78 lines
2.5 KiB
C#
78 lines
2.5 KiB
C#
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.Runtime.InteropServices;
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using System.Windows.Forms;
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namespace 软件系统客户端模版
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{
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static class Program
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{
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/// <summary>
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/// 指示了应用程序退出时的代码
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/// </summary>
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public static int QuitCode { get; set; } = 0;
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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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// 捕获未处理的异常
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AppDomain.CurrentDomain.UnhandledException += ClientsLibrary.UserClient.CurrentDomain_UnhandledException;
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//=====================================================================
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// 为了强制只启动一个应用程序的实例
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Process process = Process.GetCurrentProcess();
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// 遍历应用程序的同名进程组
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foreach (Process p in Process.GetProcessesByName(process.ProcessName))
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{
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// 不是同一进程则关闭刚刚创建的进程
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if (p.Id != process.Id)
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{
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// 此处显示原先的窗口需要一定的时间，不然无法显示
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ShowWindowAsync(p.MainWindowHandle, 9);
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SetForegroundWindow(p.MainWindowHandle);
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System.Threading.Thread.Sleep(10);
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Application.Exit();// 关闭当前的应用程序
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return;
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}
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}
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Application.EnableVisualStyles();
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Application.SetCompatibleTextRenderingDefault(false);
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//===================================================================
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// 运行主窗口之前先进行账户的验证
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P1:
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FormLogin login = new FormLogin();
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if (login.ShowDialog() == DialogResult.OK)
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{
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login.Dispose();
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FormMainWindow fmw = new FormMainWindow();
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Application.Run(fmw);
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if (QuitCode == 1)
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{
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// 继续显示登录窗口
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QuitCode = 0;
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goto P1;
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}
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}
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else
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{
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login.Dispose();
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}
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}
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[DllImport("User32.dll")]
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private static extern bool ShowWindowAsync(IntPtr hWnd, int cmdShow);
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[DllImport("User32.dll")]
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private static extern bool SetForegroundWindow(IntPtr hWnd);
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}
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}
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