问题
I use TwebBrowser in a D7 app. The question is: When I upgrade my IE this component will use the new IE to render the pages?
回答1:
Yes.
TWebBrowserinside of the SHDocVw unit internally creates a IWebBrowser2OLE control.
And this interface uses the the installed Internet Explorer (as described here).
回答2:
Yes it does.
When it's created, it requests the system for an instance of the object that is currently configured to implement IWebBrowser2 ({0002DF01-0000-0000-C000-000000000046}) which will point to the version of IE currently installed.
Not that there is a lot of choice: you cannot have several versions of IE installed side-by-side.
it doesn't mean it will behave exactly the same between versions, though.
来源：https://stackoverflow.com/questions/2467077/does-twebbrowser-updates-with-ie