blueyund

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最近要做个控制台程序,在用户关闭程序的时候要做些处理,但控制台程序却没有WinForm的Closing或Closed事件,想想只能用API才捕捉消息来实现了,代码如下:

 

using System;
using System.Windows.Forms;
using System.Diagnostics;
using System.Runtime.InteropServices;
namespace ConsoleColsed
{
public delegate bool ConsoleCtrlDelegate(int dwCtrlType);
public class ClsMain
{
[DllImport("kernel32.dll")]
private static extern bool SetConsoleCtrlHandler(ConsoleCtrlDelegate HandlerRoutine, bool Add);
//当用户关闭Console时,系统会发送次消息
        private const int CTRL_CLOSE_EVENT = 2;
[STAThread]
static void Main()
{
ClsMain cls = new ClsMain();
}
public ClsMain()
{
// 用API安装事件处理
            ConsoleCtrlDelegate newDelegate = new ConsoleCtrlDelegate(HandlerRoutine);
bool bRet = SetConsoleCtrlHandler(newDelegate, true);
if (bRet == false)  //安装事件处理失败
            {
Debug.WriteLine("失败");
}
else
{
Console.WriteLine("ok");
Console.Read();
}
}
/// <summary>
        /// 处理消息的事件
        /// </summary>
        private static bool HandlerRoutine(int CtrlType)
{
switch (CtrlType)
{
case CTRL_CLOSE_EVENT:       //用户要关闭Console了
                Debug.WriteLine("Close");
break;
}
return false;
}
}
}

 

事例2:

 

 

using System;
using System.Runtime.InteropServices;
using System.Threading;
using System.Diagnostics;

namespace ConsoleApplication3
{
    
public delegate bool ConsoleCtrlDelegate(int dwCtrlType);
    
///    <summary>   
    
///    Class1    的摘要说明。   
    
///    </summary>   

    class Class1
    

        [DllImport(
"kernel32.dll")]
        
private static extern bool SetConsoleCtrlHandler(ConsoleCtrlDelegate HandlerRoutine, bool Add);
        
//一個Ctrl    +    C的信號被接收,該信號或來自鍵盤,或來自GenerateConsoleCtrlEvent    函數   
        private const int CTRL_C_EVENT = 0;
        
//一個    Ctrl    +    Break    信號被接收,該信號或來自鍵盤,或來自GenerateConsoleCtrlEvent    函數   
        private const int CTRL_BREAK_EVENT = 1;
        
//當用戶系統關閉Console時,系統會發送此信號到此   
        private const int CTRL_CLOSE_EVENT = 2;
        
//當用戶退出系統時系統會發送這個信號給所有的Console程序。該信號不能顯示是哪個用戶退出。   
        private const int CTRL_LOGOFF_EVENT = 5;
        
//當系統將要關閉時會發送此信號到所有Console程序   
        private const int CTRL_SHUTDOWN_EVENT = 6;
        
///    <summary>   
        
///    应用程序的主入口点。   
        
///    </summary>   

        [STAThread]
        
static void Main(string[] args)
        
{
            
//   
            
//    TODO:    在此处添加代码以启动应用程序   
            
//   
            Class1 cl = new Class1();
        }


        
public Class1()
        
{
            ConsoleCtrlDelegate newDategate 
= new ConsoleCtrlDelegate(HandlerRoutine);
            
bool re = SetConsoleCtrlHandler(newDategate, true);
            
if (re)
            
{
                Console.WriteLine(
"Set    SetConsoleCtrlHandler    success!!");
            }

            
else
            
{
                Debug.WriteLine(
"Set    SetConsoleCtrlHandler    Error!!");
                
//AsReportFile.WriteFile("", "test.txt", "who close?");
            }

            Console.ReadLine();
        }


        
bool HandlerRoutine(int CtrlType)
        
{
            Console.WriteLine(
"Set    SetConsoleCtrlHandler    success!!");
            Console.WriteLine(
"Set    SetConsoleCtrlHandler    success!!");
            Console.WriteLine(
"Set    SetConsoleCtrlHandler    success!!");
            Console.WriteLine(
"Set    SetConsoleCtrlHandler    success!!");
            Console.WriteLine(
"Set    SetConsoleCtrlHandler    success!!");
            Console.WriteLine(
"Set    SetConsoleCtrlHandler    success!!");
            Console.WriteLine(
"Set    SetConsoleCtrlHandler    success!!");

            
switch (CtrlType)
            
{
                
case CTRL_CLOSE_EVENT:
                    
for (int i = 0; i < 100; i++)
                    
{
                        Console.WriteLine(
"i    is:{0}", i);
                        Thread.Sleep(
1000);
                    }

                    
break;
            }


            
return false;
        }

    }

}

posted on 2008-08-19 10:29  blueyund  阅读(1030)  评论(0编辑  收藏  举报