Fix SetWindowLong issue

Author: Jack251970

Flow.Launcher.Infrastructure/NativeMethods.txt

@@ -28,7 +28,6 @@ SystemParametersInfo
 SetForegroundWindow
 
 GetWindowLong
-SetWindowLong
 GetForegroundWindow
 GetDesktopWindow
 GetShellWindow

Flow.Launcher.Infrastructure/PInvokeExtensions.cs

@@ -0,0 +1,25 @@
+using System.Runtime.InteropServices;
+using Windows.Win32.Foundation;
+using Windows.Win32.UI.WindowsAndMessaging;
+
+namespace Windows.Win32;
+
+// Edited from: https://github.com/files-community/Files
+internal static partial class PInvoke
+{
+    [DllImport("User32", EntryPoint = "SetWindowLongW", ExactSpelling = true)]
+    static extern int _SetWindowLong(HWND hWnd, int nIndex, int dwNewLong);
+
+    [DllImport("User32", EntryPoint = "SetWindowLongPtrW", ExactSpelling = true)]
+    static extern nint _SetWindowLongPtr(HWND hWnd, int nIndex, nint dwNewLong);
+
+    // NOTE:
+    //  CsWin32 doesn't generate SetWindowLong on other than x86 and vice versa.
+    //  For more info, visit https://github.com/microsoft/CsWin32/issues/882
+    public static unsafe nint SetWindowLongPtr(HWND hWnd, WINDOW_LONG_PTR_INDEX nIndex, nint dwNewLong)
+    {
+        return sizeof(nint) is 4
+          ? _SetWindowLong(hWnd, (int)nIndex, (int)dwNewLong)
+          : _SetWindowLongPtr(hWnd, (int)nIndex, dwNewLong);
+    }
+}

Flow.Launcher.Infrastructure/Win32Helper.cs

@@ -132,12 +132,12 @@ public static void HideFromAltTab(Window window)
         {
             var hwnd = GetWindowHandle(window);
 
-            var exStyle = GetCurrentWindowStyle(hwnd, WINDOW_LONG_PTR_INDEX.GWL_EXSTYLE);
+            var exStyle = GetWindowStyle(hwnd, WINDOW_LONG_PTR_INDEX.GWL_EXSTYLE);
 
             // Add TOOLWINDOW style, remove APPWINDOW style
             var newExStyle = ((uint)exStyle | (uint)WINDOW_EX_STYLE.WS_EX_TOOLWINDOW) & ~(uint)WINDOW_EX_STYLE.WS_EX_APPWINDOW;
 
-            SetWindowLong(hwnd, WINDOW_LONG_PTR_INDEX.GWL_EXSTYLE, (int)newExStyle);
+            SetWindowStyle(hwnd, WINDOW_LONG_PTR_INDEX.GWL_EXSTYLE, (int)newExStyle);
         }
 
         /// <summary>
@@ -148,12 +148,12 @@ public static void ShowInAltTab(Window window)
         {
             var hwnd = GetWindowHandle(window);
 
-            var exStyle = GetCurrentWindowStyle(hwnd, WINDOW_LONG_PTR_INDEX.GWL_EXSTYLE);
+            var exStyle = GetWindowStyle(hwnd, WINDOW_LONG_PTR_INDEX.GWL_EXSTYLE);
 
             // Remove the TOOLWINDOW style and add the APPWINDOW style.
             var newExStyle = ((uint)exStyle & ~(uint)WINDOW_EX_STYLE.WS_EX_TOOLWINDOW) | (uint)WINDOW_EX_STYLE.WS_EX_APPWINDOW;
 
-            SetWindowLong(GetWindowHandle(window), WINDOW_LONG_PTR_INDEX.GWL_EXSTYLE, (int)newExStyle);
+            SetWindowStyle(GetWindowHandle(window), WINDOW_LONG_PTR_INDEX.GWL_EXSTYLE, (int)newExStyle);
         }
 
         /// <summary>
@@ -164,14 +164,14 @@ public static void DisableControlBox(Window window)
         {
             var hwnd = GetWindowHandle(window);
 
-            var style = GetCurrentWindowStyle(hwnd, WINDOW_LONG_PTR_INDEX.GWL_STYLE);
+            var style = GetWindowStyle(hwnd, WINDOW_LONG_PTR_INDEX.GWL_STYLE);
 
             style &= ~(int)WINDOW_STYLE.WS_SYSMENU;
 
-            SetWindowLong(hwnd, WINDOW_LONG_PTR_INDEX.GWL_STYLE, style);
+            SetWindowStyle(hwnd, WINDOW_LONG_PTR_INDEX.GWL_STYLE, style);
         }
 
-        private static int GetCurrentWindowStyle(HWND hWnd, WINDOW_LONG_PTR_INDEX nIndex)
+        private static int GetWindowStyle(HWND hWnd, WINDOW_LONG_PTR_INDEX nIndex)
         {
             var style = PInvoke.GetWindowLong(hWnd, nIndex);
             if (style == 0 && Marshal.GetLastPInvokeError() != 0)
@@ -181,11 +181,11 @@ private static int GetCurrentWindowStyle(HWND hWnd, WINDOW_LONG_PTR_INDEX nIndex
             return style;
         }
 
-        private static int SetWindowLong(HWND hWnd, WINDOW_LONG_PTR_INDEX nIndex, int dwNewLong)
+        private static nint SetWindowStyle(HWND hWnd, WINDOW_LONG_PTR_INDEX nIndex, int dwNewLong)
         {
             PInvoke.SetLastError(WIN32_ERROR.NO_ERROR); // Clear any existing error
 
-            var result = PInvoke.SetWindowLong(hWnd, nIndex, dwNewLong);
+            var result = PInvoke.SetWindowLongPtr(hWnd, nIndex, dwNewLong);
             if (result == 0 && Marshal.GetLastPInvokeError() != 0)
             {
                 throw new Win32Exception(Marshal.GetLastPInvokeError());
@@ -299,14 +299,14 @@ public static Point TransformPixelsToDIP(Visual visual, double unitX, double uni
 
         #region WndProc
 
-        public static bool WM_ENTERSIZEMOVE(int msg)
+        public static bool WM_ENTERSIZEMOVE(uint msg)
         {
-            return msg == (int)PInvoke.WM_ENTERSIZEMOVE;
+            return msg == PInvoke.WM_ENTERSIZEMOVE;
         }
 
-        public static bool WM_EXITSIZEMOVE(int msg)
+        public static bool WM_EXITSIZEMOVE(uint msg)
         {
-            return msg == (int)PInvoke.WM_EXITSIZEMOVE;
+            return msg == PInvoke.WM_EXITSIZEMOVE;
         }
 
         #endregion

Flow.Launcher/MainWindow.xaml.cs

@@ -377,13 +377,13 @@ private async void OnContextMenusForSettingsClick(object sender, RoutedEventArgs
 
         private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
         {
-            if (Win32Helper.WM_ENTERSIZEMOVE(msg))
+            if (Win32Helper.WM_ENTERSIZEMOVE((uint)msg))
             {
                 _initialWidth = (int)Width;
                 _initialHeight = (int)Height;
                 handled = true;
             }
-            else if (Win32Helper.WM_EXITSIZEMOVE(msg))
+            else if (Win32Helper.WM_EXITSIZEMOVE((uint)msg))
             {
                 if (_initialHeight != (int)Height)
                 {