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The Backyard - HowToSetSiteInfoToMsXml Diff

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!!on IActiveScript::SetScriptSite
You must retrieve IServiceProvider from given IActiveScriptSite by QI.

Then, you can retrieve IInternetHostSecurityManger from ServiceProvider.

Save both interfaces.

IServiceProvider* pProv = NULL;
HRESULT hr = m_pSite->QueryInterface(IID_IServiceProvider, (void**)&pProv);
if (hr == S_OK)
     IInternetHostSecurityManager* pScm = NULL;
     hr = pProv->QueryService(SID_SInternetHostSecurityManager, IID_IInternetHostSecurityManager, (void**)&pScm);
     if (hr == S_OK)
         m_pScM = pScm;
     m_pProv = pProv;

!!Everytime when you instantiate the COM componets

If you can bind GUID_CUSTOM_CONFIRMOBJECTSAFETY, then you must call IInternetHostSecurityManager::QueryCustomPolicy, or at least you must exchange IObjectSafety informations from the component.

If you decide to keep the component alive, then set IInternetHostSecurityManager into in the component using IObjectWithSite if the component can handle it.has the interface.

The steps are
(1)retrieve IObjectWithSite from the component's IDispatch by QI.
(2)If you got the interface, then call IObjectWithSite::SetSite with previously saved IInternetHostSecurityManager.

IObjectWithSite* pSite = NULL;
HRESULT hr = pUnk->QueryInterface(IID_IObjectWithSite, (void**)&pSite);
if (hr == S_OK)

If you didn't set IInternetHostSecurityManager, then MSXML can't use urlmon to download the file given by load method.
So the result will be 80070005 (E_ACCESSDENIED).