鼠标和键盘操作的全局钩子(较好).doc

using System;using System.ComponentModel;using System.Reflection;using System.Runtime.InteropServices;using System.Windows.Forms;namespace UserActivityMonitor / / This class monitors all mouse activities globally (also outside of the application) / and provides appropriate events. / public static class HookManager / / Occurs when the mouse pointer is moved. / public static event MouseEventHandler MouseMove add EnsureSubscribedToGlobalMouseEvents(); s_MouseMove += value; remove s_MouseMove -= value; TryUnsubscribeFromGlobalMouseEvents(); / / Occurs when a click was performed by the mouse. / public static event MouseEventHandler MouseClick add EnsureSubscribedToGlobalMouseEvents(); s_MouseClick += value; remove s_MouseClick -= value; TryUnsubscribeFromGlobalMouseEvents(); / / Occurs when the mouse a mouse button is pressed. / public static event MouseEventHandler MouseDown add EnsureSubscribedToGlobalMouseEvents(); s_MouseDown += value; remove s_MouseDown -= value; TryUnsubscribeFromGlobalMouseEvents(); / / Occurs when a mouse button is released. / public static event MouseEventHandler MouseUp add EnsureSubscribedToGlobalMouseEvents(); s_MouseUp += value; remove s_MouseUp -= value; TryUnsubscribeFromGlobalMouseEvents(); / / Occurs when the mouse wheel moves. / public static event MouseEventHandler MouseWheel add EnsureSubscribedToGlobalMouseEvents(); s_MouseWheel += value; remove s_MouseWheel -= value; TryUnsubscribeFromGlobalMouseEvents(); / / Occurs when a double clicked was performed by the mouse. / public static event MouseEventHandler MouseDoubleClick add EnsureSubscribedToGlobalMouseEvents(); if (s_MouseDoubleClick = null) s_DoubleClickTimer = new Timer Interval = GetDoubleClickTime(), Enabled = false ; s_DoubleClickTimer.Tick += DoubleClickTimeElapsed; MouseUp += OnMouseUp; s_MouseDoubleClick += value; remove if (s_MouseDoubleClick != null) s_MouseDoubleClick -= value; if (s_MouseDoubleClick = null) MouseUp -= OnMouseUp; s_DoubleClickTimer.Tick -= DoubleClickTimeElapsed; s_DoubleClickTimer = null; TryUnsubscribeFromGlobalMouseEvents(); / / Occurs when a key is released. / public static event KeyEventHandler KeyUp add EnsureSubscribedToGlobalKeyboardEvents(); s_KeyUp += value; remove s_KeyUp -= value; TryUnsubscribeFromGlobalKeyboardEvents(); / / Occurs when a key is preseed. / public static event KeyEventHandler KeyDown add EnsureSubscribedToGlobalKeyboardEvents(); s_KeyDown += value; remove s_KeyDown -= value; TryUnsubscribeFromGlobalKeyboardEvents(); / / Occurs when a key is pressed. / / / Key events occur in the following order: / / KeyDown / KeyPress / KeyUp / /The KeyPress event is not raised by noncharacter keys; however, the noncharacter keys do raise the KeyDown and KeyUp events. /Use the KeyChar property to sample keystrokes at run time and to consume or modify a subset of common keystrokes. /To handle keyboard events only in your application and not enable other applications to receive keyboard events, / set the KeyPressEventArgs.Handled property in your forms KeyPress event-handling method to true. / public static event KeyPressEventHandler KeyPress add EnsureSubscribedToGlobalKeyboardEvents(); s_KeyPress += value; remove s_KeyPress -= value; TryUnsubscribeFromGlobalKeyboardEvents(); private static event MouseEventHandler s_MouseMove; private static event MouseEventHandler s_MouseClick; private static event MouseEventHandler s_MouseDown; private static event MouseEventHandler s_MouseUp; private static event MouseEventHandler s_MouseWheel; private static event MouseEventHandler s_MouseDoubleClick; private static MouseButtons s_PrevClickedButton; private static Timer s_DoubleClickTimer; private static void DoubleClickTimeElapsed(object sender, EventArgs e) s_DoubleClickTimer.Enabled = false; s_PrevClickedButton = MouseButtons.None; private static void OnMouseUp(object sender, MouseEventArgs e) if (e.Clicks = 0) var mouseHookStruct = (MouseLLHookStruct)Marshal.PtrToStructure(lParam, typeof(MouseLLHookStruct); var button = MouseButtons.None; short mouseDelta = 0; var clickCount = 0; var mouseDown = false; var mouseUp = false; switch (wParam) case WM_LBUTTONDOWN: mouseDown = true; button = MouseButtons.Left; clickCount = 1; break; case WM_LBUTTONUP: mouseUp = true; button = MouseButtons.Left; clickCount = 1; break; case WM_LBUTTONDBLCLK: button = MouseButtons.Left; clickCount = 2; break; case WM_RBUTTONDOWN: mouseDown = true; button = MouseButtons.Right; clickCount = 1; break; case WM_RBUTTONUP: mouseUp = true; button = MouseButtons.Right; clickCount = 1; break; case WM_RBUTTONDBLCLK: button = MouseButtons.Right; clickCount = 2; break; case WM_MOUSEWHEEL: mouseDelta = (short)(mouseHookStruct.MouseData 16) & 0xffff); break; var e = new MouseEventExtArgs( button, clickCount, mouseHookStruct.Point.X, mouseHookStruct.Point.Y, mouseDelta); if (s_MouseUp != null & mouseUp) s_MouseUp.Invoke(null, e); if (s_MouseDown != null & mouseDown) s_MouseDown.Invoke(null, e); if (s_MouseClick != null & clickCount 0) s_MouseClick.Invoke(null, e); if (s_MouseDoubleClick != null & clickCount = 2) s_MouseDoubleClick.Invoke(null, e); if (s_MouseWheel != null & mouseDelta != 0) s_MouseWheel.Invoke(null, e); if (s_MouseMove != null) & (m_OldX != mouseHookStruct.Point.X | m_OldY != mouseHookStruct.Point.Y) m_OldX = mouseHookStruct.Point.X; m_OldY = mouseHookStruct.Point.Y; if (s_MouseMove != null) s_MouseMove.Invoke(null, e); if (e.Handled) return -1; return CallNextHookEx(s_MouseHookHandle, nCode, wParam, lParam); private static void EnsureSubscribedToGlobalMouseEvents() if (s_MouseHookHandle != 0) return; s_MouseDelegate = MouseHookProc; s_MouseHookHandle = SetWindowsHookEx( WH_MOUSE_LL, s_MouseDelegate, Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().GetModules()0), 0); if (s_MouseHookHandle != 0) return; throw new Win32Exception(Marshal.GetLastWin32Error(); private static void TryUnsubscribeFromGlobalMouseEvents() if (s_MouseClick = null & s_MouseDown = null & s_MouseMove = null & s_MouseUp = null & s_MouseWheel = null) ForceUnsunscribeFromGlobalMouseEvents(); private static void ForceUnsunscribeFromGlobalMouseEvents() if (s_MouseHookHandle = 0) return; var result = UnhookWindowsHookEx(s_MouseHookHandle); s_MouseHookHandle = 0; s_MouseDelegate = null; if (result != 0) return; throw new Win32Exception(Marshal.GetLastWin32Error(); private static HookProc s_KeyboardDelegate; private static int s_KeyboardHookHandle; private static int KeyboardHookProc(int nCode, Int32 wParam, IntPtr lParam) var handled = false; if (nCode = 0) var MyKeyboardHookStruct = (KeyboardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyboardHookStruct); if (s_KeyDown != null & (wParam = WM_KEYDOWN | wParam = WM_SYSKEYDOWN) var keyData = (Keys)MyKeyboardHookStruct.VirtualKeyCode; var e = new KeyEventArgs(keyData); s_KeyDown.Invoke(null, e); handled = e.Handled; if (s_KeyPress != null & wParam = WM_KEYDOWN) var isDownShift = (GetKeyState(VK_SHIFT) & 0x80) = 0x80); var isDownCapslock = (GetKeyState(VK_CAPITAL) != 0); var keyState = new byte256; GetKeyboardState(keyState); var inBuffer = new byte2; if (ToAscii(MyKeyboardHookStruct.VirtualKeyCode, MyKeyboardHookStruct.ScanCode, keyState, inBuffer, MyKeyboardHookStruct.Flags) = 1) var key = (char)inBuffer0; if (isDownCapslock isDownShift) & Char.IsLetter(key) key = Char.ToUpper(key); var e = new KeyPressEventArgs(key); s_KeyPress.Invoke(null, e); handled = handled | e.Handled; if (s_KeyUp != null & (wParam = WM_KEYUP | wParam = WM_SYSKEYUP) var keyData = (Keys)MyKeyboardHookStruct.VirtualKeyCode; var e = new KeyEventArgs(keyData); s_KeyUp.Invoke(null, e); handled = handled | e.Handled; if (handled) return -1; return CallNextHookEx(s_KeyboardHookHandle, nCode, wParam, lParam); private static void EnsureSubscribedToGlobalKeyboardEvents() if (s_KeyboardHo