InternetSecurityManager cause chtmlview destructor exception

youqiang wu 21

see the below code:

BOOL CHTMLView::CreateControlSite(COleControlContainer* pContainer,   
	COleControlSite** ppSite, UINT  nID , REFCLSID  clsid )  
{     
	ASSERT(ppSite != NULL);  
	*ppSite = new CCustomControlSite(pContainer);  
	return TRUE;;  
}  

STDMETHODIMP CCustomControlSite::XServiceProvider  
::QueryService(REFGUID guidService,  
	REFIID riid,  
	void** ppvObject)  
{  
  
	if (guidService == SID_SInternetSecurityManager &&  
		riid == IID_IInternetSecurityManager)  
	{  
		METHOD_PROLOGUE(CCustomControlSite, ServiceProvider)  
			HRESULT hr = (HRESULT)pThis->ExternalQueryInterface(&riid, ppvObject);  
		return hr;  
	}  
	else  
	{  
		*ppvObject = NULL;  
  
	}  
	return E_NOINTERFACE;  
}

open some url and close , it will cause the bellow isssue:

How to locate or fix the problem??

Jeanine Zhang-MSFT 9,181 Reputation points Microsoft Vendor

2020-11-24T07:15:29.147+00:00

@youqiang wu

As far as I'm concerned, it would be some object is not being released. I suggest you could try to use "Smart Pointers" in your component to avoid reference leaks.
youqiang wu 21 Reputation points

2020-11-24T07:48:52.337+00:00

The point is that I don’t know which object has not been released;
At the same time, if I don’t customize the implementation of Internet Security Manager, the problem will not occur.

It should be noted that there is a request waiting on the web page; if you do not wait, there will be no such problem;
Viorel 112.1K Reputation points

2020-11-24T08:14:27.683+00:00

It should be noted that there is a request waiting on the web page; if you do not wait, there will be no such problem;

Maybe you should interrupt the request using CHtmlView::Stop( )? Handle some event that happens when the document, window or application is closed.
youqiang wu 21 Reputation points

2020-11-24T08:37:24.083+00:00

it does not work!
I execute "CHtmlView::Stop( )" in the htmlview ondestory event;

When chtmlview is destroyed or deconstructed, will it automatically close such blocking or waiting requests?
Jeanine Zhang-MSFT 9,181 Reputation points Microsoft Vendor

2020-11-25T03:09:44.36+00:00

@youqiang wu

When chtmlview is destroyed or deconstructed, will it automatically close such blocking or waiting requests?

CHtmlView::OnDestroy does nothing.Other MFC CView based classes call their base class OnDestroy after doing their OnDestroy work. However, CHtmlView's OnDestroy does not. And I suggest you could call SetActiveView (NULL) manually by yourself when necessary.
youqiang wu 21 Reputation points

2020-11-25T03:30:59.403+00:00

Thanks!

When chtmlview is deconstructed, isn't it normal to release the objects contained in the webpage?

From the triggered assertion, it should be caused by the blocking object contained in the web page not being released;

Finally, chtmlview seems to have no member function SetActiveView; I don’t know how to call it

The current temporary solution is that shield the realization of Internet Security Manager;