using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Windows.Forms;
public class KeyPressExample : Form
{
// Определяем необходимые константы
private const int WH_KEYBOARD_LL = 13;
private const int WM_KEYDOWN = 0x0100;
private const int WM_KEYUP = 0x0101;
// Указатель на процедуру для перехвата сообщений
private LowLevelKeyboardProc _proc;
private IntPtr _hookID = IntPtr.Zero;
public KeyPressExample()
{
_proc = HookCallback;
_hookID = SetHook(_proc);
}
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 IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode >= 0 && (wParam == (IntPtr)WM_KEYDOWN))
{
int vkCode = Marshal.ReadInt32(lParam);
if (vkCode == Keys.A.GetHashCode() || vkCode == Keys.B.GetHashCode())
{
Console.WriteLine($"Key Pressed: {((Keys)vkCode).ToString()}");
// Здесь можно добавить логику приоритета между A и B.
}
}
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);
protected override void OnFormClosing(FormClosingEventArgs e)
{
UnhookWindowsHookEx(_hookID);
base.OnFormClosing(e);
}
[STAThread]
static void Main()
{
Application.Run(new KeyPressExample());
}
}
