C#简单鼠标键盘钩子KMHook

简介：由三个文件构成Pinvo.cs、KeyboardHook.cs、MouseHook.cs

　　　　Pinvo.cs 是KeyboardHook与MouseHook需要的一些常量消息的定义

　　　　KeyboardHook 是实现的一个WH_KEYBOARD_LL类型的全局键盘钩子(SetWindowsHookExA函数最后一个参数threadId=0)

　　　　MouseHook 是实现的一个WH_MOUSE_LL类型的全局鼠标按键钩子(SetWindowsHookExA函数最后一个参数threadId=0)

Pinvo

 using System;

 using System.Collections.Generic;

 using System.Linq;

 using System.Text;

 using System.Threading.Tasks;

 namespace KMHook

 {

     public class HookType

     {

         public const int WH_CALLWNDPROC = ;

         public const int WH_KEYBOARD_LL = ;

         public const int WH_MOUSE_LL = ;

     }

     public class Messages

     {

         public const int WM_MOUSEHOVER = 0x02A1;

         public const int WM_MOUSELEAVE = 0x02A3;

         public const int WM_DEVICECHANGE = 0x0219;

         public const int WM_DDE_FIRST = 0x03E0;

         public const int WM_BB_ENABLE = 0x00000001;

         public const int WM_BB_BLURREGION = 0x00000002;

         public const int WM_BB_TRANSITIONONMAXIMIZED = 0x00000004;

         public const int WM_CLOAKED_APP = 0x00000001;

         public const int WM_CLOAKED_SHELL = 0x00000002;

         public const int WM_CLOAKED_INHERITED = 0x00000004;

         public const int WM_TNP_RECTDESTINATION = 0x00000001;

         public const int WM_TNP_RECTSOURCE = 0x00000002;

         public const int WM_TNP_OPACITY = 0x00000004;

         public const int WM_TNP_VISIBLE = 0x00000008;

         public const int WM_TNP_SOURCECLIENTAREAONLY = 0x00000010;

         public const int WM_SIT_DISPLAYFRAME = 0x00000001;

         public const int WM_HELP = 0x0011;

         public const int WM_IME_REPORT = 0x0280;

         public const int WM_CONVERTREQUESTEX = 0x0109;

         public const int WM_WNT_CONVERTREQUESTEX = 0x0109;

         public const int WM_CONVERTREQUEST = 0x010A;

         public const int WM_CONVERTRESULT = 0x010B;

         public const int WM_INTERIM = 0x010C;

         public const int WM_IMEKEYDOWN = 0x290;

         public const int WM_IMEKEYUP = 0x291;

         public const int WM_RASDIALEVENT = 0xCCCD;

         public const int WM_CONTEXTMENU = 0x007B;

         public const int WM_UNICHAR = 0x0109;

         public const int WM_PRINTCLIENT = 0x0318;

         public const int WM_NOTIFY = 0x004E;

         public const int WM_HANDLED_MASK = 0x1;

         public const int WM_TABLET_DEFBASE = 0x02C0;

         public const int WM_TABLET_MAXOFFSET = 0x20;

         public const int WM_NULL = 0x0000;

         public const int WM_CREATE = 0x0001;

         public const int WM_DESTROY = 0x0002;

         public const int WM_MOVE = 0x0003;

         public const int WM_SIZE = 0x0005;

         public const int WM_ACTIVATE = 0x0006;

         public const int WM_SETFOCUS = 0x0007;

         public const int WM_KILLFOCUS = 0x0008;

         public const int WM_ENABLE = 0x000A;

         public const int WM_SETREDRAW = 0x000B;

         public const int WM_SETTEXT = 0x000C;

         public const int WM_GETTEXT = 0x000D;

         public const int WM_GETTEXTLENGTH = 0x000E;

         public const int WM_PAINT = 0x000F;

         public const int WM_CLOSE = 0x0010;

         public const int WM_QUERYENDSESSION = 0x0011;

         public const int WM_QUERYOPEN = 0x0013;

         public const int WM_ENDSESSION = 0x0016;

         public const int WM_QUIT = 0x0012;

         public const int WM_ERASEBKGND = 0x0014;

         public const int WM_SYSCOLORCHANGE = 0x0015;

         public const int WM_SHOWWINDOW = 0x0018;

         public const int WM_WININICHANGE = 0x001A;

         public const int WM_DEVMODECHANGE = 0x001B;

         public const int WM_ACTIVATEAPP = 0x001C;

         public const int WM_FONTCHANGE = 0x001D;

         public const int WM_TIMECHANGE = 0x001E;

         public const int WM_CANCELMODE = 0x001F;

         public const int WM_SETCURSOR = 0x0020;

         public const int WM_MOUSEACTIVATE = 0x0021;

         public const int WM_CHILDACTIVATE = 0x0022;

         public const int WM_QUEUESYNC = 0x0023;

         public const int WM_GETMINMAXINFO = 0x0024;

         public const int WM_PAINTICON = 0x0026;

         public const int WM_ICONERASEBKGND = 0x0027;

         public const int WM_NEXTDLGCTL = 0x0028;

         public const int WM_SPOOLERSTATUS = 0x002A;

         public const int WM_DRAWITEM = 0x002B;

         public const int WM_MEASUREITEM = 0x002C;

         public const int WM_DELETEITEM = 0x002D;

         public const int WM_VKEYTOITEM = 0x002E;

         public const int WM_CHARTOITEM = 0x002F;

         public const int WM_SETFONT = 0x0030;

         public const int WM_GETFONT = 0x0031;

         public const int WM_SETHOTKEY = 0x0032;

         public const int WM_GETHOTKEY = 0x0033;

         public const int WM_QUERYDRAGICON = 0x0037;

         public const int WM_COMPAREITEM = 0x0039;

         public const int WM_GETOBJECT = 0x003D;

         public const int WM_COMPACTING = 0x0041;

         public const int WM_COMMNOTIFY = 0x0044;

         public const int WM_WINDOWPOSCHANGING = 0x0046;

         public const int WM_WINDOWPOSCHANGED = 0x0047;

         public const int WM_POWER = 0x0048;

         public const int WM_COPYDATA = 0x004A;

         public const int WM_CANCELJOURNAL = 0x004B;

         public const int WM_INPUTLANGCHANGEREQUEST = 0x0050;

         public const int WM_INPUTLANGCHANGE = 0x0051;

         public const int WM_TCARD = 0x0052;

         public const int WM_USERCHANGED = 0x0054;

         public const int WM_NOTIFYFORMAT = 0x0055;

         public const int WM_STYLECHANGING = 0x007C;

         public const int WM_STYLECHANGED = 0x007D;

         public const int WM_DISPLAYCHANGE = 0x007E;

         public const int WM_GETICON = 0x007F;

         public const int WM_SETICON = 0x0080;

         public const int WM_NCCREATE = 0x0081;

         public const int WM_NCDESTROY = 0x0082;

         public const int WM_NCCALCSIZE = 0x0083;

         public const int WM_NCHITTEST = 0x0084;

         public const int WM_NCPAINT = 0x0085;

         public const int WM_NCACTIVATE = 0x0086;

         public const int WM_GETDLGCODE = 0x0087;

         public const int WM_SYNCPAINT = 0x0088;

         public const int WM_NCMOUSEMOVE = 0x00A0;

         public const int WM_NCLBUTTONDOWN = 0x00A1;

         public const int WM_NCLBUTTONUP = 0x00A2;

         public const int WM_NCLBUTTONDBLCLK = 0x00A3;

         public const int WM_NCRBUTTONDOWN = 0x00A4;

         public const int WM_NCRBUTTONUP = 0x00A5;

         public const int WM_NCRBUTTONDBLCLK = 0x00A6;

         public const int WM_NCMBUTTONDOWN = 0x00A7;

         public const int WM_NCMBUTTONUP = 0x00A8;

         public const int WM_NCMBUTTONDBLCLK = 0x00A9;

         public const int WM_NCXBUTTONDOWN = 0x00AB;

         public const int WM_NCXBUTTONUP = 0x00AC;

         public const int WM_NCXBUTTONDBLCLK = 0x00AD;

         public const int WM_INPUT_DEVICE_CHANGE = 0x00FE;

         public const int WM_INPUT = 0x00FF;

         public const int WM_KEYFIRST = 0x0100;

         public const int WM_CHAR = 0x0102;

         public const int WM_DEADCHAR = 0x0103;

         public const int WM_SYSCHAR = 0x0106;

         public const int WM_SYSDEADCHAR = 0x0107;

         public const int WM_KEYLAST = 0x0109;

         public const int WM_IME_STARTCOMPOSITION = 0x010D;

         public const int WM_IME_ENDCOMPOSITION = 0x010E;

         public const int WM_IME_COMPOSITION = 0x010F;

         public const int WM_IME_KEYLAST = 0x010F;

         public const int WM_INITDIALOG = 0x0110;

         public const int WM_COMMAND = 0x0111;

         public const int WM_SYSCOMMAND = 0x0112;

         public const int WM_TIMER = 0x0113;

         public const int WM_HSCROLL = 0x0114;

         public const int WM_VSCROLL = 0x0115;

         public const int WM_INITMENU = 0x0116;

         public const int WM_INITMENUPOPUP = 0x0117;

         public const int WM_GESTURE = 0x0119;

         public const int WM_GESTURENOTIFY = 0x011A;

         public const int WM_MENUSELECT = 0x011F;

         public const int WM_MENUCHAR = 0x0120;

         public const int WM_ENTERIDLE = 0x0121;

         public const int WM_MENURBUTTONUP = 0x0122;

         public const int WM_MENUDRAG = 0x0123;

         public const int WM_MENUGETOBJECT = 0x0124;

         public const int WM_UNINITMENUPOPUP = 0x0125;

         public const int WM_MENUCOMMAND = 0x0126;

         public const int WM_CHANGEUISTATE = 0x0127;

         public const int WM_UPDATEUISTATE = 0x0128;

         public const int WM_QUERYUISTATE = 0x0129;

         public const int WM_CTLCOLORMSGBOX = 0x0132;

         public const int WM_CTLCOLOREDIT = 0x0133;

         public const int WM_CTLCOLORLISTBOX = 0x0134;

         public const int WM_CTLCOLORBTN = 0x0135;

         public const int WM_CTLCOLORDLG = 0x0136;

         public const int WM_CTLCOLORSCROLLBAR = 0x0137;

         public const int WM_CTLCOLORSTATIC = 0x0138;

         public const int WM_MOUSEFIRST = 0x0200;

         //public const int WM_LBUTTONDBLCLK = 0x0203;

         //public const int WM_RBUTTONDBLCLK = 0x0206;

         //public const int WM_MBUTTONDBLCLK = 0x0209;

         public const int WM_MOUSEWHEEL = 0x020A;

         public const int WM_XBUTTONDOWN = 0x020B;

         public const int WM_XBUTTONUP = 0x020C;

         public const int WM_XBUTTONDBLCLK = 0x020D;

         public const int WM_MOUSEHWHEEL = 0x020E;

         public const int WM_MOUSELAST = 0x020E;

         public const int WM_PARENTNOTIFY = 0x0210;

         public const int WM_ENTERMENULOOP = 0x0211;

         public const int WM_EXITMENULOOP = 0x0212;

         public const int WM_NEXTMENU = 0x0213;

         public const int WM_SIZING = 0x0214;

         public const int WM_CAPTURECHANGED = 0x0215;

         public const int WM_MOVING = 0x0216;

         public const int WM_POWERBROADCAST = 0x0218;

         public const int WM_MDICREATE = 0x0220;

         public const int WM_MDIDESTROY = 0x0221;

         public const int WM_MDIACTIVATE = 0x0222;

         public const int WM_MDIRESTORE = 0x0223;

         public const int WM_MDINEXT = 0x0224;

         public const int WM_MDIMAXIMIZE = 0x0225;

         public const int WM_MDITILE = 0x0226;

         public const int WM_MDICASCADE = 0x0227;

         public const int WM_MDIICONARRANGE = 0x0228;

         public const int WM_MDIGETACTIVE = 0x0229;

         public const int WM_MDISETMENU = 0x0230;

         public const int WM_ENTERSIZEMOVE = 0x0231;

         public const int WM_EXITSIZEMOVE = 0x0232;

         public const int WM_DROPFILES = 0x0233;

         public const int WM_MDIREFRESHMENU = 0x0234;

         public const int WM_POINTERDEVICECHANGE = 0x238;

         public const int WM_POINTERDEVICEINRANGE = 0x239;

         public const int WM_POINTERDEVICEOUTOFRANGE = 0x23A;

         public const int WM_TOUCH = 0x0240;

         public const int WM_NCPOINTERUPDATE = 0x0241;

         public const int WM_NCPOINTERDOWN = 0x0242;

         public const int WM_NCPOINTERUP = 0x0243;

         public const int WM_POINTERUPDATE = 0x0245;

         public const int WM_POINTERDOWN = 0x0246;

         public const int WM_POINTERUP = 0x0247;

         public const int WM_POINTERENTER = 0x0249;

         public const int WM_POINTERLEAVE = 0x024A;

         public const int WM_POINTERACTIVATE = 0x024B;

         public const int WM_POINTERCAPTURECHANGED = 0x024C;

         public const int WM_TOUCHHITTESTING = 0x024D;

         public const int WM_POINTERWHEEL = 0x024E;

         public const int WM_POINTERHWHEEL = 0x024F;

         public const int WM_POINTERROUTEDTO = 0x0251;

         public const int WM_POINTERROUTEDAWAY = 0x0252;

         public const int WM_POINTERROUTEDRELEASED = 0x0253;

         public const int WM_IME_SETCONTEXT = 0x0281;

         public const int WM_IME_NOTIFY = 0x0282;

         public const int WM_IME_CONTROL = 0x0283;

         public const int WM_IME_COMPOSITIONFULL = 0x0284;

         public const int WM_IME_SELECT = 0x0285;

         public const int WM_IME_CHAR = 0x0286;

         public const int WM_IME_REQUEST = 0x0288;

         public const int WM_IME_KEYDOWN = 0x0290;

         public const int WM_IME_KEYUP = 0x0291;

         public const int WM_NCMOUSEHOVER = 0x02A0;

         public const int WM_NCMOUSELEAVE = 0x02A2;

         public const int WM_WTSSESSION_CHANGE = 0x02B1;

         public const int WM_TABLET_FIRST = 0x02;

         public const int WM_TABLET_LAST = 0x02;

         public const int WM_DPICHANGED = 0x02E0;

         public const int WM_DPICHANGED_BEFOREPARENT = 0x02E2;

         public const int WM_DPICHANGED_AFTERPARENT = 0x02E3;

         public const int WM_GETDPISCALEDSIZE = 0x02E4;

         public const int WM_CUT = 0x0300;

         public const int WM_COPY = 0x0301;

         public const int WM_PASTE = 0x0302;

         public const int WM_CLEAR = 0x0303;

         public const int WM_UNDO = 0x0304;

         public const int WM_RENDERFORMAT = 0x0305;

         public const int WM_RENDERALLFORMATS = 0x0306;

         public const int WM_DESTROYCLIPBOARD = 0x0307;

         public const int WM_DRAWCLIPBOARD = 0x0308;

         public const int WM_PAINTCLIPBOARD = 0x0309;

         public const int WM_VSCROLLCLIPBOARD = 0x030A;

         public const int WM_SIZECLIPBOARD = 0x030B;

         public const int WM_ASKCBFORMATNAME = 0x030C;

         public const int WM_CHANGECBCHAIN = 0x030D;

         public const int WM_HSCROLLCLIPBOARD = 0x030E;

         public const int WM_QUERYNEWPALETTE = 0x030F;

         public const int WM_PALETTEISCHANGING = 0x0310;

         public const int WM_PALETTECHANGED = 0x0311;

         public const int WM_HOTKEY = 0x0312;

         public const int WM_PRINT = 0x0317;

         public const int WM_APPCOMMAND = 0x0319;

         public const int WM_THEMECHANGED = 0x031A;

         public const int WM_CLIPBOARDUPDATE = 0x031D;

         public const int WM_DWMCOMPOSITIONCHANGED = 0x031E;

         public const int WM_DWMNCRENDERINGCHANGED = 0x031F;

         public const int WM_DWMCOLORIZATIONCOLORCHANGED = 0x0320;

         public const int WM_DWMWINDOWMAXIMIZEDCHANGE = 0x0321;

         public const int WM_DWMSENDICONICTHUMBNAIL = 0x0323;

         public const int WM_DWMSENDICONICLIVEPREVIEWBITMAP = 0x0326;

         public const int WM_GETTITLEBARINFOEX = 0x033F;

         public const int WM_HANDHELDFIRST = 0x0358;

         public const int WM_HANDHELDLAST = 0x035F;

         public const int WM_AFXFIRST = 0x0360;

         public const int WM_AFXLAST = 0x037F;

         public const int WM_PENWINFIRST = 0x0380;

         public const int WM_PENWINLAST = 0x038F;

         public const int WM_APP = 0x8000;

         public const int WM_USER = 0x0400;

         public const int WM_CT_REPEAT_FIRST_FIELD = 0x10;

         public const int WM_CT_BOTTOM_FIELD_FIRST = 0x20;

         public const int WM_CT_TOP_FIELD_FIRST = 0x40;

         public const int WM_CT_INTERLACED = 0x80;

         public const int WM_MAX_VIDEO_STREAMS = 0x3;

         public const int WM_MAX_STREAMS = 0x3;

         public const int WM_KEYDOWN = 0x100;

         public const int WM_KEYUP = 0x101;

         public const int WM_SYSKEYDOWN = 0x104;

         public const int WM_SYSKEYUP = 0x105;

         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;

     }

 }

KeyboardHook

using System;

using System.Runtime.InteropServices;

namespace KMHook

{

    public class KeyboardHook : IDisposable

    {

        [DllImport("user32.dll")]

        private static extern int SetWindowsHookExA(int idHook, KeyboardDelegateHandler lpfn, IntPtr hInstance, int threadId);

        [DllImport("user32.dll")]

        private static extern int CallNextHookEx(int idHook, int nCode, int wParam, KeyData lParam);

        [DllImport("user32.dll")]

        public static extern bool UnhookWindowsHookEx(int idHook);

        private int hookType = ;

        private delegate int KeyboardDelegateHandler(int nCode, int wParam, KeyData lParam);

        public delegate bool KeyDelegate(KeyData keyData, int message);

        public delegate bool KeyUpUpDelegate(KeyData keyData);

        public delegate bool KeyDownDelegate(KeyData keyData);

        public event KeyDelegate keyEvent;

        public event KeyUpUpDelegate keyUpEvent;

        public event KeyUpUpDelegate keyDownEvent;

        public bool IsHooked

        {

            get

            {

                if (hookType != )

                {

                    return true;

                }

                return false;

            }

        }

        /// <summary>

        /// vkCode 表示1到254间的虚拟键盘码

        /// scanCode 表示硬件扫描码

        /// </summary>

        [StructLayout(LayoutKind.Sequential)]

        public class KeyData

        {

            public int vkCode;

            public int scanCode;

            public int flags;

            public int time;

            public int dwExtraInfo;

        }

        public void SetupHook()

        {

            hookType = SetWindowsHookExA(HookType.WH_KEYBOARD_LL, KMProc, IntPtr.Zero, );

            if (hookType == )

            {

                RemoveHook();

            }

        }

        private void RemoveHook()

        {

            bool retKeyboard = UnhookWindowsHookEx(hookType);

            if (retKeyboard)

            {

                hookType = ;

            }

        }

        private int KMProc(int nCode, int wParam, KeyData lParam)

        {

            if (!(nCode >= ))

            {

                return CallNextHookEx(hookType, nCode, wParam, lParam);

            }

            bool shouldBlock = false;

            if (keyEvent != null)

            {

                shouldBlock = keyEvent.Invoke(lParam, wParam);

            }

            if (wParam == Messages.WM_KEYDOWN ||

                wParam == Messages.WM_SYSKEYDOWN)

            {

                if (keyDownEvent != null)

                {

                    shouldBlock = keyDownEvent.Invoke(lParam);

                }

            }

            if (wParam == Messages.WM_KEYUP ||

                wParam == Messages.WM_SYSKEYUP)

            {

                if (keyUpEvent != null)

                {

                    shouldBlock = keyUpEvent.Invoke(lParam);

                }

            }

            if (!shouldBlock)

            {

                return CallNextHookEx(hookType, nCode, wParam, lParam);

            }

            return ;

        }

        public void Dispose()

        {

            RemoveHook();

        }

    }

}

MouseHook

using System;

using System.Runtime.InteropServices;

namespace KMHook

{

    public class MouseHook: IDisposable

    {

        [DllImport("user32.dll")]

        private static extern int SetWindowsHookExA(int idHook, MouseDelegateHandler lpfn, IntPtr hInstance, int threadId);

        [DllImport("user32.dll")]

        private static extern bool UnhookWindowsHookEx(int idHook);

        [DllImport("user32.dll")]

        private static extern int CallNextHookEx(int idHook, int nCode, int wParam, MouseData lParam);

        private delegate int MouseDelegateHandler(int nCode, int wParam, MouseData lParam);

        public delegate bool MouseDelegate(MouseData pt, int message);

        public event MouseDelegate mouseEvent;

        private int hookType = ;

        [StructLayout(LayoutKind.Sequential)]

        public class Point

        {

            public int x;

            public int y;

        }

        [StructLayout(LayoutKind.Sequential)]

        public class MouseData

        {

            public Point pt;

            public int hWnd;

            public int wHitTestCode;

            public int dwExtraInfo;

        }

        public bool IsHooked

        {

            get

            {

                if (hookType != )

                {

                    return true;

                }

                return false;

            }

        }

        public void SetupHook()

        {

            hookType = SetWindowsHookExA(HookType.WH_MOUSE_LL, KMProc, IntPtr.Zero, );

            if (hookType == )

            {

                RemoveHook();

            }

        }

        private void RemoveHook()

        {

            bool retKeyboard = UnhookWindowsHookEx(hookType);

            if (retKeyboard)

            {

                hookType = ;

            }

        }

        private int KMProc(int nCode, int wParam, MouseData lParam)

        {

            if (!(nCode >= ))

            {

                return CallNextHookEx(hookType, nCode, wParam, lParam);

            }

            bool shouldBlock = false;

            if (mouseEvent != null)

            {

                shouldBlock = mouseEvent.Invoke(lParam, wParam);

            }

            if (!shouldBlock)

            {

                return CallNextHookEx(hookType, nCode, wParam, lParam);

            }

            return ;

        }

        public void Dispose()

        {

            RemoveHook();

        }

    }

}

代码使用情况

KeyboardHook keyboardHook = new KeyboardHook();

keyboardHook.keyEvent += (keyData, message) =>

{

    if (message == Messages.WM_KEYDOWN || message == Messages.WM_SYSKEYDOWN)

    {

        if (keyData.vkCode == (int) Keys.A) Console.WriteLine("key a pressed.");

        if (keyData.vkCode == (int) Keys.F1) Console.WriteLine("f1 pressed.");

        if (keyData.vkCode ==  (int) Keys.Delete) Console.WriteLine("delete pressed.");

        if (keyData.vkCode == (int) Keys.LControlKey) Console.WriteLine("left control pressed.");

    }

    return true;

};

keyboardHook.SetupHook();

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