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;
}
}
}
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;
}
}
}