From ec2d793e4980589e2ab3380f619037baa1cb3079 Mon Sep 17 00:00:00 2001
From: niuzhix <35690637@qq.com>
Date: Thu, 7 Aug 2025 07:43:57 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E5=A2=9E=E5=8A=A0=E4=BA=92=E6=96=A5?=
 =?UTF-8?q?=E9=94=81=E4=BB=A5=E9=98=B2=E6=AD=A2=E5=A4=9A=E8=BF=9B=E7=A8=8B?=
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---
 CRSim/App.xaml.cs               | 10 +++++++++-
 CRSim/Properties/GlobalUsing.cs |  1 +
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/CRSim/App.xaml.cs b/CRSim/App.xaml.cs
index 4123f7d..a7a68ee 100644
--- a/CRSim/App.xaml.cs
+++ b/CRSim/App.xaml.cs
@@ -6,10 +6,18 @@
         public static MainWindow MainWindow;
         public string[] commandLineArgs;
         public CommandLineOptions parsedOptions;
-        public static string AppVersion { get; set; } = Assembly.GetAssembly(typeof(App)).GetName().Version.ToString(); 
+        public static string AppVersion { get; set; } = Assembly.GetAssembly(typeof(App)).GetName().Version.ToString();
+        private Mutex mutex;
 
         public App()
         {
+            bool isNewInstance;
+            mutex = new Mutex(true,"CRSim",out isNewInstance);
+            if (!isNewInstance)
+            {
+                Environment.Exit(0);
+            }
+
             var args = Environment.GetCommandLineArgs();
             parsedOptions = CommandLineParser.Parse(args);
             if (parsedOptions.Debug)
diff --git a/CRSim/Properties/GlobalUsing.cs b/CRSim/Properties/GlobalUsing.cs
index 71cc718..c5a27e9 100644
--- a/CRSim/Properties/GlobalUsing.cs
+++ b/CRSim/Properties/GlobalUsing.cs
@@ -8,6 +8,7 @@ global using System.Collections.Generic;
 global using System.Collections.ObjectModel;
 global using System.Reflection;
 global using System.Timers;
+global using System.Threading;
 
 global using Microsoft.UI.Xaml;
 global using Microsoft.UI.Xaml.Controls;