增加IsShuttingDownFromTray标志位

SpineViewer/ViewModels/MainWindow/MainWindowViewModel.cs

@@ -29,6 +29,12 @@ namespace SpineViewer.ViewModels.MainWindow
 
         public string Title => $"SpineViewer - v{App.Version}";
 
+        /// <summary>
+        /// 指示是否通过托盘图标进行退出
+        /// </summary>
+        public bool IsShuttingDownFromTray => _isShuttingDownFromTray;
+        private bool _isShuttingDownFromTray;
+
         public bool? CloseToTray
         {
             get => _closeToTray;
@@ -101,8 +107,13 @@ namespace SpineViewer.ViewModels.MainWindow
         });
         private RelayCommand _cmd_SwitchWallpaperView;
 
-        public RelayCommand Cmd_Exit => _cmd_Exit ??= new(App.Current.Shutdown);
-        private RelayCommand? _cmd_Exit;
+        public RelayCommand Cmd_ExitFromTray => _cmd_ExitFromTray ??= new(() =>
+        {
+            _isShuttingDownFromTray = true;
+            OnPropertyChanged(nameof(IsShuttingDownFromTray));
+            App.Current.Shutdown();
+        });
+        private RelayCommand? _cmd_ExitFromTray;
 
         /// <summary>
         /// 打开工作区

SpineViewer/Views/MainWindow.xaml

@@ -942,7 +942,7 @@
                 <ContextMenu>
                     <MenuItem Header="{DynamicResource Str_WallpaperView}" Command="{Binding Cmd_SwitchWallpaperView}" IsChecked="{Binding PreferenceViewModel.WallpaperView}"/>
                     <Separator/>
-                    <MenuItem Header="{DynamicResource Str_Exit}" Command="{Binding Cmd_Exit}"/>
+                    <MenuItem Header="{DynamicResource Str_Exit}" Command="{Binding Cmd_ExitFromTray}"/>
                 </ContextMenu>
             </hc:NotifyIcon.ContextMenu>
         </hc:NotifyIcon>

SpineViewer/Views/MainWindow.xaml.cs

@@ -226,6 +226,9 @@ public partial class MainWindow : Window
 
     private void MainWindow_Closing(object? sender, CancelEventArgs e)
     {
+        if (_vm.IsShuttingDownFromTray)
+            return;
+
         if (_vm.CloseToTray is null)
         {
             _vm.PreferenceViewModel.CloseToTray = MessagePopupService.YesNo(AppResource.Str_CloseToTrayQuest);