C# monitor keyboard and print pressed key
2021-01-17 18:14
标签：snap nta callback RoCE esc extern fresh methods line referenced https://stackoverflow.com/questions/604410/global-keyboard-capture-in-c-sharp-application C# monitor keyboard and print pressed key 标签：snap nta callback RoCE esc extern fresh methods line 原文地址：https://www.cnblogs.com/Fred1987/p/12195754.htmlusing System;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Diagnostics;
namespace ConsoleApplication3
{
class MonitorHelper
{
internal const int WHKEYBOARDLLValue = 13;
internal const int WMKEYDOWNValue = 0x0100;
internal static LowLevelKeyboardProc procValue = HookCallback;
internal static IntPtr hookIDValue = IntPtr.Zero;
internal delegate IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
internal static extern IntPtr SetWindowsHookEx(int idHook, LowLevelKeyboardProc lpfn, IntPtr hMod, uint dwThreadId);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
internal static extern bool UnhookWindowsHookEx(IntPtr hhk);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
internal static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, IntPtr lParam);
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
internal static extern IntPtr GetModuleHandle(string lpModuleName);
internal static IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode >= 0 && wParam == (IntPtr)WMKEYDOWNValue)
{
int vkCode = Marshal.ReadInt32(lParam);
Console.WriteLine((Keys)vkCode);
}
return CallNextHookEx(hookIDValue, nCode, wParam, lParam);
}
internal static IntPtr SetHook(LowLevelKeyboardProc proc)
{
using (Process curProcess = Process.GetCurrentProcess())
using (ProcessModule curModule = curProcess.MainModule)
{
return SetWindowsHookEx(WHKEYBOARDLLValue, proc,
GetModuleHandle(curModule.ModuleName), 0);
}
}
}
}
using System.Windows.Forms;
static void Main(string[] args)
{
MonitorDemo();
Console.ReadLine();
}
static void MonitorDemo()
{
MonitorHelper.hookIDValue = MonitorHelper.SetHook(MonitorHelper.procValue);
Application.Run();
MonitorHelper.UnhookWindowsHookEx(MonitorHelper.hookIDValue);
}
#region Assembly System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
// C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.7.2\System.Windows.Forms.dll
#endregion
using System.ComponentModel;
using System.Runtime.InteropServices;
namespace System.Windows.Forms
{
//
// Summary:
// Specifies key codes and modifiers.
[ComVisible(true)]
[Editor("System.Windows.Forms.Design.ShortcutKeysEditor, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(Drawing.Design.UITypeEditor))]
[Flags]
[TypeConverter(typeof(KeysConverter))]
public enum Keys
{
//
// Summary:
// The bitmask to extract modifiers from a key value.
Modifiers = -65536,
//
// Summary:
// No key pressed.
None = 0,
//
// Summary:
// The left mouse button.
LButton = 1,
//
// Summary:
// The right mouse button.
RButton = 2,
//
// Summary:
// The CANCEL key.
Cancel = 3,
//
// Summary:
// The middle mouse button (three-button mouse).
MButton = 4,
//
// Summary:
// The first x mouse button (five-button mouse).
XButton1 = 5,
//
// Summary:
// The second x mouse button (five-button mouse).
XButton2 = 6,
//
// Summary:
// The BACKSPACE key.
Back = 8,
//
// Summary:
// The TAB key.
Tab = 9,
//
// Summary:
// The LINEFEED key.
LineFeed = 10,
//
// Summary:
// The CLEAR key.
Clear = 12,
//
// Summary:
// The RETURN key.
Return = 13,
//
// Summary:
// The ENTER key.
Enter = 13,
//
// Summary:
// The SHIFT key.
ShiftKey = 16,
//
// Summary:
// The CTRL key.
ControlKey = 17,
//
// Summary:
// The ALT key.
Menu = 18,
//
// Summary:
// The PAUSE key.
Pause = 19,
//
// Summary:
// The CAPS LOCK key.
Capital = 20,
//
// Summary:
// The CAPS LOCK key.
CapsLock = 20,
//
// Summary:
// The IME Kana mode key.
KanaMode = 21,
//
// Summary:
// The IME Hanguel mode key. (maintained for compatibility; use HangulMode)
HanguelMode = 21,
//
// Summary:
// The IME Hangul mode key.
HangulMode = 21,
//
// Summary:
// The IME Junja mode key.
JunjaMode = 23,
//
// Summary:
// The IME final mode key.
FinalMode = 24,
//
// Summary:
// The IME Hanja mode key.
HanjaMode = 25,
//
// Summary:
// The IME Kanji mode key.
KanjiMode = 25,
//
// Summary:
// The ESC key.
Escape = 27,
//
// Summary:
// The IME convert key.
IMEConvert = 28,
//
// Summary:
// The IME nonconvert key.
IMENonconvert = 29,
//
// Summary:
// The IME accept key, replaces System.Windows.Forms.Keys.IMEAceept.
IMEAccept = 30,
//
// Summary:
// The IME accept key. Obsolete, use System.Windows.Forms.Keys.IMEAccept instead.
IMEAceept = 30,
//
// Summary:
// The IME mode change key.
IMEModeChange = 31,
//
// Summary:
// The SPACEBAR key.
Space = 32,
//
// Summary:
// The PAGE UP key.
Prior = 33,
//
// Summary:
// The PAGE UP key.
PageUp = 33,
//
// Summary:
// The PAGE DOWN key.
Next = 34,
//
// Summary:
// The PAGE DOWN key.
PageDown = 34,
//
// Summary:
// The END key.
End = 35,
//
// Summary:
// The HOME key.
Home = 36,
//
// Summary:
// The LEFT ARROW key.
Left = 37,
//
// Summary:
// The UP ARROW key.
Up = 38,
//
// Summary:
// The RIGHT ARROW key.
Right = 39,
//
// Summary:
// The DOWN ARROW key.
Down = 40,
//
// Summary:
// The SELECT key.
Select = 41,
//
// Summary:
// The PRINT key.
Print = 42,
//
// Summary:
// The EXECUTE key.
Execute = 43,
//
// Summary:
// The PRINT SCREEN key.
Snapshot = 44,
//
// Summary:
// The PRINT SCREEN key.
PrintScreen = 44,
//
// Summary:
// The INS key.
Insert = 45,
//
// Summary:
// The DEL key.
Delete = 46,
//
// Summary:
// The HELP key.
Help = 47,
//
// Summary:
// The 0 key.
D0 = 48,
//
// Summary:
// The 1 key.
D1 = 49,
//
// Summary:
// The 2 key.
D2 = 50,
//
// Summary:
// The 3 key.
D3 = 51,
//
// Summary:
// The 4 key.
D4 = 52,
//
// Summary:
// The 5 key.
D5 = 53,
//
// Summary:
// The 6 key.
D6 = 54,
//
// Summary:
// The 7 key.
D7 = 55,
//
// Summary:
// The 8 key.
D8 = 56,
//
// Summary:
// The 9 key.
D9 = 57,
//
// Summary:
// The A key.
A = 65,
//
// Summary:
// The B key.
B = 66,
//
// Summary:
// The C key.
C = 67,
//
// Summary:
// The D key.
D = 68,
//
// Summary:
// The E key.
E = 69,
//
// Summary:
// The F key.
F = 70,
//
// Summary:
// The G key.
G = 71,
//
// Summary:
// The H key.
H = 72,
//
// Summary:
// The I key.
I = 73,
//
// Summary:
// The J key.
J = 74,
//
// Summary:
// The K key.
K = 75,
//
// Summary:
// The L key.
L = 76,
//
// Summary:
// The M key.
M = 77,
//
// Summary:
// The N key.
N = 78,
//
// Summary:
// The O key.
O = 79,
//
// Summary:
// The P key.
P = 80,
//
// Summary:
// The Q key.
Q = 81,
//
// Summary:
// The R key.
R = 82,
//
// Summary:
// The S key.
S = 83,
//
// Summary:
// The T key.
T = 84,
//
// Summary:
// The U key.
U = 85,
//
// Summary:
// The V key.
V = 86,
//
// Summary:
// The W key.
W = 87,
//
// Summary:
// The X key.
X = 88,
//
// Summary:
// The Y key.
Y = 89,
//
// Summary:
// The Z key.
Z = 90,
//
// Summary:
// The left Windows logo key (Microsoft Natural Keyboard).
LWin = 91,
//
// Summary:
// The right Windows logo key (Microsoft Natural Keyboard).
RWin = 92,
//
// Summary:
// The application key (Microsoft Natural Keyboard).
Apps = 93,
//
// Summary:
// The computer sleep key.
Sleep = 95,
//
// Summary:
// The 0 key on the numeric keypad.
NumPad0 = 96,
//
// Summary:
// The 1 key on the numeric keypad.
NumPad1 = 97,
//
// Summary:
// The 2 key on the numeric keypad.
NumPad2 = 98,
//
// Summary:
// The 3 key on the numeric keypad.
NumPad3 = 99,
//
// Summary:
// The 4 key on the numeric keypad.
NumPad4 = 100,
//
// Summary:
// The 5 key on the numeric keypad.
NumPad5 = 101,
//
// Summary:
// The 6 key on the numeric keypad.
NumPad6 = 102,
//
// Summary:
// The 7 key on the numeric keypad.
NumPad7 = 103,
//
// Summary:
// The 8 key on the numeric keypad.
NumPad8 = 104,
//
// Summary:
// The 9 key on the numeric keypad.
NumPad9 = 105,
//
// Summary:
// The multiply key.
Multiply = 106,
//
// Summary:
// The add key.
Add = 107,
//
// Summary:
// The separator key.
Separator = 108,
//
// Summary:
// The subtract key.
Subtract = 109,
//
// Summary:
// The decimal key.
Decimal = 110,
//
// Summary:
// The divide key.
Divide = 111,
//
// Summary:
// The F1 key.
F1 = 112,
//
// Summary:
// The F2 key.
F2 = 113,
//
// Summary:
// The F3 key.
F3 = 114,
//
// Summary:
// The F4 key.
F4 = 115,
//
// Summary:
// The F5 key.
F5 = 116,
//
// Summary:
// The F6 key.
F6 = 117,
//
// Summary:
// The F7 key.
F7 = 118,
//
// Summary:
// The F8 key.
F8 = 119,
//
// Summary:
// The F9 key.
F9 = 120,
//
// Summary:
// The F10 key.
F10 = 121,
//
// Summary:
// The F11 key.
F11 = 122,
//
// Summary:
// The F12 key.
F12 = 123,
//
// Summary:
// The F13 key.
F13 = 124,
//
// Summary:
// The F14 key.
F14 = 125,
//
// Summary:
// The F15 key.
F15 = 126,
//
// Summary:
// The F16 key.
F16 = 127,
//
// Summary:
// The F17 key.
F17 = 128,
//
// Summary:
// The F18 key.
F18 = 129,
//
// Summary:
// The F19 key.
F19 = 130,
//
// Summary:
// The F20 key.
F20 = 131,
//
// Summary:
// The F21 key.
F21 = 132,
//
// Summary:
// The F22 key.
F22 = 133,
//
// Summary:
// The F23 key.
F23 = 134,
//
// Summary:
// The F24 key.
F24 = 135,
//
// Summary:
// The NUM LOCK key.
NumLock = 144,
//
// Summary:
// The SCROLL LOCK key.
Scroll = 145,
//
// Summary:
// The left SHIFT key.
LShiftKey = 160,
//
// Summary:
// The right SHIFT key.
RShiftKey = 161,
//
// Summary:
// The left CTRL key.
LControlKey = 162,
//
// Summary:
// The right CTRL key.
RControlKey = 163,
//
// Summary:
// The left ALT key.
LMenu = 164,
//
// Summary:
// The right ALT key.
RMenu = 165,
//
// Summary:
// The browser back key (Windows 2000 or later).
BrowserBack = 166,
//
// Summary:
// The browser forward key (Windows 2000 or later).
BrowserForward = 167,
//
// Summary:
// The browser refresh key (Windows 2000 or later).
BrowserRefresh = 168,
//
// Summary:
// The browser stop key (Windows 2000 or later).
BrowserStop = 169,
//
// Summary:
// The browser search key (Windows 2000 or later).
BrowserSearch = 170,
//
// Summary:
// The browser favorites key (Windows 2000 or later).
BrowserFavorites = 171,
//
// Summary:
// The browser home key (Windows 2000 or later).
BrowserHome = 172,
//
// Summary:
// The volume mute key (Windows 2000 or later).
VolumeMute = 173,
//
// Summary:
// The volume down key (Windows 2000 or later).
VolumeDown = 174,
//
// Summary:
// The volume up key (Windows 2000 or later).
VolumeUp = 175,
//
// Summary:
// The media next track key (Windows 2000 or later).
MediaNextTrack = 176,
//
// Summary:
// The media previous track key (Windows 2000 or later).
MediaPreviousTrack = 177,
//
// Summary:
// The media Stop key (Windows 2000 or later).
MediaStop = 178,
//
// Summary:
// The media play pause key (Windows 2000 or later).
MediaPlayPause = 179,
//
// Summary:
// The launch mail key (Windows 2000 or later).
LaunchMail = 180,
//
// Summary:
// The select media key (Windows 2000 or later).
SelectMedia = 181,
//
// Summary:
// The start application one key (Windows 2000 or later).
LaunchApplication1 = 182,
//
// Summary:
// The start application two key (Windows 2000 or later).
LaunchApplication2 = 183,
//
// Summary:
// The OEM Semicolon key on a US standard keyboard (Windows 2000 or later).
OemSemicolon = 186,
//
// Summary:
// The OEM 1 key.
Oem1 = 186,
//
// Summary:
// The OEM plus key on any country/region keyboard (Windows 2000 or later).
Oemplus = 187,
//
// Summary:
// The OEM comma key on any country/region keyboard (Windows 2000 or later).
Oemcomma = 188,
//
// Summary:
// The OEM minus key on any country/region keyboard (Windows 2000 or later).
OemMinus = 189,
//
// Summary:
// The OEM period key on any country/region keyboard (Windows 2000 or later).
OemPeriod = 190,
//
// Summary:
// The OEM question mark key on a US standard keyboard (Windows 2000 or later).
OemQuestion = 191,
//
// Summary:
// The OEM 2 key.
Oem2 = 191,
//
// Summary:
// The OEM tilde key on a US standard keyboard (Windows 2000 or later).
Oemtilde = 192,
//
// Summary:
// The OEM 3 key.
Oem3 = 192,
//
// Summary:
// The OEM open bracket key on a US standard keyboard (Windows 2000 or later).
OemOpenBrackets = 219,
//
// Summary:
// The OEM 4 key.
Oem4 = 219,
//
// Summary:
// The OEM pipe key on a US standard keyboard (Windows 2000 or later).
OemPipe = 220,
//
// Summary:
// The OEM 5 key.
Oem5 = 220,
//
// Summary:
// The OEM close bracket key on a US standard keyboard (Windows 2000 or later).
OemCloseBrackets = 221,
//
// Summary:
// The OEM 6 key.
Oem6 = 221,
//
// Summary:
// The OEM singled/double quote key on a US standard keyboard (Windows 2000 or later).
OemQuotes = 222,
//
// Summary:
// The OEM 7 key.
Oem7 = 222,
//
// Summary:
// The OEM 8 key.
Oem8 = 223,
//
// Summary:
// The OEM angle bracket or backslash key on the RT 102 key keyboard (Windows 2000
// or later).
OemBackslash = 226,
//
// Summary:
// The OEM 102 key.
Oem102 = 226,
//
// Summary:
// The PROCESS KEY key.
ProcessKey = 229,
//
// Summary:
// Used to pass Unicode characters as if they were keystrokes. The Packet key value
// is the low word of a 32-bit virtual-key value used for non-keyboard input methods.
Packet = 231,
//
// Summary:
// The ATTN key.
Attn = 246,
//
// Summary:
// The CRSEL key.
Crsel = 247,
//
// Summary:
// The EXSEL key.
Exsel = 248,
//
// Summary:
// The ERASE EOF key.
EraseEof = 249,
//
// Summary:
// The PLAY key.
Play = 250,
//
// Summary:
// The ZOOM key.
Zoom = 251,
//
// Summary:
// A constant reserved for future use.
NoName = 252,
//
// Summary:
// The PA1 key.
Pa1 = 253,
//
// Summary:
// The CLEAR key.
OemClear = 254,
//
// Summary:
// The bitmask to extract a key code from a key value.
KeyCode = 65535,
//
// Summary:
// The SHIFT modifier key.
Shift = 65536,
//
// Summary:
// The CTRL modifier key.
Control = 131072,
//
// Summary:
// The ALT modifier key.
Alt = 262144
}
}
文章标题：C# monitor keyboard and print pressed key
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