添加Avalonia项目的demo

Serein.Workbench.Avalonia/Views/MainWindow.axaml.cs

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+using Avalonia.Controls;
+using Avalonia.Input;
+using System.Diagnostics;
+using System;
+using Avalonia.Markup.Xaml;
+using Newtonsoft.Json;
+using Serein.NodeFlow.Env;
+using System.Threading.Tasks;
+using Serein.Library;
+using Serein.Workbench.Avalonia.Services;
+
+namespace Serein.Workbench.Avalonia.Views;
+
+public partial class MainWindow : Window
+{
+    public MainWindow()
+    {
+        InitializeComponent();
+        IKeyEventService keyEventService = App.GetService<IKeyEventService>();
+        this.Loaded += MainWindow_Loaded;
+        this.KeyDown += (o, e) =>
+        {
+            keyEventService.SetKeyState(e.Key, true);
+        };
+        this.KeyUp += (o, e) =>
+        {
+            keyEventService.SetKeyState(e.Key, false);
+        };
+    }
+
+    private void MainWindow_Loaded(object? sender, global::Avalonia.Interactivity.RoutedEventArgs e)
+    {
+        
+        
+    }
+}