using System;
using System.Runtime.InteropServices;
using System.Reflection;
using System.Threading;
using System.Windows.Forms;
using System.Diagnostics;
using System.Collections.Generic;
using System.Drawing;
namespace MouseHookInfor
{
public class MouseHook
{
private const int WM_MOUSEMOVE = 0x200;
private const int WM_LBUTTONDOWN = 0x201;
private const int WM_RBUTTONDOWN = 0x204;
private const int WM_MBUTTONDOWN = 0x207;
private const int WM_LBUTTONUP = 0x202;
private const int WM_RBUTTONUP = 0x205;
private const int WM_MBUTTONUP = 0x208;
private const int WM_LBUTTONDBLCLK = 0x203;
private const int WM_RBUTTONDBLCLK = 0x206;
private const int WM_MBUTTONDBLCLK = 0x209;
//全局的事件
public event MouseEventHandler OnMouseActivity;
static int hMouseHook = 0; //鼠标钩子句柄
//鼠标常量
public const int WH_MOUSE_LL = 14; //mouse hook constant
HookProc MouseHookProcedure; //声明鼠标钩子事件类型.
//声明一个Point的封送类型
[StructLayout(LayoutKind.Sequential)]
public class POINT
{
public int x;
public int y;
}
//声明鼠标钩子的封送结构类型
[StructLayout(LayoutKind.Sequential)]
public class MouseHookStruct
{
public POINT pt;
public int hWnd;
public int wHitTestCode;
public int dwExtraInfo;
}
//装置钩子的函数
[DllImport("user32.dll ", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId);
//卸下钩子的函数
[DllImport("user32.dll ", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
public static extern bool UnhookWindowsHookEx(int idHook);
//下一个钩挂的函数
[DllImport("user32.dll ", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
public static extern int CallNextHookEx(int idHook, int nCode, Int32 wParam, IntPtr lParam);
[DllImport("kernel32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
private static extern IntPtr GetModuleHandle(string lpModuleName);
public delegate int HookProc(int nCode, Int32 wParam, IntPtr lParam);
///
/// 墨认的构造函数构造当前类的实例.
///
public MouseHook()
{
Start();
}
//析构函数.
~MouseHook()
{
Stop();
}
public void Start()
{
//安装鼠标钩子
if (hMouseHook == 0)
{
Process curProcess = Process.GetCurrentProcess();
ProcessModule curModule = curProcess.MainModule;
//生成一个HookProc的实例.
MouseHookProcedure = new HookProc(MouseHookProc);
hMouseHook = SetWindowsHookEx(WH_MOUSE_LL, MouseHookProcedure, GetModuleHandle(curModule.ModuleName), 0);
//如果装置失败停止钩子
if (hMouseHook == 0)
{
Stop();
throw new Exception("SetWindowsHookEx failed. ");
}
}
}
public void Stop()
{
bool retMouse = true;
if (hMouseHook != 0)
{
retMouse = UnhookWindowsHookEx(hMouseHook);
hMouseHook = 0;
}
//如果卸下钩子失败
if (!(retMouse)) throw new Exception("UnhookWindowsHookEx failed. ");
}
private int MouseHookProc(int nCode, Int32 wParam, IntPtr lParam)
{
//如果正常运行并且用户要监听鼠标的消息
if ((nCode >= 0) && (OnMouseActivity != null))
{
MouseButtons button = MouseButtons.None;
int clickCount = 0;
switch (wParam)
{
case WM_LBUTTONDOWN://鼠标左键down
button = MouseButtons.Left;
clickCount = 1;
break;
case WM_LBUTTONUP://鼠标左键up
//button = MouseButtons.Left;
//clickCount = 1;
break;
case WM_LBUTTONDBLCLK://鼠标左键双击
button = MouseButtons.Left;
clickCount = 2;
break;
case WM_RBUTTONDOWN://鼠标右键down
button = MouseButtons.Right;
clickCount = 1;
break;
case WM_RBUTTONUP://鼠标右键up
button = MouseButtons.Right;
clickCount = 1;
break;
case WM_RBUTTONDBLCLK://鼠标右键双击
button = MouseButtons.Right;
clickCount = 2;
break;
}
//从回调函数中得到鼠标的信息
MouseHookStruct MyMouseHookStruct = (MouseHookStruct)Marshal.PtrToStructure(lParam, typeof(MouseHookStruct));
MouseEventArgs e = new MouseEventArgs(button, clickCount, MyMouseHookStruct.pt.x, MyMouseHookStruct.pt.y, 0);
OnMouseActivity(this, e);
}
return CallNextHookEx(hMouseHook, nCode, wParam, lParam);
}
}
}
主程序代码如下:
public Form1()
{
MouseHook mh;//鼠标钩子
mh = new MouseHook();
mh.OnMouseActivity += mh_MouseActivity;
}
void mh_MouseActivity(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left && e.Clicks == 1)
{
...........
}
}
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