코딩/C#
[C#] Global Keyboard Hooking
버딩
2017. 3. 23. 18:40
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class globalKeyboardHook { #region Constant, Structure and Delegate Definitions ///선언/// defines the callback type for the hook /// public delegate int keyboardHookProc(int code, int wParam, ref keyboardHookStruct lParam); private static keyboardHookProc callbackDelegate; public struct keyboardHookStruct { public int vkCode; public int scanCode; public int flags; public int time; public int dwExtraInfo; } const int WH_KEYBOARD_LL = 13; const int WM_KEYDOWN = 0x100; const int WM_KEYUP = 0x101; const int WM_SYSKEYDOWN = 0x104; const int WM_SYSKEYUP = 0x105; #endregion #region Instance Variables ////// The collections of keys to watch for /// public ListHookedKeys = new List (); /// /// Handle to the hook, need this to unhook and call the next hook /// IntPtr hhook = IntPtr.Zero; #endregion #region Events ////// Occurs when one of the hooked keys is pressed /// public event KeyEventHandler KeyDown; ////// Occurs when one of the hooked keys is released /// public event KeyEventHandler KeyUp; #endregion #region Constructors and Destructors ////// Initializes a new instance of the public globalKeyboardHook() { hook(); } ///class and installs the keyboard hook. /// /// Releases unmanaged resources and performs other cleanup operations before the /// ~globalKeyboardHook() { unhook(); } #endregion #region Public Methods ///is reclaimed by garbage collection and uninstalls the keyboard hook. /// /// Installs the global hook /// public void hook() { if (callbackDelegate != null) throw new InvalidOperationException("Can't hook more than once"); IntPtr hInstance = LoadLibrary("User32"); callbackDelegate = new keyboardHookProc(hookProc); hhook = SetWindowsHookEx(WH_KEYBOARD_LL, callbackDelegate, hInstance, 0); if (hhook == IntPtr.Zero) throw new Win32Exception(); } ////// Uninstalls the global hook /// public void unhook() { if (callbackDelegate == null) return; bool ok = UnhookWindowsHookEx(hhook); if (!ok) throw new Win32Exception(); callbackDelegate = null; //UnhookWindowsHookEx(hhook); } ////// The callback for the keyboard hook /// /// The hook code, if it isn't >= 0, the function shouldn't do anyting /// The event type /// The keyhook event information ///public int hookProc(int code, int wParam, ref keyboardHookStruct lParam) { if (code >= 0) { Keys key = (Keys)lParam.vkCode; if (HookedKeys.Contains(key)) { KeyEventArgs kea = new KeyEventArgs(key); if ((wParam == WM_KEYDOWN || wParam == WM_SYSKEYDOWN) && (KeyDown != null)) { KeyDown(this, kea); } else if ((wParam == WM_KEYUP || wParam == WM_SYSKEYUP) && (KeyUp != null)) { KeyUp(this, kea); } if (kea.Handled) return 1; } } return CallNextHookEx(hhook, code, wParam, ref lParam); } #endregion #region DLL imports /// /// Sets the windows hook, do the desired event, one of hInstance or threadId must be non-null /// /// The id of the event you want to hook /// The callback. /// The handle you want to attach the event to, can be null /// The thread you want to attach the event to, can be null ///a handle to the desired hook [DllImport("user32.dll")] static extern IntPtr SetWindowsHookEx(int idHook, keyboardHookProc callback, IntPtr hInstance, uint threadId); ////// Unhooks the windows hook. /// /// The hook handle that was returned from SetWindowsHookEx ///True if successful, false otherwise [DllImport("user32.dll")] static extern bool UnhookWindowsHookEx(IntPtr hInstance); ////// Calls the next hook. /// /// The hook id /// The hook code /// The wparam. /// The lparam. ///[DllImport("user32.dll")] static extern int CallNextHookEx(IntPtr idHook, int nCode, int wParam, ref keyboardHookStruct lParam); /// /// Loads the library. /// /// Name of the library ///A handle to the library [DllImport("kernel32.dll")] static extern IntPtr LoadLibrary(string lpFileName); #endregion } //
globalKeyboardHook gkh = new globalKeyboardHook(); void gkh_KeyUp(object sender, KeyEventArgs e) { e.Handled = true; } void gkh_KeyDown(object sender, KeyEventArgs e) { e.Handled = true; } //폼로드에 이벤트 선언 gkh.HookedKeys.Add(Keys.Down); gkh.HookedKeys.Add(Keys.Up); gkh.KeyDown += new KeyEventHandler(gkh_KeyDown); gkh.KeyUp +=new KeyEventHandler(gkh_KeyUp);메인
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