程序涉及类：

1、 启动画面类：

public class SplashForm : System.Windows.Forms.Form

{

private System.Windows.Forms.PictureBox pictureBox1;

private System.Windows.Forms.Label label1;

private System.Windows.Forms.Label lbl_version;

/// <summary>

/// 必需的设计器变量。

/// </summary>

private System.ComponentModel.Container components = null;



public SplashForm()

{

//

// Windows 窗体设计器支持所必需的

//

InitializeComponent();

lbl_version.Text = "版本：" + Application.ProductVersion;





//

// TODO: 在 InitializeComponent 调用后添加任何构造函数代码

//

}

//以下省略

2、 应用程序加载类：

using System;

using System.Drawing;

using System.Collections;

using System.ComponentModel;

using System.Windows.Forms;

using System.Data;

using System.Runtime.InteropServices;

using System.Diagnostics;

using System.Reflection;

using System.IO;





namespace Heroic.TempAnalyse.TempGui

{

/// <summary>

/// AppLoader 的摘要说明。

/// </summary>

public class AppLoader

{

private static ApplicationContext context;

private static SplashForm sForm = new SplashForm();

private static MainWindow mForm = null;

//0不可见但仍然运行,1居中,2最小化,3最大化

private const int WS_SHOWNORMAL = 3;





[STAThread]

static void Main(string[] args)

{

// [8/12/2004]用于更新该程序。

doUpData();

// [7/19/2004] 改变顺序,目的使得开始加载速度加快

//得到正在运行的例程

Process instance = RunningInstance();

if(instance == null)

{

sForm.Show();

mForm = new MainWindow();

context = new ApplicationContext();

Application.Idle += new EventHandler(OnAppIdle);

Application.Run(context);

}

else

{

//处理发现的例程

HandleRunningInstance(instance);

//MessageBox.Show("当前程序已经运行了!");

}

}

//在线更新用，不再本文范围

private static void doUpData()

{

System.Diagnostics.Process.Start(Application.StartupPath+"\update.exe",Application.StartupPath+"\Heroic.TempAnalyse.TempGui.exe 0");//

}



private static void OnAppIdle(object sender, EventArgs e)

{

if(context.MainForm == null)

{

Application.Idle -= new EventHandler(OnAppIdle);

mForm.PreLoad();

context.MainForm = mForm;

context.MainForm.Show();

sForm.Close();

sForm = null;

}

}

//不允许有两个程序同时启动

public static Process RunningInstance()

{

Process current = Process.GetCurrentProcess();

Process[] processes = Process.GetProcessesByName (current.ProcessName);

//遍历正在有相同名字运行的例程

foreach (Process process in processes)

{

//忽略现有的例程

if (process.Id != current.Id)

{

//确保例程从EXE文件运行

if (Assembly.GetExecutingAssembly().Location.Replace("/", "\\") ==

current.MainModule.FileName)

{

//返回另一个例程实例

return process;

}

}

}

//没有其它的例程，返回Null

return null;

}



public static void HandleRunningInstance(Process instance)

{

//确保窗口没有被最小化或最大化

ShowWindowAsync (instance.MainWindowHandle , WS_SHOWNORMAL);



//设置真实例程为foreground window

SetForegroundWindow (instance.MainWindowHandle);

}



[DllImport("User32.dll")]



private static extern bool ShowWindowAsync(

IntPtr hWnd, int cmdShow);

[DllImport("User32.dll")] private static extern bool

SetForegroundWindow(IntPtr hWnd);

}

}

3、 加载完毕正式运行后的类：

public void PreLoad()

{

// 如果已经加载毕，则返回

if (_Loaded)

return;





// 把机器生成的代码放到这里

initCustomControl();









_Loaded = true;



}



// 是否加载完毕

private bool _Loaded = false;



protected override void OnLoad(EventArgs e)

{

// 确保 PreLoad()函数已经调用

if (!_Loaded)

throw new InvalidOperationException("Must call PreLoad before calling this function.");







}