Use CSWin32 for code quality

Author: Jack251970

Flow.Launcher/Helper/WindowsInteropHelper.cs

@@ -151,29 +151,11 @@ public static Point TransformPixelsToDIP(Visual visual, double unitX, double uni
 
     #region Alt Tab
 
-    private const int GWL_EXSTYLE = -20;
-    private const int WS_EX_TOOLWINDOW = 0x00000080;
-    private const int WS_EX_APPWINDOW = 0x00040000;
-
-    [DllImport("user32.dll")]
-    private static extern IntPtr GetWindowLong(IntPtr hWnd, int nIndex);
-
-    [DllImport("user32.dll", EntryPoint = "SetWindowLongPtr", SetLastError = true)]
-    private static extern IntPtr IntSetWindowLongPtr(IntPtr hWnd, int nIndex, IntPtr dwNewLong);
-
-    [DllImport("user32.dll", EntryPoint = "SetWindowLong", SetLastError = true)]
-    private static extern int IntSetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);
-
-    [DllImport("kernel32.dll", EntryPoint = "SetLastError")]
-    private static extern void SetLastError(int dwErrorCode);
-
-    private static IntPtr SetWindowLong(IntPtr hWnd, int nIndex, IntPtr dwNewLong)
+    private static IntPtr SetWindowLong(HWND hWnd, WINDOW_LONG_PTR_INDEX nIndex, int dwNewLong)
     {
-        SetLastError(0); // Clear any existing error
-
-        if (IntPtr.Size == 4) return new IntPtr(IntSetWindowLong(hWnd, nIndex, IntPtrToInt32(dwNewLong)));
+        PInvoke.SetLastError(WIN32_ERROR.NO_ERROR); // Clear any existing error
 
-        return IntSetWindowLongPtr(hWnd, nIndex, dwNewLong);
+        return PInvoke.SetWindowLong(hWnd, nIndex, dwNewLong);
     }
 
     private static int IntPtrToInt32(IntPtr intPtr)
@@ -182,44 +164,44 @@ private static int IntPtrToInt32(IntPtr intPtr)
     }
 
     /// <summary>
-    ///     Hide windows in the Alt+Tab window list
+    /// Hide windows in the Alt+Tab window list
     /// </summary>
     /// <param name="window">To hide a window</param>
     public static void HideFromAltTab(Window window)
     {
         var helper = new WindowInteropHelper(window);
-        var exStyle = GetWindowLong(helper.Handle, GWL_EXSTYLE).ToInt32();
+        var exStyle = PInvoke.GetWindowLong(new(helper.Handle), WINDOW_LONG_PTR_INDEX.GWL_EXSTYLE);
 
         // Add TOOLWINDOW style, remove APPWINDOW style
-        exStyle = (exStyle | WS_EX_TOOLWINDOW) & ~WS_EX_APPWINDOW;
+        var newExStyle = ((uint)exStyle | (uint)WINDOW_EX_STYLE.WS_EX_TOOLWINDOW) & ~(uint)WINDOW_EX_STYLE.WS_EX_APPWINDOW;
 
-        SetWindowLong(helper.Handle, GWL_EXSTYLE, new IntPtr(exStyle));
+        SetWindowLong(new(helper.Handle), WINDOW_LONG_PTR_INDEX.GWL_EXSTYLE, (int)newExStyle);
     }
 
     /// <summary>
-    ///     Restore window display in the Alt+Tab window list.
+    /// Restore window display in the Alt+Tab window list.
     /// </summary>
     /// <param name="window">To restore the displayed window</param>
     public static void ShowInAltTab(Window window)
     {
         var helper = new WindowInteropHelper(window);
-        var exStyle = GetWindowLong(helper.Handle, GWL_EXSTYLE).ToInt32();
+        var exStyle = PInvoke.GetWindowLong(new(helper.Handle), WINDOW_LONG_PTR_INDEX.GWL_EXSTYLE);
 
         // Remove the TOOLWINDOW style and add the APPWINDOW style.
-        exStyle = (exStyle & ~WS_EX_TOOLWINDOW) | WS_EX_APPWINDOW;
+        var newExStyle = ((uint)exStyle & ~(uint)WINDOW_EX_STYLE.WS_EX_TOOLWINDOW) | (uint)WINDOW_EX_STYLE.WS_EX_APPWINDOW;
 
-        SetWindowLong(helper.Handle, GWL_EXSTYLE, new IntPtr(exStyle));
+        SetWindowLong(new(helper.Handle), WINDOW_LONG_PTR_INDEX.GWL_EXSTYLE, (int)newExStyle);
     }
 
     /// <summary>
-    ///     To obtain the current overridden style of a window.
+    /// To obtain the current overridden style of a window.
     /// </summary>
     /// <param name="window">To obtain the style dialog window</param>
     /// <returns>current extension style value</returns>
     public static int GetCurrentWindowStyle(Window window)
     {
         var helper = new WindowInteropHelper(window);
-        return GetWindowLong(helper.Handle, GWL_EXSTYLE).ToInt32();
+        return PInvoke.GetWindowLong(new(helper.Handle), WINDOW_LONG_PTR_INDEX.GWL_EXSTYLE);
     }
 
     #endregion

Flow.Launcher/NativeMethods.txt

@@ -14,4 +14,7 @@ FindWindowEx
 WINDOW_STYLE
 
 WM_ENTERSIZEMOVE
-WM_EXITSIZEMOVE
+WM_EXITSIZEMOVE
+
+SetLastError
+WINDOW_EX_STYLE