c# 全局鼠标钩子的实现代码，有需要的朋友可以参考下。

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;
namespace 钩子
{
    publicpartial class Form1 : Form
    {
       public delegate int HookProc(int nCode, IntPtr wParam, IntPtrlParam);
       //定义钩子句柄
       public static int hHook = 0;
       //定义钩子类型
       public const int WH_MOUSE_LL =14;
       public HookProc MyProcedure;
       //安装钩子
       [DllImport("user32.dll", CharSet =CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
       public static extern int SetWindowsHookEx(int idHook, HookProclpfn, IntPtr hInstance, int threadId);
       //卸载钩子
       [DllImport("user32.dll", CharSet =CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
       public static extern bool UnhookWindowsHookEx(intidHook);
       //调用下一个钩子
       [DllImport("user32.dll", CharSet =CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
       public static extern int CallNextHookEx(int idHook, int nCode,IntPtr wParam, IntPtrlParam);
       public Form1()
       {
           InitializeComponent();
       }
       private void button1_Click(object sender,EventArgs e)
       {
           if(hHook == 0)
           {
               MyProcedure = new HookProc(this.MouseHookProc);
               //这里挂节钩子
               hHook = SetWindowsHookEx(WH_MOUSE_LL, MyProcedure,Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().GetModules()[0]),0);
               if(hHook == 0 )
               {
                   MessageBox.Show("SetWindowsHookEx Failed");
                   return;
               }
               button1.Text = "卸载钩子";
           }
           else
           {
               bool ret = UnhookWindowsHookEx(hHook);
               if(ret == false )
               {
                   MessageBox.Show("UnhookWindowsHookEx Failed");
                   return;
               }
               hHook = 0;
               button1.Text = "安装钩子";
           }
       }
 
       public int MouseHookProc(int nCode, IntPtrwParam, IntPtr lParam)
       {
          
           MouseHookStruct MyMouseHookStruct =(MouseHookStruct)Marshal.PtrToStructure(lParam,typeof(MouseHookStruct));
           if (nCode < 0)
           {
               return CallNextHookEx(hHook, nCode, wParam, lParam);
           }
           else
           {
               String strCaption = "x = " + MyMouseHookStruct.pt.x.ToString("d")+"  y = " +MyMouseHookStruct.pt.y.ToString("d");
               this.Text = strCaption;
               return CallNextHookEx(hHook, nCode, wParam, lParam);
           }
       }
   }
   [StructLayout(LayoutKind.Sequential)]
    public classPOINT
    {
       public int x;
       public int y;
    }
   [StructLayout(LayoutKind.Sequential)]
    public classMouseHookStruct
    {
       public POINT pt;
       public int hwnd;
       public int wHitTestCode;
       public int dwExtraInfo;
   }
}

说明：全局钩子，在vs05中debug会总是说钩子失败，但直接运行是可以挂上钩子的。
SetWindowsHookEx(WH_MOUSE_LL, MyProcedure, Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().GetModules()[0]),0);

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