如何检查我的 VS 2017 扩展中的工具 window 是否被隐藏

Question

我正在为 Visual Studio 2017 开发一个包含自定义 "toolwindow" 的扩展。此 "toolwindow" 包含 WPF control，其中 view model 订阅了 Workspace.WorkspaceChanged 和 EnvDTE.DTE.Events.WindowEvents.WindowActivated 事件。

我知道当 "toolwindow" 被用户关闭时，它实际上并没有被销毁，而是 "hidden"。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：

如何查看工具window是否被隐藏？
我可以 "close" 工具 window 这样它就会被销毁吗？

编辑：创建工具的代码window：

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，您可以继承自 IVsWindowFrameNotify3 and in the OnShow method check for fShow == (int)__FRAMESHOW.FRAMESHOW_WinClosed。

Answer 2

只是为了添加到@Sergey Vlasov 的回答中——我发现了第二种方法，如果 window 是 hidden/shown，就会收到通知。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;
}

如何检查我的 VS 2017 扩展中的工具 window 是否被隐藏

How to check that the tool window in my VS 2017 extension for is hidden

c#

visual-studio-2017

vsix

visual-studio-sdk

vssdk