diff --git a/Mile.Xaml.Managed/Interop/ICoreWindowInterop.cs b/Mile.Xaml.Managed/Interop/ICoreWindowInterop.cs
index 2cc3b8d..f76dbd9 100644
--- a/Mile.Xaml.Managed/Interop/ICoreWindowInterop.cs
+++ b/Mile.Xaml.Managed/Interop/ICoreWindowInterop.cs
@@ -25,7 +25,10 @@ namespace Mile.Xaml.Interop
     [Guid("45D64A29-A63E-4CB6-B498-5781D298CB4F")]
     public partial interface ICoreWindowInterop
     {
+        // Original declaration: IntPtr WindowHandle { get; }
         IntPtr GetWindowHandle();
+
+        // Original declaration: bool MessageHandled { set; }
         void SetMessageHandled([MarshalAs(UnmanagedType.I1)]bool messageHandled);
     }
 }
diff --git a/Mile.Xaml.Managed/Interop/IDesktopWindowXamlSourceNative2.cs b/Mile.Xaml.Managed/Interop/IDesktopWindowXamlSourceNative2.cs
index a01610a..0d9137e 100644
--- a/Mile.Xaml.Managed/Interop/IDesktopWindowXamlSourceNative2.cs
+++ b/Mile.Xaml.Managed/Interop/IDesktopWindowXamlSourceNative2.cs
@@ -27,6 +27,7 @@ public partial interface IDesktopWindowXamlSourceNative2
     {
         void AttachToWindow(IntPtr parentWnd);
 
+        // Original declaration: IntPtr WindowHandle { get; }
         IntPtr GetWindowHandle();
 
         [return:MarshalAs(UnmanagedType.I1)]
diff --git a/Mile.Xaml.Managed/Interop/IWindowPrivate.cs b/Mile.Xaml.Managed/Interop/IWindowPrivate.cs
index 34a3ee9..21a3a7c 100644
--- a/Mile.Xaml.Managed/Interop/IWindowPrivate.cs
+++ b/Mile.Xaml.Managed/Interop/IWindowPrivate.cs
@@ -25,9 +25,12 @@ namespace Mile.Xaml.Interop
     [Guid("06636C29-5A17-458D-8EA2-2422D997A922")]
     public partial interface IWindowPrivate
     {
+        // IInspectable methods
         void GetIids(out int iidCount, out IntPtr iids);
         void GetRuntimeClassName(out IntPtr className);
         void GetTrustLevel(out int trustLevel);
+
+        // Original declaration: bool TransparentBackground { get; set; }
         [return: MarshalAs(UnmanagedType.I1)] bool GetTransparentBackground();
         void SetTransparentBackground([MarshalAs(UnmanagedType.I1)] bool transparentBackground);
     }