Code cleanup

Author: Jack251970

Flow.Launcher.Infrastructure/Win32Helper.cs

@@ -16,7 +16,21 @@ public static bool IsBackdropSupported()
         {
             // Windows 11 (22000) 이상에서만 Mica 및 Acrylic 효과 지원
             return RuntimeInformation.IsOSPlatform(OSPlatform.Windows) &&
-                   Environment.OSVersion.Version.Build >= 22000;
+                Environment.OSVersion.Version.Build >= 22000;
+        }
+
+        public static unsafe bool DWMSetCloakForWindow(Window window, bool cloak)
+        {
+            var windowHelper = new WindowInteropHelper(window);
+            windowHelper.EnsureHandle();
+
+            var cloaked = cloak ? 1 : 0;
+
+            return PInvoke.DwmSetWindowAttribute(
+                new(windowHelper.Handle),
+                DWMWINDOWATTRIBUTE.DWMWA_CLOAK,
+                &cloaked,
+                (uint)Marshal.SizeOf<int>()).Succeeded;
         }
 
         public static unsafe bool DWMSetBackdropForWindow(Window window, BackdropTypes backdrop)

Flow.Launcher/MainWindow.xaml.cs

@@ -186,12 +186,11 @@ private async void OnLoaded(object sender, RoutedEventArgs _)
             InitializeColorScheme();
             WindowsInteropHelper.DisableControlBox(this);
             InitProgressbarAnimation();
-            // Move the window out of screen because setting backdrop will cause flicker with a rectangle
-            Left = Top = -10000;
-            await ThemeManager.Instance.RefreshFrameAsync();
             // Initialize call twice to work around multi-display alignment issue- https://github.com/Flow-Launcher/Flow.Launcher/issues/2910
             InitializePosition();
             InitializePosition();
+            // Refresh frame
+            await ThemeManager.Instance.RefreshFrameAsync();
             PreviewReset();
             // Since the default main window visibility is visible, so we need set focus during startup
             QueryTextBox.Focus();
@@ -825,26 +824,13 @@ private void OnLocationChanged(object sender, EventArgs e)
 
         public void HideStartup()
         {
-            //_viewModel.MainWindowOpacity = 0.2; /*Fix Render Blinking */
             if (_settings.HideOnStartup)
             {
-                // 📌 최초 실행 시 창이 깜빡이는 문제 방지 (완전히 숨긴 상태로 시작)
-                //System.Windows.Application.Current.MainWindow.Visibility = Visibility.Hidden;
-
-                //Dispatcher.BeginInvoke((Action)(() =>
-                //{
-                //    _viewModel.Hide();
-                //    System.Windows.Application.Current.MainWindow.Visibility = Visibility.Collapsed;
-                //}), DispatcherPriority.Background);
                 _viewModel.Hide();
             }
             else
             {
-                // 📌 최초 실행 시 그림자 효과를 미리 적용하여 Show() 할 때 렌더링이 느려지지 않도록 함
-                //ThemeManager.Instance.SetBlurForWindow();
-                //ThemeManager.Instance.AutoDropShadow();
                 _viewModel.Show();
-                //_viewModel.MainWindowOpacity = 1;
             }
         }
 

Flow.Launcher/ViewModel/MainViewModel.cs

@@ -1386,10 +1386,8 @@ public void Show()
             {
                 if (Application.Current.MainWindow is MainWindow mainWindow)
                 {
-                    IntPtr hWnd = new WindowInteropHelper(mainWindow).Handle;
-
-                    // 📌 창을 보이도록 설정 (Cloak 사용 안 함)
-                    //ShowWindow(hWnd, SW_SHOW);
+                    // 📌 DWM Cloak 해제 (창을 정상적으로 표시)
+                    Win32Helper.DWMSetCloakForWindow(mainWindow, false);
 
                     // 📌 UI 요소 복원
                     mainWindow.ClockPanel.Visibility = Visibility.Visible;
@@ -1433,7 +1431,8 @@ public async void Hide()
                     mainWindow.SearchIcon.UpdateLayout();
                 }, DispatcherPriority.Render);
 
-                //await Task.Delay(10); // UI 반영 대기
+                // 📌 DWM Cloak 적용 (창을 완전히 숨김)
+                Win32Helper.DWMSetCloakForWindow(mainWindow, true);
             }
 
             // 📌 텍스트 초기화 즉시 적용 + UI 강제 업데이트