Tag Archives: Trident (layout engine)

Howto: Ignoring web browser certificate errors in a webbrowser host

The webbrowser queries host services via IServiceProvider implemented on the ActiveX host. One of the services is IHttpSecurity, which can be used to override the certificate problem dialog. Security warning: ignoring security problems can compromise your application. IHttpSecurity is derived from IWindowForBindingUI, … Continue reading

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Posted in C#, MFC, Microsoft, Visual Studio, Webbrowser control | Tagged , , , , , | 15 Comments

Howto: reset IE security zone settings programmatically

Internet Explorer 7 introduced the IInternetZoneManagerEx2 interface, which has a FixUnsecureSettings method to reset all security zone settings. Like all other IInternetZoneManager* interfaces, you can query this interface from the internet zone manager object: IInternetZoneManagerEx2* pzoneManager=NULL; HRESULT hr=CoCreateInstance(CLSID_InternetZoneManager ,NULL,CLSCTX_INPROC_SERVER,IID_IInternetZoneManagerEx2,(LPVOID*)&pzoneManager); if(hr==S_OK && pzoneManager!=NULL) { … Continue reading

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Posted in enmsdn, Microsoft, Visual C++, Visual Studio, Webbrowser control | Tagged , , | 1 Comment

Application crash when forcing IE8 rendering mode in webbrowser host

User stephench is reporting that when setting webbrowser rendering mode to IE8 via FEATURE_BROWSER_EMULATION, the app would crash.  The web site crashes IE8 too, but IE8 is able to recover and automatically switch to IE7 mode, while a webbrowser host … Continue reading

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Posted in enmsdn, Microsoft Foundation Class Library, Visual C++ | Tagged , , | Leave a comment

How to force popup window to navigate in the same window in a webbrowser control

When clicking on an link that targets a new window,  the default behavior of a webbrowser control host application is to open a new window in Internet Explorer. User ben_lai wants to know how to handle the click and navigate … Continue reading

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Posted in enmsdn, Microsoft, Visual C++, Visual Studio, Webbrowser control | Tagged , , , , , , , | 3 Comments

Intercept the download dialog in webbrowser control

User rsd102 looks already find the solution to his question when he posted the question to CSDN, except for one missing piece. The sample he found is for overriding the global download manager, and what he need is a process … Continue reading

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Make the webbrowser control styled the same way as the hosting application

User wtx_sonery wants to know whether it is possible to style the webbrowser control with the rest of the application. The answer is yes, you can implement IDocHostUIHandler’s GetHostInfo method and return DOCHOSTUIFLAG_THEME in the host flags. IDocHostUIHandler is already … Continue reading

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Posted in Active Template Library, enmsdn, Microsoft, Microsoft Foundation Class Library, Visual C++ | Tagged , , , , , , , , , , , , | Leave a comment

How to change the user agent and download control flags in a webbrowser control host

User vnetvvv wants to know how to change the user agent string in a VB6 webbrowser control. The knowledge base article PRB: WebBrowser Control Clients Share Global Settings provides the necessary code for changing the user agent of the webbrowser … Continue reading

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Posted in Active Template Library, enmsdn, Microsoft, Visual C++, Visual Studio | Tagged , , | 1 Comment

How to disable navigation sound in webbrowser control

User kill211 does not like the click sound when he calls WebBrowser.Navigate. He wonders if there is a way to disable it without modifying HKEY_CURRENT_USER\AppEvents\Schemes\Apps\Explorer\Navigating, which has effect on other applications. Unfortunately, the API for disabling sound is introduced in … Continue reading

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Walkaround for Error : An add-on for this website failed to run. When opening Visual C++’s Add Variable Wizard after IE 8 is installed

Update: it looks like a lot of people are hitting this page by mistake. If you don’t write software for a living then this page is probably not for you. Download: https://jiangsheng.net/Documents/IE8AddZone.zip Prerequisite: Microsoft Visual C++ 2005 SP1 Redistributable Package … Continue reading

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Posted in enmsdn, Microsoft, Visual C++, Visual Studio | Tagged , , , , , , , , | 1 Comment

Error: Unable to cast COM object of type ‘mshtml.HTMLDocumentClass’ to interface type ‘ICustomDoc’

This operation failed because the QueryInterface call on the COM component for the interface with IID ‘{3050F3F0-98B5-11CF-BB82-00AA00BDCE0B}’ failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)). My first reaction was:”What the hell? HTMLDocumentClass is … Continue reading

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