Update specs/StatusBarMessage.md

Co-authored-by: Raymond Chen <oldnewthing@users.noreply.github.com>

Author: Tochibee

specs/StatusBarMessage.md

@@ -9,23 +9,27 @@ The browser has a Status bar that displays text when hovering over a link, or pe
 developers are able to opt in to disable showing the status bar through the browser 
 settings.
 
-Developers would also like to be able to opt in to intercept the messages which would 
-normally be displayed by the Status bar, and show it using thier own custom UI. 
+Developers would also like to be able to opt in to intercept the text which would 
+normally be displayed by the Status bar, and show it using their own custom UI. 
 # Description
 We propose a new event for WebView2 that would allow developers to 
 listen for Status bar updates which are triggered by activity on the WebView, and then handle those updates however they want in their applications.
 
-Developers will be able to register an event handler for changes to the status bar message.
+Developers will be able to register an event handler for changes to the status bar text.
 # Examples
-## Win32 C++ Registering a listener for status bar message changes
+## Win32 C++ Registering a listener for status bar text changes
 ```
-CHECK_FAILURE(m_webView->add_StatusBarMessageChanged(
-    Microsoft::WRL::Callback<ICoreWebView2StatusBarMessageChangedEventHandler>(
-    [this](ICoreWebView2* sender, IUnknown* args) -> HRESULT
+CHECK_FAILURE(m_webView->add_StatusBarTextChanged(
+    Microsoft::WRL::Callback<ICoreWebView2StatusBarTextChangedEventHandler>(
+    [this](ICoreWebView2* sender, ICoreWebView2StatusBarTextChangedEventArgs* args) -> HRESULT
     {
+
+        Microsoft::WRL::ComPtr<ICoreWebView2_5> webview5;
+        CHECK_FAILURE(sender->QueryInterface(IID_PPV_ARGS(&webview5)));
+        
+        wil::unique_cotaskmem_string value;
+        CHECK_FAILURE(webview5->get_StatusBarText(&value));
         
-        LPWSTR value;
-        CHECK_FAILURE(sender->get_StatusBarMessage(&value));
         if (wcslen(value) != 0)
         {
 
@@ -38,13 +42,13 @@ CHECK_FAILURE(m_webView->add_StatusBarMessageChanged(
         return S_OK;
     }
 ).Get(),
-&m_statusBarMessageChangedToken));
+&m_statusBarTextChangedToken));
 ```
-## .NET / WinRT Registering a listener for status bar message changes
+## .NET / WinRT Registering a listener for status bar text changes
 ```
-webView.CoreWebView2.StatusBarMessageChanged += (CoreWebView2 sender, Object arg) =>
+webView.CoreWebView2.StatusBarTextChanged += (CoreWebView2 sender, Object arg) =>
 {
-    string value = sender.statusBarMessage;
+    string value = sender.StatusBarText;
     // Handle status bar text in value
     if (value.Length != 0) {
         statusBar.show(value);
@@ -59,41 +63,47 @@ See [API Details](#api-details) Section below for API reference
 # API Details
 ## Win32 C++
 ```
-/// Interface for the status bar message changed event handler
+/// Interface for the status bar text changed event handler
 [uuid(85c8b75a-ceac-11eb-b8bc-0242ac130003), object, pointer_default(unique)]
-interface ICoreWebView2StatusBarMessageChangedEventHandler : IUnknown {
+interface ICoreWebView2StatusBarTextChangedEventHandler : IUnknown {
   /// Called to provide the implementer with the event args for the
   /// corresponding event.
   HRESULT Invoke(
       [in] ICoreWebView2* sender,
-      [in] IUnknown* args);
+      [in] ICoreWebView2StatusBarTextChangedEventArgs* args);
+}
+
+/// Interface for status bar text change event args
+[uuid(2B9CAB1C-BE29-4FC8-BFDD-20AF170ACA7F), object, pointer_default(unique)]
+interface ICoreWebView2StatusBarTextChangedEventArgs : IUnknown {
+
 }
 
 [uuid(b2c01782-ceaf-11eb-b8bc-0242ac130003), object, pointer_default(unique)]
 interface ICoreWebView2_5 : ICoreWebView2_4 {
-  /// Add an event handler for the `StatusBarMessageChanged` event.
-  /// `StatusBarMessageChanged` runs when the WebView statusbar content changes
+  /// Add an event handler for the `StatusBarTextChanged` event.
+  /// `StatusBarTextChanged` runs when the WebView statusbar content changes
   /// status bar
-  HRESULT add_StatusBarMessageChanged(
-        [in] ICoreWebView2StatusBarMessageChangedEventHandler* eventHandler,
+  HRESULT add_StatusBarTextChanged(
+        [in] ICoreWebView2StatusBarTextChangedEventHandler* eventHandler,
         [out] EventRegistrationToken* token);
 
-  /// Removing the event handler for `StatusBarMessageChanged` event
-  HRESULT remove_StatusBarMessageChanged(
+  /// Removing the event handler for `StatusBarTextChanged` event
+  HRESULT remove_StatusBarTextChanged(
       [in] EventRegistrationToken token);
 
-  /// used to access the current value of the status bar message
-  [propget] HRESULT StatusBarMessage([out, retval] LPWSTR* value);
+  /// used to access the current value of the status bar text
+  [propget] HRESULT StatusBarText([out, retval] LPWSTR* value);
 }
 ```
 ## .Net/ WinRT
 ```
 namespace Microsoft.Web.WebView2.Core {
 
-/// Interface for the status bar message changed event handler
+/// Interface for the status bar text changed event handler
     runtimeclass CoreWebView2 {
-        event Windows.Foundation.TypedEventHandler<CoreWebView2, Object> StatusBarMessageChanged;
-        string StatusBarMessage {get;};
+        event Windows.Foundation.TypedEventHandler<CoreWebView2, CoreWebView2StatusBarTextChangedEventArgs> StatusBarTextChanged;
+        string StatusBarText {get;};
     }
 }
 ```