如何通过VSPackage取消ToolWindowPane或Visual Studio IDE关闭操作？

我有一个VSPackage ，其中包含一个包含表单数据的可停靠工具窗口。 如果此表单中有未保存的更改，我想取消关闭工具窗口和Visual Studio IDE，如果用户在关闭前单击取消保存更改。 我可以在关闭时执行保存测试，但是我没有看到任何事件处理程序方法或其他选项来实际取消关闭。

这是包装中的一些模糊：

  private DTE2 _applicationObject = null; ///-------------------------------------------------------------------------------- /// 
This property gets the visual studio IDE application object.
 ///-------------------------------------------------------------------------------- public DTE2 ApplicationObject { get { if (_applicationObject == null) { // Get an instance of the currently running Visual Studio IDE DTE dte = (DTE)GetService(typeof(DTE)); _applicationObject = dte as DTE2; } return _applicationObject; } } ///-------------------------------------------------------------------------------- /// 
 /// Initialization of the package; this method is called right after the package is sited, so this is the place /// where you can put all the initilaization code that rely on services provided by VisualStudio. /// 
 ///-------------------------------------------------------------------------------- protected override void Initialize() { Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "Entering Initialize() of: {0}", this.ToString())); base.Initialize(); // add the event handlers if (ApplicationObject != null) { // wire up window events PackageWindowEvents = (WindowEvents)ApplicationObject.Events.get_WindowEvents(null); PackageWindowEvents.WindowClosing += new _dispWindowEvents_WindowClosingEventHandler(PackageWindowEvents_WindowClosing); // wire up solution events PackageSolutionEvents = ApplicationObject.Events.SolutionEvents; PackageSolutionEvents.Opened += new _dispSolutionEvents_OpenedEventHandler(CheckOpenCurrentSolution); // wire up DTE events PackageDTEEvents = ApplicationObject.Events.DTEEvents; PackageDTEEvents.OnBeginShutdown += new _dispDTEEvents_OnBeginShutdownEventHandler(HandleVisualStudioShutdown); } } void PackageWindowEvents_WindowClosing(Window window) { // handle save/cancel scenarios } 

还有一些来自ToolWindowPane实现IVsWindowFrameNotify3 ：

  protected override void OnClose() { base.OnClose(); } public int OnClose(ref uint pgrfSaveOptions) { return (int)__FRAMECLOSE.FRAMECLOSE_PromptSave; } 

OnClose和WindowClosing方法在预期时触发，但我找不到取消关闭的方法。 我错过了什么？ 取消收盘是否需要不同的活动？

Answer 1

为了完整起见，有一种有用的方法可以通过工具窗口取消关闭（由msdn论坛上的用户Chicobo提供，并在此处重复）。

1. 在ToolWindowPane类中，实现IVsWindowFrameNotify2接口，该接口提供OnClose方法。

2. 要取消窗口关闭，请考虑使用：

    public int OnClose(ref uint pgrfSaveOptions) { // Check if your content is dirty here, then // Prompt a dialog MessageBoxResult res = MessageBox.Show("This Document has been modified. Do you want to save the changes ?", "Unsaved changes", MessageBoxButton.YesNoCancel, MessageBoxImage.Warning); // If the users wants to save if (res == MessageBoxResult.Yes) { // Handle with your "save method here" } if (res == MessageBoxResult.Cancel) { // If "cancel" is clicked, abort the close return VSConstants.E_ABORT; } // Else, exit return VSConstants.S_OK; } 

Answer 2

为了完成上一个答案，以下代码片段针对问题的未解答部分，该部分是关于如何防止VsPackage中的Visual Studio IDE的关闭操作：

  protected override int QueryClose(out bool pfCanClose) { pfCanClose = false; return VSConstants.S_OK; } 

在包类中使用上面的代码。