Initial commit

Author: 0x5bfa

src/Files.App.CsWin32/NativeMethods.txt

@@ -28,9 +28,7 @@ HWND
 LRESULT
 WPARAM
 LPARAM
-WM_LBUTTONUP
-WM_RBUTTONUP
-WM_DESTROY
+WM_*
 SetForegroundWindow
 GetForegroundWindow
 GetCurrentThreadId
@@ -173,3 +171,4 @@ FSCTL_LOCK_VOLUME
 FILE_FILE_COMPRESSION
 WM_WINDOWPOSCHANGING
 WINDOWPOS
+UnregisterClass

src/Files.App.CsWin32/Windows.Win32.ComPtr.cs

@@ -27,6 +27,14 @@ public ComPtr(T* ptr)
 				((IUnknown*)ptr)->AddRef();
 		}
 
+		public void Attach(T* other)
+		{
+			if (_ptr is not null)
+				((IUnknown*)_ptr)->Release();
+
+			_ptr = other;
+		}
+
 		[MethodImpl(MethodImplOptions.AggressiveInlining)]
 		public readonly T* Get()
 		{

src/Files.App.CsWin32/Windows.Win32.Extras.cs

@@ -2,6 +2,7 @@
 // Licensed under the MIT License.
 
 using System.Runtime.InteropServices;
+using System.Runtime.InteropServices.Marshalling;
 using Windows.Win32.Foundation;
 using Windows.Win32.UI.WindowsAndMessaging;
 
@@ -37,4 +38,14 @@ public static unsafe nint SetWindowLongPtr(HWND hWnd, WINDOW_LONG_PTR_INDEX nInd
 				: _SetWindowLongPtr(hWnd, (int)nIndex, dwNewLong);
 		}
 	}
+
+	namespace Extras
+	{
+		[GeneratedComInterface, Guid("EACDD04C-117E-4E17-88F4-D1B12B0E3D89"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+		public partial interface IDCompositionTarget
+		{
+			[PreserveSig]
+			int SetRoot(nint visual);
+		}
+	}
 }

src/Files.App/UserControls/FilePreviews/ShellPreview.xaml.cs

@@ -1,8 +1,11 @@
+// Copyright (c) Files Community
+// Licensed under the MIT License.
+
 using Files.App.ViewModels.Previews;
 using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
-using Vanara.PInvoke;
 using Windows.Foundation;
+using Windows.Win32.Foundation;
 
 namespace Files.App.UserControls.FilePreviews
 {
@@ -13,13 +16,15 @@ public sealed partial class ShellPreview : UserControl
 		public ShellPreview(ShellPreviewViewModel model)
 		{
 			ViewModel = model;
-			this.InitializeComponent();
+
+			InitializeComponent();
 		}
 
 		private void PreviewHost_Loaded(object sender, RoutedEventArgs e)
 		{
 			ViewModel.LoadPreview(contentPresenter);
 			ViewModel.SizeChanged(GetPreviewSize());
+
 			if (XamlRoot.Content is FrameworkElement element)
 			{
 				element.SizeChanged += PreviewHost_SizeChanged;
@@ -38,13 +43,12 @@ private RECT GetPreviewSize()
 			var physicalSize = contentPresenter.RenderSize;
 			var physicalPos = source.TransformPoint(new Point(0, 0));
 			var scale = XamlRoot.RasterizationScale;
-			var result = new RECT
-			{
-				X = (int)(physicalPos.X * scale + 0.5),
-				Y = (int)(physicalPos.Y * scale + 0.5),
-				Width = (int)(physicalSize.Width * scale + 0.5),
-				Height = (int)(physicalSize.Height * scale + 0.5)
-			};
+			var result = RECT.FromXYWH(
+				(int)(physicalPos.X * scale + 0.5),
+				(int)(physicalPos.Y * scale + 0.5),
+				(int)(physicalSize.Width * scale + 0.5),
+				(int)(physicalSize.Height * scale + 0.5));
+
 			return result;
 		}
 
@@ -55,6 +59,7 @@ private void PreviewHost_Unloaded(object sender, RoutedEventArgs e)
 				element.SizeChanged -= PreviewHost_SizeChanged;
 				element.PointerEntered -= PreviewHost_PointerEntered;
 			}
+
 			ViewModel.UnloadPreview();
 		}