最近研究一个键盘钩子 有些问题想咨询下！
最近研究一个键盘钩子，用于设计一个快捷按键后触发一些事件
要在按完快捷键之后执行一个显示倒计时的程序，显示在一个文本框或者label里
请问我应该写在哪里，大致代码如下：
using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.Runtime.InteropServices;using System.Reflection;using System.Diagnostics;namespace pigTime{ public partial class Form1 : Form { //委托 public delegate int HookProc(int nCode, int wParam, IntPtr lParam); static int hHook = 0; public const int WH_KEYBOARD_LL = 13; //LowLevel键盘截获，如果是WH_KEYBOARD＝2，并不能对系统键盘截取，Acrobat Reader会在你截取之前获得键盘。 HookProc KeyBoardHookProcedure; //快捷按键1设定存储 public static string qkey1 = ""; //快捷按键2设定存储 public static string qkey2 = ""; //猪圈国家点 public static int currCity = 0; //刷新点名称 public static string currPoint = ""; //设定时间间隔 public static int tmjg = 0; //设定误差时间 public static int wctm = 0; private static int hour, minute, second, millsecond; //键盘Hook结构函数 [StructLayout(LayoutKind.Sequential)] public class KeyBoardHookStruct { public int vkCode; public int scanCode; public int flags; public int time; public int dwExtraInfo; } #region DllImport //设置钩子 [DllImport("user32.dll")] public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId); [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)] //抽掉钩子 public static extern bool UnhookWindowsHookEx(int idHook); [DllImport("user32.dll")] //调用下一个钩子 public static extern int CallNextHookEx(int idHook, int nCode, int wParam, IntPtr lParam); [DllImport("kernel32.dll")] public static extern int GetCurrentThreadId(); [DllImport("kernel32.dll")] public static extern IntPtr GetModuleHandle(string name); #endregion public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { // TODO: 这行代码将数据加载到表“dbDataSet.TimeData”中。您可以根据需要移动或移除它。 this.timeDataTableAdapter.Fill(this.dbDataSet.TimeData); // TODO: 这行代码将数据加载到表“dbDataSet.itemData”中。您可以根据需要移动或移除它。 this.itemDataTableAdapter.Fill(this.dbDataSet.itemData); this.smallItemDataTableAdapter.Fill(this.dbDataSet.SmallItemData); comboBox1.SelectedIndex = 6; int sitemid = int.Parse(comboBox1.SelectedValue.ToString()); currCity = sitemid; DataRowCollection drc = this.smallItemDataTableAdapter.GetDataBy(sitemid).Rows; label4.Text = drc[0][1].ToString(); label5.Text = drc[1][1].ToString(); label6.Text = drc[0][1].ToString(); label7.Text = drc[1][1].ToString(); textBox3.Text = drc[0]["Qkey"].ToString(); textBox4.Text = drc[1]["Qkey"].ToString(); qkey1 = drc[0]["Qkey"].ToString(); qkey2 = drc[1]["Qkey"].ToString(); tmjg = int.Parse(textBox1.Text.Trim().ToString()); wctm = int.Parse(textBox2.Text.Trim().ToString()); Hook_Start(); } #region 自定义事件 public void Hook_Start() { // 安装键盘钩子 if (hHook == 0) { KeyBoardHookProcedure = new HookProc(KeyBoardHookProc); hHook = SetWindowsHookEx(WH_KEYBOARD_LL, KeyBoardHookProcedure, GetModuleHandle(Process.GetCurrentProcess().MainModule.ModuleName), 0); //如果设置钩子失败. if (hHook == 0) { Hook_Clear(); //throw new Exception("设置Hook失败!"); } } } //取消钩子事件 public void Hook_Clear() { bool retKeyboard = true; if (hHook != 0) { retKeyboard = UnhookWindowsHookEx(hHook); hHook = 0; } //如果去掉钩子失败. if (!retKeyboard) throw new Exception("UnhookWindowsHookEx failed."); } //这里可以添加自己想要的信息处理 public static int KeyBoardHookProc(int nCode, int wParam, IntPtr lParam) { if (nCode >= 0) { KeyBoardHookStruct kbh = (KeyBoardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyBoardHookStruct)); if (getHookProc(qkey1, kbh.vkCode, (int)Control.ModifierKeys)) { MessageBox.Show("测试1!");//在这里执行timer1.Start()方法 无法让计时器显示，郁闷 timer1.Start(); return 1; } if (getHookProc(qkey2, kbh.vkCode, (int)Control.ModifierKeys)) { MessageBox.Show("测试2!"); return 1; } } return CallNextHookEx(hHook, nCode, wParam, lParam); } #endregion /// <summary> /// 判断组合按键是否正确 /// </summary> /// <param name="qk">快捷键设定</param> /// <param name="vkc">监听到的按键</param> /// <param name="modk">监听到的指示键</param> /// <returns></returns> public static bool getHookProc(string qk, int vkc, int modk) { //解析设定键 qk = qk.Trim(); string[] aqk = qk.Split('+'); string strvk = aqk[aqk.Length - 1].ToString(); int mkCount = 0; if (aqk.Length > 1) { for (int i = 0; i < aqk.Length - 1; i++) { if (aqk[i].Trim() == "Ctrl") { mkCount = mkCount + (int)Keys.Control; } if (aqk[i].Trim() == "Alt") { mkCount = mkCount + (int)Keys.Alt; } if (aqk[i].Trim() == "Shift") { mkCount = mkCount + (int)Keys.Shift; } } } if (mkCount > 0) { if (vkc == System.Text.Encoding.ASCII.GetBytes(strvk)[0] && modk == mkCount) { return true; } } else { if (vkc == System.Text.Encoding.ASCII.GetBytes(strvk)[0]) { return true; } } return false; } private void Form1_FormClosed(object sender, FormClosedEventArgs e) { Hook_Clear(); } private void timer1_Tick(object sender, EventArgs e) { if (second == 0) { if (minute == 0) { if (hour == 0) { timer1.Stop();//时间到 return; } else { hour--; minute = 59; second = 59; } } else { minute--; second = 59; } } else { second--; } lbTime.Text = hour.ToString() + ":" + minute.ToString() + ":" + second.ToString(); textBox6.Text = hour.ToString() + ":" + minute.ToString() + ":" + second.ToString(); } }}