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Webbrowser控件判断网页加载完毕的简单方法

来源：互联网 
Check if the IDispatch parameter of the DocumentComplete is the same as the IDispatch parameter of first NavigateComplete2 event. Since the first NavigateComplete2 is of the top-level frame and the last DocumentComplete is also of the top-level frame, doing a comparison in such a fashion will tell whether the page is done downloading. Check if the IDispatch parameter of the DocumentCo

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