67 lines
2.4 KiB
C#
67 lines
2.4 KiB
C#
using DevExpress.Utils.Drawing.Helpers;
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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namespace JJMediSys
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{
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static class Program
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{
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/// <summary>
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/// 应用程序的主入口点。
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/// </summary>
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[STAThread]
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static void Main()
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{
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//Application.EnableVisualStyles();
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//Application.SetCompatibleTextRenderingDefault(false);
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//Application.Run(new Login());
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// 定义一个唯一的 Mutex 名称
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string mutexName = "Global\\JJMediSys";
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// 创建一个全局命名的 Mutex
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using (Mutex mutex = new Mutex(true, mutexName, out bool isNewInstance))
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{
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if (isNewInstance)
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{
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// 如果是新的实例，继续启动应用程序
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Application.EnableVisualStyles();
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Application.SetCompatibleTextRenderingDefault(false);
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Application.Run(new Login());
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}
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else
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{
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// 如果已经有实例在运行，显示消息或激活已有实例
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//MessageBox.Show("应用程序已经在运行。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
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// 尝试找到并激活已有的实例
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Process currentProcess = Process.GetCurrentProcess();
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foreach (Process process in Process.GetProcessesByName(currentProcess.ProcessName))
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{
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if (process.Id != currentProcess.Id)
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{
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try
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{
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// 将焦点切换到已有的实例
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NativeMethods.SetForegroundWindow(process.MainWindowHandle);
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break;
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}
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catch (Exception ex)
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{
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// 处理可能的异常，例如窗口句柄无效
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Console.WriteLine($"Error: {ex.Message}");
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}
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}
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}
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}
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}
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}
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}
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}
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