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Global Mouse and Keyboard Library

, 8 Aug 2008
Easy-to-use library with global mouse and keyboard hooks and simulators.
MouseKeyboardLib2003.zip
MouseKeyboardLibrary11
GlobalMacroRecorder
App.ico
bin
Debug
GlobalMacroRecorder.exe
MouseKeyboardLibrary.dll
GlobalMacroRecorder.csproj.user
MouseKeyboardLibrary
bin
Debug
MouseKeyboardLibrary.dll
MouseKeyboardLibrary.csproj.user
SampleApplication
App.ico
bin
Debug
MouseKeyboardLibrary.dll
SampleApplication.exe
SampleApplication.csproj.user
MouseKeyboardLib2005.zip
MouseKeyboardLibrary20
GlobalMacroRecorder
bin
Debug
GlobalMacroRecorder.exe
GlobalMacroRecorder.vshost.exe
MouseKeyboardLibrary.dll
Properties
Settings.settings
MouseKeyboardLibrary
bin
Debug
MouseKeyboardLibrary.dll
Properties
SampleApplication
bin
Debug
MouseKeyboardLibrary.dll
SampleApplication.exe
SampleApplication.vshost.exe
Properties
Settings.settings
MouseKeyboardLib2008.zip
MouseKeyboardLibrary
GlobalMacroRecorder
bin
Debug
GlobalMacroRecorder.exe
GlobalMacroRecorder.vshost.exe
GlobalMacroRecorder.vshost.exe.manifest
MouseKeyboardLibrary.dll
Properties
Settings.settings
MouseKeyboardLibrary
bin
Debug
MouseKeyboardLibrary.dll
Properties
SampleApplication
bin
Debug
MouseKeyboardLibrary.dll
SampleApplication.exe
SampleApplication.vshost.exe
SampleApplication.vshost.exe.manifest
Properties
Settings.settings
using System;
using System.Text;
using System.Runtime.InteropServices;
using System.Reflection;
using System.Windows.Forms;

namespace MouseKeyboardLibrary
{

    /// <summary>
    /// Abstract base class for Mouse and Keyboard hooks
    /// </summary>
    public abstract class GlobalHook
    {

        #region Windows API Code

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

        [StructLayout(LayoutKind.Sequential)]
        protected class MouseHookStruct
        {
            public POINT pt;
            public int hwnd;
            public int wHitTestCode;
            public int dwExtraInfo;
        }

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

        [StructLayout(LayoutKind.Sequential)]
        protected class KeyboardHookStruct
        {
            public int vkCode;
            public int scanCode;
            public int flags;
            public int time;
            public int dwExtraInfo;
        }

        [DllImport("user32.dll", CharSet = CharSet.Auto,
           CallingConvention = CallingConvention.StdCall, SetLastError = true)]
        protected static extern int SetWindowsHookEx(
            int idHook,
            HookProc lpfn,
            IntPtr hMod,
            int dwThreadId);

        [DllImport("user32.dll", CharSet = CharSet.Auto,
            CallingConvention = CallingConvention.StdCall, SetLastError = true)]
        protected static extern int UnhookWindowsHookEx(int idHook);


        [DllImport("user32.dll", CharSet = CharSet.Auto,
             CallingConvention = CallingConvention.StdCall)]
        protected static extern int CallNextHookEx(
            int idHook,
            int nCode,
            int wParam,
            IntPtr lParam);

        [DllImport("user32")]
        protected static extern int ToAscii(
            int uVirtKey,
            int uScanCode,
            byte[] lpbKeyState,
            byte[] lpwTransKey,
            int fuState);

        [DllImport("user32")]
        protected static extern int GetKeyboardState(byte[] pbKeyState);

        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
        protected static extern short GetKeyState(int vKey);

        protected delegate int HookProc(int nCode, int wParam, IntPtr lParam);

        protected const int WH_MOUSE_LL = 14;
        protected const int WH_KEYBOARD_LL = 13;

        protected const int WH_MOUSE = 7;
        protected const int WH_KEYBOARD = 2;
        protected const int WM_MOUSEMOVE = 0x200;
        protected const int WM_LBUTTONDOWN = 0x201;
        protected const int WM_RBUTTONDOWN = 0x204;
        protected const int WM_MBUTTONDOWN = 0x207;
        protected const int WM_LBUTTONUP = 0x202;
        protected const int WM_RBUTTONUP = 0x205;
        protected const int WM_MBUTTONUP = 0x208;
        protected const int WM_LBUTTONDBLCLK = 0x203;
        protected const int WM_RBUTTONDBLCLK = 0x206;
        protected const int WM_MBUTTONDBLCLK = 0x209;
        protected const int WM_MOUSEWHEEL = 0x020A;
        protected const int WM_KEYDOWN = 0x100;
        protected const int WM_KEYUP = 0x101;
        protected const int WM_SYSKEYDOWN = 0x104;
        protected const int WM_SYSKEYUP = 0x105;

        protected const byte VK_SHIFT = 0x10;
        protected const byte VK_CAPITAL = 0x14;
        protected const byte VK_NUMLOCK = 0x90;

        protected const byte VK_LSHIFT = 0xA0;
        protected const byte VK_RSHIFT = 0xA1;
        protected const byte VK_LCONTROL = 0xA2;
        protected const byte VK_RCONTROL = 0x3;
        protected const byte VK_LALT = 0xA4;
        protected const byte VK_RALT = 0xA5;

        protected const byte LLKHF_ALTDOWN = 0x20;

        #endregion

        #region Private Variables

        protected int _hookType;
        protected int _handleToHook;
        protected bool _isStarted;
        protected HookProc _hookCallback;

        #endregion

        #region Properties

        public bool IsStarted
        {
            get
            {
                return _isStarted;
            }
        }

        #endregion

        #region Constructor

        public GlobalHook()
        {

            Application.ApplicationExit += new EventHandler(Application_ApplicationExit);

        }

        #endregion

        #region Methods

        public void Start()
        {

            if (!_isStarted &&
                _hookType != 0)
            {

                // Make sure we keep a reference to this delegate!
                // If not, GC randomly collects it, and a NullReference exception is thrown
                _hookCallback = new HookProc(HookCallbackProcedure);

                _handleToHook = SetWindowsHookEx(
                    _hookType,
                    _hookCallback,
                    Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().GetModules()[0]),
                    0);

                // Were we able to sucessfully start hook?
                if (_handleToHook != 0)
                {
                    _isStarted = true;
                }

            }

        }

        public void Stop()
        {

            if (_isStarted)
            {

                UnhookWindowsHookEx(_handleToHook);

                _isStarted = false;

            }

        }

        protected virtual int HookCallbackProcedure(int nCode, Int32 wParam, IntPtr lParam)
        {
           
            // This method must be overriden by each extending hook
            return 0;

        }

        protected void Application_ApplicationExit(object sender, EventArgs e)
        {

            if (_isStarted)
            {
                Stop();
            }

        }

        #endregion

    }

}

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About the Author

Brian Geiman
Software Developer GEA Refrigeration
United States United States
No Biography provided

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