IE工具栏扩展 就是如何使IE扩展组件可以响应事件。 在自己的程序中使用过WebBrowser控件的朋友都知道，WebBrowser控件定义了诸如BeforeNavigate、DownloadComplete 等事件，我们可以通过编写事件处理代码实现对WebBrowser控件的操作。那么如何实现对IE的事件响应和处理呢？同建立IE面板一样。我们需要建立一个实现IObjectWithSite接口的COM组件，不同的是，我们还需要实现IDispatch接口，在IObjectWithSite接口的SetSite方法中获得IE的WebBrowser接口并建立自身与WebBrowser的连接，然后如果在IE的Webbrowser对象中发生什么事件的话，那么IE就会回调连接的IDispatch接口的Invoke方法。我们通过在Invoke方法中编写代码就可以获得IE事件了。这个利用的是COM编程的回调接口原理。-IE toolbar expansion is how to make IE components can be extended to respond incident. In their own procedures used WebBrowser Control friends all know, WebBrowser control such as the definition BeforeNavigate, DownloadComplete incidents, we can handle the matter through the preparation of code to achieve WebBrowser control operation. So how to achieve the right IE incident response and handling? IE with the establishment of the same panel. We need to build an interface to achieve IObjectWithSite COM different is, we also need to implement the IDispatch interface, the interface SetSite IObjectWithSite method was IE WebBrowser interface and establish their own connections with the WebBrowser, then if the IE object pda.en.wapedia.org what happens incident, then IE the pullback would IDispatc