CKlasse>,
    public IDispatchImpl<IKlasse, &IID_IKlasse, &LIBID_ProjektLib, /*wMajor
=*/ 1, /*wMinor =*/ 0>,
    public IDispEventImpl<1, CKlasse, &DIID_DWebBrowserEvents2,
&LIBID_SHDocVw, 1, 1>,
// another derive from IDispEventImpl for HTMLDocumentEvents..
// is this correct?
    public IDispEventImpl<2, CKlasse, &DIID_HTMLDocumentEvents,
&LIBID_MSHTML, 1, 1>
(...)
BEGIN_SINK_MAP(CKlasse)
// first sink entry to handle DISPID_DOCUMENTCOMPLETE
    SINK_ENTRY_EX(1, DIID_DWebBrowserEvents2, DISPID_DOCUMENTCOMPLETE,
OnDocumentComplete)
// second sink entry to handle DISPID_HTMLDOCUMENTEVENTS_ONCLICK..
// correct?
    SINK_ENTRY_EX(2, DIID_HTMLDocumentEvents,
DISPID_HTMLDOCUMENTEVENTS_ONCLICK, OnClick)
END_SINK_MAP()
(...)
private:
BOOL m_fAdvisedHTML;

***************

Klasse.cpp:

(...)
STDMETHODIMP CKlasse::SetSite(IUnknown* pUnkSite)
{
     if (pUnkSite != NULL) {
         // Cache the pointer to IWebBrowser2.
         HRESULT hr = pUnkSite->QueryInterface(IID_IWebBrowser2, (void
**)&m_spWebBrowser);
         if (SUCCEEDED(hr)) {
             // Register to sink events from DWebBrowserEvents2.
             // Need to disambiguate calls..
             hr = IDispEventImpl<1, CIEAddonBHO,
&DIID_DWebBrowserEvents2, &LIBID_SHDocVw, 1,
1>::DispEventAdvise(m_spWebBrowser);
             if (SUCCEEDED(hr)) {
                 m_fAdvised = TRUE;
             }
             hr = IDispEventImpl<2, CIEAddonBHO,
&DIID_HTMLDocumentEvents, &LIBID_MSHTML, 1,
1>::DispEventAdvise(m_spWebBrowser);
             if (SUCCEEDED(hr)) {
                 m_fAdvisedHTML = TRUE;
             }
         }
     } else {
         // Unregister event sink.
    // Again disambiguation..
         if (m_fAdvised) {
        IDispEventImpl<1, CIEAddonBHO, &DIID_DWebBrowserEvents2,
&LIBID_SHDocVw, 1, 1>::DispEventUnadvise(m_spWebBrowser);
        m_fAdvised = FALSE;
         }
    if (m_fAdvisedHTML) {
        IDispEventImpl<2, CIEAddonBHO, &DIID_HTMLDocumentEvents,
&LIBID_MSHTML, 1, 1>::DispEventUnadvise(m_spWebBrowser);
        m_fAdvisedHTML = FALSE;
    }
         // Release cached pointers and other resources here.
         m_spWebBrowser.Release();
     }
     // Call base class implementation.
     return IObjectWithSiteImpl<CKlasse>::SetSite(pUnkSite);
}