鼠标钩子代码,CSharp代码库,德仔网

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【CSharp】鼠标钩子
作者:superman_msc / 发布于2015/2/15/ 881

	using System;
	using System.Collections.Generic;
	using System.ComponentModel;
	using System.Data;
	using System.Drawing;
	using System.Linq;
	using System.Reflection;
	using System.Runtime.InteropServices;
	using System.Text;
	using System.Windows.Forms;
	
	namespace app01
	{
	 public partial class Form1 : Form
	 {
	 public delegate int HookProc(int nCode, IntPtr wParam, IntPtr lParam);
	 //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, HookProc lpfn, IntPtr hInstance, int threadId);
	 //卸载钩子
	 [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
	 public static extern bool UnhookWindowsHookEx(int idHook);
	 //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, IntPtr lParam);
	
	 [StructLayout(LayoutKind.Sequential)]
	 public class POINT
	 {
	 public int x;
	 public int y;
	 }
	 [StructLayout(LayoutKind.Sequential)]
	 public class MouseHookStruct
	 {
	 public POINT pt;
	 public int hwnd;
	 public int wHitTestCode;
	 public int dwExtraInfo;
	 }
	
	 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, IntPtr wParam, 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);
	 }
	 }
	
	
	 }
	}
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