using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Linq;
using?System.Text;
using?System.Windows.Forms;
using?System.Runtime.InteropServices;
using?System.Diagnostics;

namespace?WindowsFormsApplication1
{
????public?partial?class?Form1?:?Form
????{
????????[System.Runtime.InteropServices.DllImport（“user32“）]
????????private?static?extern?int?mouse_event（int?dwFlags?int?dx?int?dy?int?cButtons?int?dwExtraInfo）;
????????const?int?MOUSEEVENTF_LEFTDOWN?=?0x0002;
????????const?int?MOUSEEVENTF_LEFTUP?=?0x0004;
????????[DllImport（“user32.dll“）]
????????public?static?extern?int?SetWindowsHookEx（int?idHook?HookProc?hProc?IntPtr?hMod?int?dwThreadId）;
????????[DllImport（“user32.dll“）]
????????public?static?extern?int?CallNextHookEx（int?hHook?int?nCode?IntPtr?wParam?IntPtr?lParam）;
????????[DllImport（“user32.dll“）]
????????public?static?extern?bool?UnhookWindowsHookEx（int?hHook）;
????????[DllImport（“kernel32.dll“）]//獲取模塊句柄??
????????public?static?extern?IntPtr?GetModuleHandle（string?lpModuleName）;
????????public?struct?KeyInfoStruct
????????{
????????????public?int?vkCode;????????//按鍵鍵碼
????????????public?int?scanCode;
????????????public?int?flags;???????//鍵盤是否按下的標志
????????????public?int?time;
????????????public?int?dwExtraInfo;
????????}
????????private?const?int?WH_KEYBOARD_LL?=?13;??????//鉤子類型?全局鉤子
????????private?const?int?WM_KEYUP?=?0x101;?????//按鍵抬起
????????private?const?int?WM_KEYDOWN?=?0x100;???????//按鍵按下

????????public?delegate?int?HookProc（int?nCode?IntPtr?wParam?IntPtr?lParam）;
????????bool?bStopMsg?=?false;
????????int?hHook?=?0;
????????GCHandle?gc;
????????string?b?=?“F1“;
????????public?int?MethodHookProc（int?nCode?IntPtr?wParam?IntPtr?lParam）
????????{
????????????if?（nCode?>=?0）
????????????{
????????????????KeyInfoStruct?inputInfo?=?（KeyInfoStruct）Marshal.PtrToStructure（lParam?typeof（KeyInfoStruct））;
????????????????if?（wParam?==?（IntPtr）WM_KEYDOWN）
????????????????{//如果按鍵按下
????????????????????//??MessageBox.Show（（（Keys）inputInfo.vkCode）.ToString（））;
????????????????????if?（（（Keys）inputInfo.vkCode）.ToString（）?==?b）
????????????????????????if?（timer1.Enabled?==?true）
????????????????????????{
????????????????????????????timer1.Enabled?=?false;
????????????????????????????this.label3.Text?=?“[已停止]“;
????????????????????????}
????????????????????????else
????????????????????????{
????????????????????????????timer1.Enabled?=?true;
????????????????????????????this.label3.Text?=?“[已啟動]“;
????????????????????????}
????????????????}
????????????????if?（bStopMsg）?return?1;
????????????}
????????????return?CallNextHookEx（hHook?nCode?wParam?lParam）;//繼續傳遞消息
????????}

????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????????this.comboBox1.SelectedIndex?=?0;//默認索引值
????????????this.comboBox1.DropDownstyle?=?ComboBoxstyle.DropDownList;//僅在列表中選擇
????????????th