asked on

How can we get IWebBrowser2 interface pointer of a ShowModalDialog?

Internet Explorer is loading my activeX and calling SetSite() for popups opened by ShowModalDialog. When I query for IWebBrowser2 interface pointer I am getting error.

I tried to get IHTMLDocuent interface pointer by using Microsoft Active Accessibilty Technique.
(http://support.microsoft.com/default.aspx?kbid=249232). Problem is, IE is creating Internet Explorer_Server window after returning form SetSite method().

So please let me know how can I get IWebBrowser2 (or IHTMLDocument2) interface pointer. This is the sample code what I wrote to get interface pointer.

CComQIPtr<IOleClientSite, &IID_IOleClientSite> m_spClientSite;
CComPtr<IWebBrowser2> m_spWebBrowser2;
CComPtr<IServiceProvider> m_spSP;

STDMETHODIMP CMyTestObj::SetSite(IUnknown *pUnkSite)
{
HRESULT hr;
if(pUnkSite)
{
m_spClientSite=pUnkSite;
m_spClientSite->QueryInterface(IID_IServiceProvider,(void **)&m_spSP);
m_spSP->QueryService(IID_IWebBrowserApp, IID_IWebBrowser2,(void **)&m_spWebBrowser2);

// Retrieve and store the IWebBrowser2 pointer
if (m_spWebBrowser2 == NULL)
{
.....
.....
}
}

........
........
}

jkr

>>When I query for IWebBrowser2 interface pointer I am getting error.

Which error?

reddyrajareddy

ASKER

E_NOINTERFACE
"The service exists, but the interface requested does not exist on that service."

Dariusz Dziara

This is code I have used literally & it worked (IWebBrowser2 interface pointer was not NULL) when ActiveX control is created on html page in IE.

// EELightControl.h : Declaration of the CEELightControl

#ifndef __EELIGHTCONTROL_H_
#define __EELIGHTCONTROL_H_

#include "resource.h" // main symbols
#include <atlctl.h>

/////////////////////////////////////////////////////////////////////////////
// CEELightControl
class ATL_NO_VTABLE CEELightControl :
      public CComObjectRootEx<CComSingleThreadModel>,
      public IDispatchImpl<IEELightControl, &IID_IEELightControl, &LIBID_TEST_EE_IECONTROLLib>,
      public CComControl<CEELightControl>,
      public IPersistStreamInitImpl<CEELightControl>,
      public IOleControlImpl<CEELightControl>,
      public IOleObjectImpl<CEELightControl>,
      public IOleInPlaceActiveObjectImpl<CEELightControl>,
      public IViewObjectExImpl<CEELightControl>,
      public IOleInPlaceObjectWindowlessImpl<CEELightControl>,
      public CComCoClass<CEELightControl, &CLSID_EELightControl>
{
public:
      CEELightControl()
      {
      }

DECLARE_REGISTRY_RESOURCEID(IDR_EELIGHTCONTROL)

DECLARE_PROTECT_FINAL_CONSTRUCT()

BEGIN_COM_MAP(CEELightControl)
      COM_INTERFACE_ENTRY(IEELightControl)
      COM_INTERFACE_ENTRY(IDispatch)
      COM_INTERFACE_ENTRY(IViewObjectEx)
      COM_INTERFACE_ENTRY(IViewObject2)
      COM_INTERFACE_ENTRY(IViewObject)
      COM_INTERFACE_ENTRY(IOleInPlaceObjectWindowless)
      COM_INTERFACE_ENTRY(IOleInPlaceObject)
      COM_INTERFACE_ENTRY2(IOleWindow, IOleInPlaceObjectWindowless)
      COM_INTERFACE_ENTRY(IOleInPlaceActiveObject)
      COM_INTERFACE_ENTRY(IOleControl)
      COM_INTERFACE_ENTRY(IOleObject)
      COM_INTERFACE_ENTRY(IPersistStreamInit)
      COM_INTERFACE_ENTRY2(IPersist, IPersistStreamInit)
END_COM_MAP()

BEGIN_PROP_MAP(CEELightControl)
      PROP_DATA_ENTRY("_cx", m_sizeExtent.cx, VT_UI4)
      PROP_DATA_ENTRY("_cy", m_sizeExtent.cy, VT_UI4)
      // Example entries
      // PROP_ENTRY("Property Description", dispid, clsid)
      // PROP_PAGE(CLSID_StockColorPage)
END_PROP_MAP()

BEGIN_MSG_MAP(CEELightControl)
      CHAIN_MSG_MAP(CComControl<CEELightControl>)
      DEFAULT_REFLECTION_HANDLER()
END_MSG_MAP()
// Handler prototypes:
// LRESULT MessageHandler(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
// LRESULT CommandHandler(WORD wNotifyCode, WORD wID, HWND hWndCtl, BOOL& bHandled);
// LRESULT NotifyHandler(int idCtrl, LPNMHDR pnmh, BOOL& bHandled);

// IViewObjectEx
      DECLARE_VIEW_STATUS(VIEWSTATUS_SOLIDBKGND | VIEWSTATUS_OPAQUE)

// IEELightControl
public:

      HRESULT OnDraw(ATL_DRAWINFO& di)
      {
//...
      }

      STDMETHOD(SetClientSite)(IOleClientSite *pClientSite)
      {
            if(pClientSite != NULL) {
                  HRESULT hRes;

                  hRes = pClientSite->QueryInterface(IID_IServiceProvider, (void **)&m_pIServiceProvider);

                  if(SUCCEEDED(hRes)) {
                        hRes = m_pIServiceProvider->QueryService(IID_IWebBrowserApp, IID_IWebBrowser2, (void **)&m_pIWebBrowser);
                  };
            };

            return IOleObject_SetClientSite(pClientSite);
      }
private:
      CComPtr<IServiceProvider> m_pIServiceProvider;
      CComPtr<IWebBrowser2> m_pIWebBrowser;
};

#endif //__EELIGHTCONTROL_H_

reddyrajareddy

ASKER

I tested above code. Let me explain the result.

I kept the object tag in a .html page with appropriate clsid. When I open the page in main browser, I could get IWebBrowser2 interface pointer.

If I open the page with ShowModalDialog( ), QueryService is returning E_NOINTERFACE.

Are you sure that you are getting IWebBrowser2 interface pointer in ShowModalDialog case?

ASKER CERTIFIED SOLUTION

Dariusz Dziara

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reddyrajareddy

ASKER

Hi mrblue,

Thanks for your reply.

I cound't test the code in your last post. I think you are getting an interface pointer that provides access to the scripting object. I will try to access the document object model by using scripting object.

But I solved the problem by using an other way.

I kept an Iframe in the HTML loaded by ShowModalDialog. The src of Iframe is another html page which has only <object> tab. Now I am able to retrive IWebBrowser2 interface pointer.