06-系统操作/屏蔽鼠标按键/NullificationMouse/MouseHook.cs

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

namespace NullificationMouse
{
    class MouseHook
    {
        #region 声明的变量
        public const int WH_MOUSE_LL = 14;
        public const int WM_MOUSEMOVE = 0x200;
        public const int WM_LBUTTONDOWN = 0x201;
        public const int WM_RBUTTONDOWN = 0x204;
        public const int WM_MBUTTONDOWN = 0x207;
        public const int WM_LBUTTONUP = 0x202;
        public const int WM_RBUTTONUP = 0x205;
        public const int WM_MBUTTONUP = 0x208;
        public const int WM_LBUTTONDBLCLK = 0x203;
        public const int WM_RBUTTONDBLCLK = 0x206;
        public const int WM_MBUTTONDBLCLK = 0x209;
        public const int WM_MOUSEWHEEL = 0x020A;
        public IntPtr mouseHandler = IntPtr.Zero;
        public event MouseEventHandler MouseDown;
        //该变量标识屏蔽项
        public static int flag = 0;

        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall, SetLastError = true)]
        //声明一个钩子函数
        public static extern int SetWindowsHookEx(int HookType, HOOKPROCEDURE methodAddress, IntPtr handler, int dwThreadId);

        //释放钩子函数
        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall, SetLastError = true)]
        public static extern bool UnhookWindowsHookEx(IntPtr idHook);

        //声明钩子函数地址
        public delegate int HOOKPROCEDURE(int nCode, Int32 wParam, IntPtr IParam);

        private HOOKPROCEDURE m_MouseHookProcedure;

        [StructLayout(LayoutKind.Sequential)]
        protected class MouseHookStruct
        {
            public POINT pt;
            public int mouseData;
            public int flags;
            public int time;
            public int dwExtraInfo;
        }

        [StructLayout(LayoutKind.Sequential)]
        protected class POINT
        {
            public int x;
            public int y;
        }