.NET WebBrowser 控件 - 获取活动上下文菜单

Question

我有 WebBrowser 控件，我希望当单击右键并且上下文菜单出现时获取该上下文菜单的句柄。

这可能吗？

Answer 1

是的。

您可以参考以下代码。

    //this code assumes WebBrowser object(_webBrowser) is already initiated
    //in class scope.

    //this method is needed to execute when form is loaded.
    //Register it to load event
    private void Loaded(object sender, RoutedEventArgs e)
    {
        _webBrowser.LoadCompleted += _webBrowser_LoadCompleted;
    }

    private HTMLDocumentEvents2_Event _docEvent;

    private void _webBrowser_LoadCompleted(object sender, NavigationEventArgs e)
    {
        if (_docEvent != null)
        {
            _docEvent.oncontextmenu -= new HTMLDocumentEvents2_oncontextmenuEventHandler(_docEvent_oncontextmenu);
        }
        if (_webBrowser.Document != null)
        {
            _docEvent = (HTMLDocumentEvents2_Event)_webBrowser.Document;
            _docEvent.oncontextmenu += new HTMLDocumentEvents2_oncontextmenuEventHandler(_docEvent_oncontextmenu);
        }
    }

    bool _docEvent_oncontextmenu(IHTMLEventObj pEvtObj)
    {
        //do something and determine you want whether context menu shows or not
        //if you want to shows context menu, you'll need to return true.
        return true;
    }

Answer 2

如果您只想显示自己的 contextMenu。我在这里发布了一个适用于 winforms WebBrowser 控件的解决方案：

如何覆盖右键单击 winforms WebBrowser 时出现的上下文菜单控制？