Disable Alt+F4 command

shibayan · Sep 2, 2020 · a06cd36 · a06cd36
1 parent 54d9fd1
commit a06cd36
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Showing 3 changed files with 29 additions and 2 deletions.
diff --git a/WinQuickLook/Interop/Consts.cs b/WinQuickLook/Interop/Consts.cs
@@ -7,12 +7,21 @@ public static class Consts
         public const int WH_KEYBOARD_LL = 13;
         public const int WH_MOUSE_LL = 14;
         public const int HC_ACTION = 0;
+
+        public const int HTCAPTION = 0x02;
+        public const int WM_NCRBUTTONDOWN = 0x00a4;
+        public const int WM_CONTEXTMENU = 0x007b;
         public const int WM_KEYDOWN = 0x0100;
+        public const int WM_SYSKEYDOWN = 0x0104;
         public const int WM_LBUTTONDOWN = 0x0201;
 
+        public const int VK_F4 = 0x73;
+
         public const int MAX_PATH = 260;
 
         public const int GWL_STYLE = -16;
+        public const int WS_MAXIMIZEBOX = 0x00010000;
+        public const int WS_MINIMIZEBOX = 0x00020000;
         public const int WS_SYSMENU = 0x00080000;
 
         public const int GWL_EXSTYLE = -20;

diff --git a/WinQuickLook/QuickLookWindow.xaml b/WinQuickLook/QuickLookWindow.xaml
@@ -5,7 +5,7 @@
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         mc:Ignorable="d"
         x:Name="window" d:DesignWidth="600" d:DesignHeight="400" MinWidth="400" MinHeight="400" Background="Transparent" WindowStyle="None"
-        ShowActivated="False" ShowInTaskbar="False" SnapsToDevicePixels="True" UseLayoutRounding="True" FocusVisualStyle="{x:Null}" WindowState="Normal"
+        ShowActivated="False" ShowInTaskbar="False" SnapsToDevicePixels="True" UseLayoutRounding="True" FocusVisualStyle="{x:Null}"
         Unloaded="Window_Unloaded" SizeChanged="Window_SizeChanged">
     <Window.Resources>
         <ResourceDictionary Source="Styles.xaml" />

diff --git a/WinQuickLook/QuickLookWindow.xaml.cs b/WinQuickLook/QuickLookWindow.xaml.cs
@@ -198,7 +198,25 @@ private void InitializeWindowStyle()
             Marshal.FreeHGlobal(accentPolicyPtr);
 
             var style = NativeMethods.GetWindowLong(hwnd, Consts.GWL_STYLE);
-            NativeMethods.SetWindowLong(hwnd, Consts.GWL_STYLE, style & ~Consts.WS_SYSMENU);
+            NativeMethods.SetWindowLong(hwnd, Consts.GWL_STYLE, style & ~(Consts.WS_SYSMENU | Consts.WS_MINIMIZEBOX | Consts.WS_MAXIMIZEBOX));
+
+            var hwndSource = HwndSource.FromHwnd(hwnd);
+            hwndSource.AddHook(WndProc);
+        }
+
+        private static IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
+        {
+            switch (msg)
+            {
+                case Consts.WM_SYSKEYDOWN:
+                    if (wParam.ToInt32() == Consts.VK_F4)
+                    {
+                        handled = true;
+                    }
+                    break;
+            }
+
+            return IntPtr.Zero;
         }
 
         private void MoveWindowCentering(Size requestSize)