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CC-Functions/W32/Hooks.cs
CreepyCrafter24 c8496f3baf Some stuffs
2019-10-05 16:37:31 +02:00

188 lines
6.5 KiB
C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Diagnostics;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Drawing;
namespace CC_Functions.W32
{
public sealed class KeyboardHookEventArgs : EventArgs
{
public KeyboardHookEventArgs(Keys key)
{
Key = key;
}
public Keys Key { get; }
public override string ToString() => Key.ToString();
}
public sealed class KeyboardHook : IDisposable
{
public void Dispose()
{
instances.Remove(this);
if (instances.Count == 0)
UnhookWindowsHookEx(_hookID);
}
private static List<KeyboardHook> instances = new List<KeyboardHook>();
private const int WH_KEYBOARD_LL = 13;
private const int WM_KEYDOWN = 0x0100;
private static LowLevelKeyboardProc _proc = HookCallback;
private static IntPtr _hookID = IntPtr.Zero;
public delegate void keyPress(KeyboardHookEventArgs _args);
public event keyPress OnKeyPress;
public KeyboardHook()
{
if (instances.Count == 0)
_hookID = SetHook(_proc);
instances.Add(this);
}
private IntPtr SetHook(LowLevelKeyboardProc proc)
{
using (Process curProcess = Process.GetCurrentProcess())
using (ProcessModule curModule = curProcess.MainModule)
{
return SetWindowsHookEx(WH_KEYBOARD_LL, proc, GetModuleHandle(curModule.ModuleName), 0);
}
}
private delegate IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam);
private static IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode >= 0 && wParam == (IntPtr)WM_KEYDOWN)
{
int vkCode = Marshal.ReadInt32(lParam);
for (int i = 0; i < instances.Count; i++)
{
instances[i].OnKeyPress?.Invoke(new KeyboardHookEventArgs((Keys)vkCode));
}
}
return CallNextHookEx(_hookID, nCode, wParam, lParam);
}
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr SetWindowsHookEx(int idHook, LowLevelKeyboardProc 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);
}
public class MouseHookEventArgs : EventArgs {
public MouseHookEventArgs(Point point, MouseHook.MouseMessages message)
{
Point = point;
Message = message;
}
public Point Point { get; }
public MouseHook.MouseMessages Message { get; }
public override string ToString()
{
return Message.ToString() + "; " + Point.ToString();
}
}
public class MouseHook : IDisposable
{
public void Dispose()
{
instances.Remove(this);
if (instances.Count == 0)
UnhookWindowsHookEx(_hookID);
}
private static List<MouseHook> instances = new List<MouseHook>();
private static LowLevelMouseProc _proc = HookCallback;
private static IntPtr _hookID = IntPtr.Zero;
public delegate void mouseEvent(MouseHookEventArgs _args);
public event mouseEvent OnMouse;
public MouseHook()
{
if (instances.Count == 0)
_hookID = SetHook(_proc);
instances.Add(this);
}
private static IntPtr SetHook(LowLevelMouseProc proc)
{
using (Process curProcess = Process.GetCurrentProcess())
using (ProcessModule curModule = curProcess.MainModule)
{
return SetWindowsHookEx(WH_MOUSE_LL, proc, GetModuleHandle(curModule.ModuleName), 0);
}
}
private delegate IntPtr LowLevelMouseProc(int nCode, IntPtr wParam, IntPtr lParam);
private static IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode >= 0)
{
MSLLHOOKSTRUCT hookStruct = (MSLLHOOKSTRUCT)Marshal.PtrToStructure(lParam, typeof(MSLLHOOKSTRUCT));
for (int i = 0; i < instances.Count; i++)
{
instances[i].OnMouse?.Invoke(new MouseHookEventArgs(new Point(hookStruct.pt.x, hookStruct.pt.y), (MouseMessages)wParam));
}
}
return CallNextHookEx(_hookID, nCode, wParam, lParam);
}
private const int WH_MOUSE_LL = 14;
public enum MouseMessages
{
WM_LBUTTONDOWN = 0x0201,
WM_LBUTTONUP = 0x0202,
WM_MOUSEMOVE = 0x0200,
WM_MOUSEWHEEL = 0x020A,
WM_RBUTTONDOWN = 0x0204,
WM_RBUTTONUP = 0x0205
}
[StructLayout(LayoutKind.Sequential)]
private struct POINT
{
public int x;
public int y;
}
[StructLayout(LayoutKind.Sequential)]
private struct MSLLHOOKSTRUCT
{
public POINT pt;
public uint mouseData;
public uint flags;
public uint time;
public IntPtr dwExtraInfo;
}
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr SetWindowsHookEx(int idHook, LowLevelMouseProc 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);
}
}