-
Notifications
You must be signed in to change notification settings - Fork 30
/
KeyboardHook.cs
311 lines (293 loc) · 12.5 KB
/
KeyboardHook.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
using System;
using System.Runtime.InteropServices;
using System.Diagnostics;
namespace GlobalLowLevelHooks {
/// <summary>
/// Class for intercepting low level keyboard hooks
/// </summary>
public class KeyboardHook {
/// <summary>
/// Virtual Keys
/// </summary>
public enum VKeys {
// Losely based on http://www.pinvoke.net/default.aspx/Enums/VK.html
LBUTTON = 0x01, // Left mouse button
RBUTTON = 0x02, // Right mouse button
CANCEL = 0x03, // Control-break processing
MBUTTON = 0x04, // Middle mouse button (three-button mouse)
XBUTTON1 = 0x05, // Windows 2000/XP: X1 mouse button
XBUTTON2 = 0x06, // Windows 2000/XP: X2 mouse button
// 0x07 // Undefined
BACK = 0x08, // BACKSPACE key
TAB = 0x09, // TAB key
// 0x0A-0x0B, // Reserved
CLEAR = 0x0C, // CLEAR key
RETURN = 0x0D, // ENTER key
// 0x0E-0x0F, // Undefined
SHIFT = 0x10, // SHIFT key
CONTROL = 0x11, // CTRL key
MENU = 0x12, // ALT key
PAUSE = 0x13, // PAUSE key
CAPITAL = 0x14, // CAPS LOCK key
KANA = 0x15, // Input Method Editor (IME) Kana mode
HANGUL = 0x15, // IME Hangul mode
// 0x16, // Undefined
JUNJA = 0x17, // IME Junja mode
FINAL = 0x18, // IME final mode
HANJA = 0x19, // IME Hanja mode
KANJI = 0x19, // IME Kanji mode
// 0x1A, // Undefined
ESCAPE = 0x1B, // ESC key
CONVERT = 0x1C, // IME convert
NONCONVERT = 0x1D, // IME nonconvert
ACCEPT = 0x1E, // IME accept
MODECHANGE = 0x1F, // IME mode change request
SPACE = 0x20, // SPACEBAR
PRIOR = 0x21, // PAGE UP key
NEXT = 0x22, // PAGE DOWN key
END = 0x23, // END key
HOME = 0x24, // HOME key
LEFT = 0x25, // LEFT ARROW key
UP = 0x26, // UP ARROW key
RIGHT = 0x27, // RIGHT ARROW key
DOWN = 0x28, // DOWN ARROW key
SELECT = 0x29, // SELECT key
PRINT = 0x2A, // PRINT key
EXECUTE = 0x2B, // EXECUTE key
SNAPSHOT = 0x2C, // PRINT SCREEN key
INSERT = 0x2D, // INS key
DELETE = 0x2E, // DEL key
HELP = 0x2F, // HELP key
KEY_0 = 0x30, // 0 key
KEY_1 = 0x31, // 1 key
KEY_2 = 0x32, // 2 key
KEY_3 = 0x33, // 3 key
KEY_4 = 0x34, // 4 key
KEY_5 = 0x35, // 5 key
KEY_6 = 0x36, // 6 key
KEY_7 = 0x37, // 7 key
KEY_8 = 0x38, // 8 key
KEY_9 = 0x39, // 9 key
// 0x3A-0x40, // Undefined
KEY_A = 0x41, // A key
KEY_B = 0x42, // B key
KEY_C = 0x43, // C key
KEY_D = 0x44, // D key
KEY_E = 0x45, // E key
KEY_F = 0x46, // F key
KEY_G = 0x47, // G key
KEY_H = 0x48, // H key
KEY_I = 0x49, // I key
KEY_J = 0x4A, // J key
KEY_K = 0x4B, // K key
KEY_L = 0x4C, // L key
KEY_M = 0x4D, // M key
KEY_N = 0x4E, // N key
KEY_O = 0x4F, // O key
KEY_P = 0x50, // P key
KEY_Q = 0x51, // Q key
KEY_R = 0x52, // R key
KEY_S = 0x53, // S key
KEY_T = 0x54, // T key
KEY_U = 0x55, // U key
KEY_V = 0x56, // V key
KEY_W = 0x57, // W key
KEY_X = 0x58, // X key
KEY_Y = 0x59, // Y key
KEY_Z = 0x5A, // Z key
LWIN = 0x5B, // Left Windows key (Microsoft Natural keyboard)
RWIN = 0x5C, // Right Windows key (Natural keyboard)
APPS = 0x5D, // Applications key (Natural keyboard)
// 0x5E, // Reserved
SLEEP = 0x5F, // Computer Sleep key
NUMPAD0 = 0x60, // Numeric keypad 0 key
NUMPAD1 = 0x61, // Numeric keypad 1 key
NUMPAD2 = 0x62, // Numeric keypad 2 key
NUMPAD3 = 0x63, // Numeric keypad 3 key
NUMPAD4 = 0x64, // Numeric keypad 4 key
NUMPAD5 = 0x65, // Numeric keypad 5 key
NUMPAD6 = 0x66, // Numeric keypad 6 key
NUMPAD7 = 0x67, // Numeric keypad 7 key
NUMPAD8 = 0x68, // Numeric keypad 8 key
NUMPAD9 = 0x69, // Numeric keypad 9 key
MULTIPLY = 0x6A, // Multiply key
ADD = 0x6B, // Add key
SEPARATOR = 0x6C, // Separator key
SUBTRACT = 0x6D, // Subtract key
DECIMAL = 0x6E, // Decimal key
DIVIDE = 0x6F, // Divide key
F1 = 0x70, // F1 key
F2 = 0x71, // F2 key
F3 = 0x72, // F3 key
F4 = 0x73, // F4 key
F5 = 0x74, // F5 key
F6 = 0x75, // F6 key
F7 = 0x76, // F7 key
F8 = 0x77, // F8 key
F9 = 0x78, // F9 key
F10 = 0x79, // F10 key
F11 = 0x7A, // F11 key
F12 = 0x7B, // F12 key
F13 = 0x7C, // F13 key
F14 = 0x7D, // F14 key
F15 = 0x7E, // F15 key
F16 = 0x7F, // F16 key
F17 = 0x80, // F17 key
F18 = 0x81, // F18 key
F19 = 0x82, // F19 key
F20 = 0x83, // F20 key
F21 = 0x84, // F21 key
F22 = 0x85, // F22 key, (PPC only) Key used to lock device.
F23 = 0x86, // F23 key
F24 = 0x87, // F24 key
// 0x88-0X8F, // Unassigned
NUMLOCK = 0x90, // NUM LOCK key
SCROLL = 0x91, // SCROLL LOCK key
// 0x92-0x96, // OEM specific
// 0x97-0x9F, // Unassigned
LSHIFT = 0xA0, // Left SHIFT key
RSHIFT = 0xA1, // Right SHIFT key
LCONTROL = 0xA2, // Left CONTROL key
RCONTROL = 0xA3, // Right CONTROL key
LMENU = 0xA4, // Left MENU key
RMENU = 0xA5, // Right MENU key
BROWSER_BACK = 0xA6, // Windows 2000/XP: Browser Back key
BROWSER_FORWARD = 0xA7, // Windows 2000/XP: Browser Forward key
BROWSER_REFRESH = 0xA8, // Windows 2000/XP: Browser Refresh key
BROWSER_STOP = 0xA9, // Windows 2000/XP: Browser Stop key
BROWSER_SEARCH = 0xAA, // Windows 2000/XP: Browser Search key
BROWSER_FAVORITES = 0xAB, // Windows 2000/XP: Browser Favorites key
BROWSER_HOME = 0xAC, // Windows 2000/XP: Browser Start and Home key
VOLUME_MUTE = 0xAD, // Windows 2000/XP: Volume Mute key
VOLUME_DOWN = 0xAE, // Windows 2000/XP: Volume Down key
VOLUME_UP = 0xAF, // Windows 2000/XP: Volume Up key
MEDIA_NEXT_TRACK = 0xB0,// Windows 2000/XP: Next Track key
MEDIA_PREV_TRACK = 0xB1,// Windows 2000/XP: Previous Track key
MEDIA_STOP = 0xB2, // Windows 2000/XP: Stop Media key
MEDIA_PLAY_PAUSE = 0xB3,// Windows 2000/XP: Play/Pause Media key
LAUNCH_MAIL = 0xB4, // Windows 2000/XP: Start Mail key
LAUNCH_MEDIA_SELECT = 0xB5, // Windows 2000/XP: Select Media key
LAUNCH_APP1 = 0xB6, // Windows 2000/XP: Start Application 1 key
LAUNCH_APP2 = 0xB7, // Windows 2000/XP: Start Application 2 key
// 0xB8-0xB9, // Reserved
OEM_1 = 0xBA, // Used for miscellaneous characters; it can vary by keyboard.
// Windows 2000/XP: For the US standard keyboard, the ';:' key
OEM_PLUS = 0xBB, // Windows 2000/XP: For any country/region, the '+' key
OEM_COMMA = 0xBC, // Windows 2000/XP: For any country/region, the ',' key
OEM_MINUS = 0xBD, // Windows 2000/XP: For any country/region, the '-' key
OEM_PERIOD = 0xBE, // Windows 2000/XP: For any country/region, the '.' key
OEM_2 = 0xBF, // Used for miscellaneous characters; it can vary by keyboard.
// Windows 2000/XP: For the US standard keyboard, the '/?' key
OEM_3 = 0xC0, // Used for miscellaneous characters; it can vary by keyboard.
// Windows 2000/XP: For the US standard keyboard, the '`~' key
// 0xC1-0xD7, // Reserved
// 0xD8-0xDA, // Unassigned
OEM_4 = 0xDB, // Used for miscellaneous characters; it can vary by keyboard.
// Windows 2000/XP: For the US standard keyboard, the '[{' key
OEM_5 = 0xDC, // Used for miscellaneous characters; it can vary by keyboard.
// Windows 2000/XP: For the US standard keyboard, the '\|' key
OEM_6 = 0xDD, // Used for miscellaneous characters; it can vary by keyboard.
// Windows 2000/XP: For the US standard keyboard, the ']}' key
OEM_7 = 0xDE, // Used for miscellaneous characters; it can vary by keyboard.
// Windows 2000/XP: For the US standard keyboard, the 'single-quote/double-quote' key
OEM_8 = 0xDF, // Used for miscellaneous characters; it can vary by keyboard.
// 0xE0, // Reserved
// 0xE1, // OEM specific
OEM_102 = 0xE2, // Windows 2000/XP: Either the angle bracket key or the backslash key on the RT 102-key keyboard
// 0xE3-E4, // OEM specific
PROCESSKEY = 0xE5, // Windows 95/98/Me, Windows NT 4.0, Windows 2000/XP: IME PROCESS key
// 0xE6, // OEM specific
PACKET = 0xE7, // Windows 2000/XP: Used to pass Unicode characters as if they were keystrokes. The VK_PACKET key is the low word of a 32-bit Virtual Key value used for non-keyboard input methods. For more information, see Remark in KEYBDINPUT, SendInput, WM_KEYDOWN, and WM_KEYUP
// 0xE8, // Unassigned
// 0xE9-F5, // OEM specific
ATTN = 0xF6, // Attn key
CRSEL = 0xF7, // CrSel key
EXSEL = 0xF8, // ExSel key
EREOF = 0xF9, // Erase EOF key
PLAY = 0xFA, // Play key
ZOOM = 0xFB, // Zoom key
NONAME = 0xFC, // Reserved
PA1 = 0xFD, // PA1 key
OEM_CLEAR = 0xFE // Clear key
}
/// <summary>
/// Internal callback processing function
/// </summary>
private delegate IntPtr KeyboardHookHandler(int nCode, IntPtr wParam, IntPtr lParam);
private KeyboardHookHandler hookHandler;
/// <summary>
/// Function that will be called when defined events occur
/// </summary>
/// <param name="key">VKeys</param>
public delegate void KeyboardHookCallback(VKeys key);
#region Events
public event KeyboardHookCallback KeyDown;
public event KeyboardHookCallback KeyUp;
#endregion
/// <summary>
/// Hook ID
/// </summary>
private IntPtr hookID = IntPtr.Zero;
/// <summary>
/// Install low level keyboard hook
/// </summary>
public void Install() {
hookHandler = HookFunc;
hookID = SetHook(hookHandler);
}
/// <summary>
/// Remove low level keyboard hook
/// </summary>
public void Uninstall() {
UnhookWindowsHookEx(hookID);
}
/// <summary>
/// Registers hook with Windows API
/// </summary>
/// <param name="proc">Callback function</param>
/// <returns>Hook ID</returns>
private IntPtr SetHook(KeyboardHookHandler proc) {
using (ProcessModule module = Process.GetCurrentProcess().MainModule)
return SetWindowsHookEx(13, proc, GetModuleHandle(module.ModuleName), 0);
}
/// <summary>
/// Default hook call, which analyses pressed keys
/// </summary>
private IntPtr HookFunc(int nCode, IntPtr wParam, IntPtr lParam) {
if (nCode >= 0) {
int iwParam = wParam.ToInt32();
if ((iwParam == WM_KEYDOWN || iwParam == WM_SYSKEYDOWN))
if (KeyDown != null)
KeyDown((VKeys)Marshal.ReadInt32(lParam));
if ((iwParam == WM_KEYUP || iwParam == WM_SYSKEYUP))
if (KeyUp != null)
KeyUp((VKeys)Marshal.ReadInt32(lParam));
}
return CallNextHookEx(hookID, nCode, wParam, lParam);
}
/// <summary>
/// Destructor. Unhook current hook
/// </summary>
~KeyboardHook() {
Uninstall();
}
/// <summary>
/// Low-Level function declarations
/// </summary>
#region WinAPI
private const int WM_KEYDOWN = 0x100;
private const int WM_SYSKEYDOWN = 0x104;
private const int WM_KEYUP = 0x101;
private const int WM_SYSKEYUP = 0x105;
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr SetWindowsHookEx(int idHook, KeyboardHookHandler lpfn, IntPtr hMod, uint dwThreadId);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool UnhookWindowsHookEx(IntPtr hhk);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, IntPtr lParam);
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr GetModuleHandle(string lpModuleName);
#endregion
}
}