Fix environment exit stuck issue

Author: Jack251970

Flow.Launcher/App.xaml.cs

@@ -304,6 +304,14 @@ protected virtual void Dispose(bool disposing)
                     return;
                 }
 
+                // If we call Environment.Exit(0), the application dispose will be called before _mainWindow.Close()
+                // Accessing _mainWindow?.Dispatcher will cause the application stuck
+                // So here we need to check it and just return so that we will not acees _mainWindow?.Dispatcher
+                if (!_mainWindow.CanClose)
+                {
+                    return;
+                }
+
                 _disposed = true;
             }
 

Flow.Launcher/MainWindow.xaml.cs

@@ -32,6 +32,13 @@ namespace Flow.Launcher
 {
     public partial class MainWindow : IDisposable
     {
+        #region Public Property
+
+        // Window Event: Close Event
+        public bool CanClose { get; set; } = false;
+
+        #endregion
+
         #region Private Fields
 
         // Dependency Injection
@@ -45,8 +52,6 @@ public partial class MainWindow : IDisposable
         private readonly ContextMenu _contextMenu = new();
         private readonly MainViewModel _viewModel;
 
-        // Window Event: Close Event
-        private bool _canClose = false;
         // Window Event: Key Event
         private bool _isArrowKeyPressed = false;
 
@@ -279,15 +284,15 @@ private async void OnLoaded(object sender, RoutedEventArgs _)
 
         private async void OnClosing(object sender, CancelEventArgs e)
         {
-            if (!_canClose)
+            if (!CanClose)
             {
                 _notifyIcon.Visible = false;
                 App.API.SaveAppAllSettings();
                 e.Cancel = true;
                 await PluginManager.DisposePluginsAsync();
                 Notification.Uninstall();
                 // After plugins are all disposed, we can close the main window
-                _canClose = true;
+                CanClose = true;
                 // Use this instead of Close() to avoid InvalidOperationException when calling Close() in OnClosing event
                 Application.Current.Shutdown();
             }