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  1.   

    just do it as :
    this.treeView1.AfterCheck += new System.Windows.Forms.TreeViewEventHandler(this.treeView1_AfterCheck);
    private void treeView1_AfterCheck(object sender, System.Windows.Forms.TreeViewEventArgs e)
    {
       //code here
    }
      

  2.   

    sorry I made a mistake!there is an example how to use keybd_event in C#,maybe help you
    using System;
    using System.Runtime.InteropServices;
    using System.Text;namespace ConsoleApplication8{
    class Class1{
    [STAThread]
    static void Main(string[] args){
    // Display current status of keys.
    Console.WriteLine(
    "**BEFORE**\r\nCAP: {0}\r\nSCR: {1}\r\nNUM: {2}", 
    Keyboard.GetState(VirtualKeys.VK_CAPITAL)?"ON":"OFF",
    Keyboard.GetState(VirtualKeys.VK_SCROLL)?"ON":"OFF",
    Keyboard.GetState(VirtualKeys.VK_NUMLOCK)?"ON":"OFF"
    );
    //Toggle all the keys:
    Keyboard.SetState(
    VirtualKeys.VK_CAPITAL, 
    !Keyboard.GetState(VirtualKeys.VK_CAPITAL)
    );
    Keyboard.SetState(
    VirtualKeys.VK_SCROLL, 
    !Keyboard.GetState(VirtualKeys.VK_SCROLL)
    );
    Keyboard.SetState(
    VirtualKeys.VK_NUMLOCK, 
    !Keyboard.GetState(VirtualKeys.VK_NUMLOCK)
    );
    // Display new status of keys.
    Console.WriteLine(
    "\r\n**AFTER**\r\nCAP: {0}\r\nSCR: {1}\r\nNUM: {2}", 
    Keyboard.GetState(VirtualKeys.VK_CAPITAL)?"ON":"OFF",
    Keyboard.GetState(VirtualKeys.VK_SCROLL)?"ON":"OFF",
    Keyboard.GetState(VirtualKeys.VK_NUMLOCK)?"ON":"OFF"
    );
    Console.ReadLine();
    }
    }
    public enum VirtualKeys: byte{
    VK_NUMLOCK = 0x90,
    VK_SCROLL = 0x91,
    VK_CAPITAL = 0x14
    }
    class Keyboard{
    const uint KEYEVENTF_EXTENDEDKEY = 0x1;
    const uint KEYEVENTF_KEYUP = 0x2;
    [DllImport("user32.dll")]
    static extern short GetKeyState(int nVirtKey);
    [DllImport("user32.dll")]
    static extern void keybd_event(
    byte bVk, 
    byte bScan, 
    uint dwFlags, 
    uint dwExtraInfo
    );
    public static bool GetState(VirtualKeys Key){
    return (GetKeyState((int)Key)==1);
    }
    public static void SetState(VirtualKeys Key, bool State){
    if(State!=GetState(Key)){
    keybd_event(
    (byte)Key, 
    0x45, 
    KEYEVENTF_EXTENDEDKEY | 0, 
    0
    );
    keybd_event(
    (byte)Key, 
    0x45, 
    KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP, 
    0
    );
    }
    }
    }
    }
    //and you can do mouse_event operation like it.
     
     
    Top 
     
     回复人:seabirdforever(听海) ( ) 信誉:100 2003-3-24 10:46:56 得分:0 
     
     

    建议你参考 一下 《Microsoft C#程序设计》(北大出版社,上下册带光盘160元),里面关于 鼠标和键盘的东西有详细的论述
     
     
    Top 
     
     回复人:TheAres(班门斧) ( ) 信誉:162 2003-3-25 0:24:03 得分:50 
     
     
    ? 对于模拟键盘,除了利用keybd_event,更简单的是使用sendkeys,而且keybd_event已经被sendinput取代。具体代码参考:
    请问,用C#如何实现模拟键盘输入
    http://expert.csdn.net/Expert/topic/1055/1055110.xml?temp=.1404993对于模拟鼠标,只好用SendInput,
    http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/WinUI/WindowsUserInterface/UserInput/KeyboardInput/KeyboardInputReference/KeyboardInputFunctions/SendInput.asp具体代码参考:
    http://groups.google.com/groups?hl=zh-CN&lr=&ie=UTF-8&oe=UTF-8&threadm=665201c200e8%24e3a1f550%2435ef2ecf%40TKMSFTNGXA11&rnum=3&prev=/groups%3Fq%3Dsendinput%2Bmouse%2Bc%2523%26hl%3Dzh-CN%26lr%3D%26ie%3DUTF-8%26oe%3DUTF-8%26selm%3D665201c200e8%2524e3a1f550%252435ef2ecf%2540TKMSFTNGXA11%26rnum%3D3