Fix issue with Offset in Windows App SDK for Window Chrome in Input I…

…njection Tests

common/CommunityToolkit.Labs.Tests.Shared/App.xaml.cs

@@ -26,6 +26,7 @@
 using Microsoft.UI.Xaml.Media;
 using Microsoft.UI.Xaml.Navigation;
 using Microsoft.VisualStudio.TestTools.UnitTesting.AppContainer;
+using System.Runtime.InteropServices;
 #endif
 
 namespace CommunityToolkit.Labs.Tests;
@@ -40,6 +41,22 @@ public sealed partial class App : Application
 #if WINAPPSDK
     private static Microsoft.UI.Xaml.Window currentWindow = Microsoft.UI.Xaml.Window.Current;
 
+
+    [StructLayout(LayoutKind.Sequential)]
+    public struct RECT
+    {
+        public int Left;        // x position of upper-left corner
+        public int Top;         // y position of upper-left corner
+        public int Right;       // x position of lower-right corner
+        public int Bottom;      // y position of lower-right corner
+    }
+
+    [DllImport("user32.dll")]
+    static extern bool GetClientRect(IntPtr hWnd, out RECT lpRect);
+
+    [DllImport("user32", ExactSpelling = true, SetLastError = true)]
+    internal static extern int MapWindowPoints(IntPtr hWndFrom, IntPtr hWndTo, [In, Out] ref RECT rect, [MarshalAs(UnmanagedType.U4)] int cPoints);
+
     private static AppWindow GetAppWindow(Microsoft.UI.Xaml.Window window)
     {
         // From: https://docs.microsoft.com/en-us/windows/apps/windows-app-sdk/windowing/windowing-overview#code-example
@@ -56,6 +73,22 @@ private static AppWindow GetAppWindow(Microsoft.UI.Xaml.Window window)
     public static Rect Bounds { get
         {
             var appWindow = GetAppWindow(currentWindow);
+
+            var hWnd = WinRT.Interop.WindowNative.GetWindowHandle(currentWindow);
+
+            // Get client area position
+            RECT ir = new RECT();
+            MapWindowPoints(hWnd, IntPtr.Zero, ref ir, 1);
+
+            RECT rct;
+
+            // And size
+            if (GetClientRect(hWnd, out rct))
+            {
+                return new Rect(ir.Left, ir.Top, rct.Right - rct.Left, rct.Bottom - rct.Top);
+            }
+
+            // AppWindow uses GetWindowRect which includes the chrome, not what we want... TODO: File bug currentWindow.Bounds should be the same between the two platforms. Should AppWindow also have Bounds?
             var position = appWindow.Position;
             var size = appWindow.Size;
             return new Rect(position.X, position.Y, size.Width, size.Height);

tests/Labs.Tests.WinAppSdk.props

@@ -15,6 +15,7 @@
   </ItemGroup>
 
   <PropertyGroup>
+    <IsTestProject>true</IsTestProject>
     <!-- Removed in 1.1+, see this bug: https://developercommunity.visualstudio.com/t/Windows-App-SDK-11-Unit-Tests-not-laun/10192460 -->
     <WindowsAppContainer>true</WindowsAppContainer>
   </PropertyGroup>