fix comments

Author: Denghui Yu

specs/MultiProfile.md

@@ -178,10 +178,24 @@ HRESULT AppWindow::DeleteProfile(ICoreWebView2* webView2)
 
 void AppWindow::RegisterEventHandlers()
 {
-    CHECK_FAILURE(m_webView->add_ProfileDeleted(
-        Microsoft::WRL::Callback<ICoreWebView2ProfileDeletedEventHandler>(
-            [this](ICoreWebView2_9* sender, IUnknown* args)  {
-                CloseAppWindow();
+    CHECK_FAILURE(m_webView->add_Closed(
+        Microsoft::WRL::Callback<ICoreWebView2ClosedEventHandler>(
+            [this](ICoreWebView2_20* sender, ICoreWebView2EventArgs* args)
+            {
+                COREWEBVIEW2_CLOSED_REASON reason;
+                CHECK_FAILURE(args->get_Reason(&reason));
+                if (reason == COREWEBVIEW2_CLOSED_REASON::COREWEBVIEW2_CLOSED_REASON_PROFILE_DELETED)
+                {
+                    RunAsync( [this]()
+                    {
+                        std::wstring message =
+                            L"The webview2 has been closed and the reason is profile "
+                            L"has been marked as deleted.";
+                        MessageBox(
+                            m_mainWindow, message.c_str(), L"webview2 closed", MB_OK);
+                        CloseAppWindow();
+                    });
+                }
                 return S_OK;
             }).Get(), nullptr));
 }
@@ -260,12 +274,20 @@ public DeleteProfile(CoreWebView2Controller controller)
 
 void WebView_CoreWebView2InitializationCompleted(object sender, CoreWebView2InitializationCompletedEventArgs e)
 {
-    webView.CoreWebView2.ProfileDeleted += CoreWebView2_ProfileDeleted;
+    webView.CoreWebView2.Closed += CoreWebView2_Closed;
 }
 
-private void CoreWebView2_ProfileDeleted(object sender, object e)
+private void CoreWebView2_Closed(object sender, CoreWebView2ClosedEventArgs e)
 {
-    Close();
+    if (e.Reason == CoreWebView2ClosedReason.ProfileDeleted)
+    {
+        this.Dispatcher.InvokeAsync(() =>
+        {
+            String message = "The webview2 has been closed and the reason is profile has been marked as deleted";
+            MessageBox.Show(message);
+            Close();
+        });
+    }
 }
 ```
 
@@ -277,9 +299,13 @@ private void CoreWebView2_ProfileDeleted(object sender, object e)
 interface ICoreWebView2ControllerOptions;
 interface ICoreWebView2Environment5;
 interface ICoreWebView2_7;
+interface ICoreWebView2_9;
 interface ICoreWebView2Profile;
 interface ICoreWebView2Profile2;
 interface ICoreWebView2Profile3;
+interface ICoreWebView2Profile4;
+interface ICoreWebView2ClosedEventHandler;
+interface ICoreWebView2ClosedEventArgs;
 
 /// This interface is used to manage profile options that created by 'CreateCoreWebView2ControllerOptions'.
 [uuid(C2669A3A-03A9-45E9-97EA-03CD55E5DC03), object, pointer_default(unique)]
@@ -376,15 +402,12 @@ interface ICoreWebView2Profile2 : ICoreWebView2Profile {
 [uuid(2765B8BD-7C57-4B76-B8AA-1EC940FE92CC), object, pointer_default(unique)]
 interface ICoreWebView2Profile4 : IUnknown {
   /// After the API is called, the profile will be marked for deletion. The
-  /// local profile’s directory will be tried to delete at browser process
+  /// local profile's directory will be tried to delete at browser process
   /// exit, if fail to delete, it will recursively try to delete at next
   /// browser process start until successful.
-  /// The corresponding user's `ProfileDeleted` event handle function will
-  /// be triggered. After the function is triggered, continuing to use the
-  /// profile or its corresponding webviews is an undefined behavior.
-  /// For each WebView of the same profile, the WebView will be auto closed.
-  /// If the user has registered an event handler for ProfileDeleted event,
-  /// the event handle will be invoked before WebView is closed.
+  /// The corresponding webview2s will be auto closed and its Closed event
+  /// handle function will be triggered with the reason is 
+  /// COREWEBVIEW2_CLOSED_REASON.COREWEBVIEW2_CLOSED_REASON_PROFILE_DELETED.
   /// If create a new profile with the same name as the profile that has been
   /// marked as deleted will be failure with the HRESULT:ERROR_INVALID_STATE
   /// (0x8007139FL).
@@ -393,17 +416,43 @@ interface ICoreWebView2Profile4 : IUnknown {
 
 [uuid(cc39bea3-f6f8-471b-919f-fa253e2fff03), object, pointer_default(unique)]
 interface ICoreWebView2_9 : IUnknown {
-  /// The `ProfileDeleted` event is raised when its corresponding Profile's
-  /// Delete API is called. When this event has been raised, continue to use
-  /// the profile or its corresponding webviews is an undefined behavior.
-  HRESULT add_ProfileDeleted(
-      [in] ICoreWebView2ProfileDeletedEventHandler* eventHandler,
+  /// Add an event handler for the `Closed` event. `Closed` enent handle runs
+  /// when the webview2 is closed passivly. When this event is raised, the 
+  /// webview2 cannot be used anymore.
+  HRESULT add_Closed(
+      [in] ICoreWebView2ClosedEventHandler* eventHandler,
       [out] EventRegistrationToken* token);
 
-  /// Remove an event handler previously added with `add_ProfileDeleted`.
-  HRESULT remove_ProfileDeleted(
+  /// Remove an event handler previously added with `add_Closed`.
+  HRESULT remove_Closed(
       [in] EventRegistrationToken token);
 }
+
+/// The reason of webview2 closed.
+[v1_enum]
+typedef enum COREWEBVIEW2_CLOSED_REASON {
+  /// Indicates that the reason of webview2 closed is its corresponding 
+  /// Profile has been or marked as deleted.
+  COREWEBVIEW2_CLOSED_REASON_PROFILE_DELETED,
+} COREWEBVIEW2_CLOSED_REASON;
+
+/// Receives the webview2 `Closed` event.
+[uuid(970BB7E0-A257-4A76-BE15-5BDEB00B5673), object, pointer_default(unique)]
+interface ICoreWebView2ClosedEventHandler : IUnknown {
+  /// Called to provide the implementer with the event args for the
+  /// corresponding event.
+  HRESULT Invoke([in] ICoreWebView2_20* sender,
+      [in] ICoreWebView2ClosedEventArgs* args);
+}
+
+/// This is the event args interface for webview2 `Closed` event handle.
+[uuid(0e1730c1-03df-4ad2-b847-be4d63adf777), object, pointer_default(unique)]
+interface ICoreWebView2ClosedEventArgs : IUnknown {
+  /// webview2 closed reason.
+  [propget] HRESULT Reason([out, retval]
+      COREWEBVIEW2_CLOSED_REASON* value);
+}
+
 ```
 
 ## .NET and WinRT
@@ -447,9 +496,19 @@ namespace Microsoft.Web.WebView2.Core
 
         [interface_name("Microsoft.Web.WebView2.Core.ICoreWebView2_9")]
         {
-            event Windows.Foundation.TypedEventHandler<CoreWebView2, Object> ProfileDeleted;
+            event Windows.Foundation.TypedEventHandler<CoreWebView2, CoreWebView2ClosedEventArgs> Closed;
         }
     }
+
+    enum CoreWebView2ClosedReason
+    {
+        ProfileDeleted = 0,
+    };
+
+    runtimeclass CoreWebView2ClosedEventArgs
+    {
+        CoreWebView2ClosedReason Reason { get; };
+    }
 
     runtimeclass CoreWebView2Profile
     {