From 51b5033d5048e9e9ec478d93d0a66aa6061d95ae Mon Sep 17 00:00:00 2001
From: 0x5BFA <62196528+0x5bfa@users.noreply.github.com>
Date: Mon, 29 Jun 2026 11:31:33 +0900
Subject: [PATCH] Update MainPage.xaml.cs

---
 src/Files.App/Views/MainPage.xaml.cs | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/Files.App/Views/MainPage.xaml.cs b/src/Files.App/Views/MainPage.xaml.cs
index 6930515eda5d..f4c5c2b8f2c0 100644
--- a/src/Files.App/Views/MainPage.xaml.cs
+++ b/src/Files.App/Views/MainPage.xaml.cs
@@ -15,6 +15,7 @@
 using Windows.Foundation.Metadata;
 using Windows.Graphics;
 using Windows.UI.Input;
+using Windows.Win32;
 using WinUIEx;
 using GridSplitter = Files.App.Controls.GridSplitter;
 using VirtualKey = Windows.System.VirtualKey;
@@ -32,8 +33,10 @@ public sealed partial class MainPage : Page
 		public MainPageViewModel ViewModel { get; }
 
 		private bool keyReleased = true;
+		private const int KEY_DOWN_MASK = 0x8000;
 
 		private DispatcherQueueTimer _updateDateDisplayTimer;
+		private InputNonClientPointerSource? _nonClientPointerSource;
 
 		private readonly Dictionary<TabBarItem, double> _sidebarScrollByTab = new();
 		private TabBarItem? _previousSidebarTab;
@@ -122,6 +125,15 @@ private int SetTitleBarDragRegion(InputNonClientPointerSource source, SizeInt32
 			return height;
 		}
 
+		private async void NonClientPointerSource_PointerPressed(InputNonClientPointerSource sender, NonClientPointerEventArgs args)
+		{
+			if (args.RegionKind is not NonClientRegionKind.Caption ||
+				(PInvoke.GetKeyState((int)VirtualKey.MiddleButton) & KEY_DOWN_MASK) == 0)
+				return;
+
+			await NavigationHelpers.AddNewTabAsync();
+		}
+
 		public async void TabItemContent_ContentChanged(object? sender, TabBarItemParameter e)
 		{
 			if (SidebarAdaptiveViewModel.PaneHolder is null)
@@ -297,6 +309,12 @@ private void Page_Loaded(object sender, RoutedEventArgs e)
 			FindName(nameof(TabControl));
 			FindName(nameof(NavToolbar));
 
+			if (_nonClientPointerSource is null)
+			{
+				_nonClientPointerSource = InputNonClientPointerSource.GetForWindowId(MainWindow.Instance.AppWindow.Id);
+				_nonClientPointerSource.PointerPressed += NonClientPointerSource_PointerPressed;
+			}
+
 			// Notify user that drag and drop is disabled
 			// Prompt is disabled in the dev environment to prevent issues with the automation testing 
 			// ToDo put this in a StartupPromptService