How can simulate button clicking in multiple threads environment？

[gzcjun]

I'm trying to simulating a button containing in a form.By reading some reference articles,I'd seen that most of them suggested to use webbrowser control,and then acquire htmldocument2 dispatch to get IHTMLInputButtonElement interface.But I'm now doing real time system,it demanded to get infos as soon as possibly,so I must use multiple threads to solve it.From some articles,I heard that webbrowser control cannot be used in multiple threads environment.So what's the better way?