Program.cs
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using log4net.Config;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Runtime.InteropServices;
using System.Threading.Tasks;
using System.Windows.Forms;
using TSA_V.Common;
namespace TSA_V
{
static class Program
{
#region 只启动一个实例
/// <summary>
/// 找到某个窗口与给出的类别名和窗口名相同窗口
/// 非托管定义为：http://msdn.microsoft.com/en-us/library/windows/desktop/ms633499(v=vs.85).aspx
/// </summary>
/// <param name="lpClassName">类别名</param>
/// <param name="lpWindowName">窗口名</param>
/// <returns>成功找到返回窗口句柄,否则返回null</returns>
[DllImport("user32.dll")]
public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
/// <summary>
/// 切换到窗口并把窗口设入前台,类似 SetForegroundWindow方法的功能
/// </summary>
/// <param name="hWnd">窗口句柄</param>
/// <param name="fAltTab">True代表窗口正在通过Alt/Ctrl +Tab被切换</param>
[DllImport("user32.dll ", SetLastError = true)]
static extern void SwitchToThisWindow(IntPtr hWnd, bool fAltTab);
///// <summary>
///// 设置窗口的显示状态
///// Win32 函数定义为：http://msdn.microsoft.com/en-us/library/windows/desktop/ms633548(v=vs.85).aspx
///// </summary>
///// <param name="hWnd">窗口句柄</param>
///// <param name="cmdShow">指示窗口如何被显示</param>
///// <returns>如果窗体之前是可见，返回值为非零；如果窗体之前被隐藏，返回值为零</returns>
[DllImport("user32.dll", EntryPoint = "ShowWindow", CharSet = CharSet.Auto)]
public static extern int ShowWindow(IntPtr hwnd, int nCmdShow);
#endregion
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
//DatumPoint datumPoint = new DatumPoint("YR1", "1", 2, 61.309f, 133.04f, "CRD", 6.06f, -4.31f);
//DatumPoint datumPoint = new DatumPoint("YR1", "1", 2, 61.309f, 133.04f, "CRD", 0, 0);
//LearningControl.TrainModel();
//datumPoint = LearningControl.TestData(datumPoint);
string ext2v = "111101111111".Substring(4, 1);
try
{
// 方法四相对于方法三而言应该可以说是一个改进，
// 因为方法三只能是最小化的窗体显示出来，如果隐藏到托盘中则不能把运行的程序显示出来
// 具体问题可以看这个帖子：http://social.msdn.microsoft.com/Forums/zh-CN/6398fb10-ecc2-4c03-ab25-d03544f5fcc9
Process currentproc = Process.GetCurrentProcess();
Process[] processcollection = Process.GetProcessesByName(currentproc.ProcessName.Replace(".vshost", string.Empty));
// 该程序已经运行，
bool isShow = false;
if (processcollection.Length >= 1)
{
//MessageBox.Show("processcollection.Length >= 1");
foreach (Process process in processcollection)
{
if (process.Id != currentproc.Id)
{
// 如果进程的句柄为0，即代表没有找到该窗体，即该窗体隐藏的情况时
if (process.MainWindowHandle.ToInt32().Equals(0))
{
//MessageBox.Show(currentproc.Id + "");
// 获得窗体句柄
string title = ConfigAppSettings.GetValue("app.title");
IntPtr formhwnd = FindWindow(null, title);
// 重新显示该窗体并切换到带入到前台
int SW_RESTORE = 9;
ShowWindow(formhwnd, SW_RESTORE);
SwitchToThisWindow(formhwnd, true);
isShow = true;
}
else
{
// 如果窗体没有隐藏，就直接切换到该窗体并带入到前台
// 因为窗体除了隐藏到托盘，还可以最小化
SwitchToThisWindow(process.MainWindowHandle, true);
isShow = true;
}
}
}
}
if (!isShow)
{
Application.ThreadException += new System.Threading.ThreadExceptionEventHandler(Application_ThreadException);
AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
ImageManager.Init();
XmlConfigurator.Configure();
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
DeviceLibrary.DB.db = new DAL.SQLite();
bool rtn = DeviceLibrary.DB.db.Connect();
LogUtil.info("登录数据库" + rtn);
FrmLogin frm = new FrmLogin();
DialogResult dr = frm.ShowDialog();
if (dr == DialogResult.OK)
Application.Run(new FrmMenu());
DeviceLibrary.DB.db.Close();
}
}
catch (Exception ex)
{
LogUtil.error(ex.ToString());
}
}
static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
{
LogUnhandledException("CurrentDomain_UnhandledException", e.ToString() + "" + e.ExceptionObject.ToString() + " ");
}
static void Application_ThreadException(object sender, System.Threading.ThreadExceptionEventArgs e)
{
LogUnhandledException("Application_ThreadException", e.ToString() + "" + e.Exception.ToString() + " ");
}
static void LogUnhandledException(string type, string exceptionobj)
{
//这里可以进一步地写日志
LogUtil.error("【" + type + "】" + exceptionobj);
MessageBox.Show(exceptionobj, type);
LogUtil.error("【" + type + "】" + exceptionobj);
}
}
}