如何检查我的 VS 2017 扩展中的工具窗口是否隐藏

Question

我正在为 Visual Studio 2017 开发一个扩展，其中包含自定义“toolwindow”。此“工具窗口”包含WPF control订阅view model了Workspace.WorkspaceChanged和EnvDTE.DTE.Events.WindowEvents.WindowActivated事件。我知道当用户关闭“toolwindow”时，它实际上并没有被破坏，而是“隐藏”了。但是，它仍然对我的事件做出反应。所以，我想知道两个问题的答案：如何检查工具窗口是否被隐藏？我可以“关闭”工具窗口以便将其销毁吗？编辑：创建工具窗口的代码：protected virtual TWindow OpenToolWindow(){        ThreadHelper.ThrowIfNotOnUIThread();        // Get the instance number 0 of this tool window. This window is single instance so this instance        // is actually the only one.        // The last flag is set to true so that if the tool window does not exists it will be created.        ToolWindowPane window = Package.FindToolWindow(typeof(TWindow), id: 0, create: true);        if (window?.Frame == null)        {            throw new NotSupportedException("Cannot create tool window");        }        IVsWindowFrame windowFrame = (IVsWindowFrame)window.Frame;        Microsoft.VisualStudio.ErrorHandler.ThrowOnFailure(windowFrame.Show());        return window as TWindow;}

Answer 1

要检测工具窗口何时关闭，您可以从IVsWindowFrameNotify3继承它并在 OnShow 方法中检查 fShow == (int) __FRAMESHOW.FRAMESHOW_WinClosed。

Answer 2

只是为了添加到@Sergey Vlasov 的回答 - 我发现了第二种方法，如果窗口被隐藏/显示，则会收到通知。这是我的 WPF 控件视图模型中的代码。

EnvDTE.DTE dte = MyVSPackage.Instance.GetService<EnvDTE.DTE>();

// _visibilityEvents is a private field. 

// There is a recommendation to store VS events objects in a field 

// to prevent them from being GCed

_visibilityEvents = (dte?.Events as EnvDTE80.Events2)?.WindowVisibilityEvents;

if (_visibilityEvents != null)

{

    _visibilityEvents.WindowShowing += VisibilityEvents_WindowShowing;

    _visibilityEvents.WindowHiding += VisibilityEvents_WindowHiding;

}