我正在为Visual Studio 2017开发一个包含自定义“工具窗口”的扩展。这个“工具窗口”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“工具窗口”被用户关闭时,它实际上并没有被破坏而是“隐藏”。但是,它仍然对我的事件作出反应。
所以,我想知道两个问题的答案:
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;
}
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。
只是为了添加@Sergey Vlasov的答案 - 我找到了第二种方法,如果窗口被隐藏/显示就会被通知。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;
}