81 lines
2.7 KiB
C#
81 lines
2.7 KiB
C#
using System;
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using System.Runtime.InteropServices;
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namespace WeldingCommon.Views.DoorInterlock
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{
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public class KeyboardHook
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{
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private const int WH_KEYBOARD_LL = 13;
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private const int WM_KEYDOWN = 0x0100;
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private const int WM_SYSKEYDOWN = 0x0104;
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private const int VK_TAB = 0x09;
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private const int VK_MENU = 0x12;
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private const int VK_ALT = 0xA4;
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private const int VK_LWIN = 0x5B;
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private const int VK_RWIN = 0x5C;
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private readonly LowLevelKeyboardProc _proc;
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private IntPtr _hookID = IntPtr.Zero;
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public KeyboardHook()
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{
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_proc = HookCallback;
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}
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public void HookKeyboard()
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{
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_hookID = SetHook(_proc);
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}
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public void UnhookKeyboard()
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{
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UnhookWindowsHookEx(_hookID);
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}
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private IntPtr SetHook(LowLevelKeyboardProc proc)
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{
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using (var curProcess = System.Diagnostics.Process.GetCurrentProcess())
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using (var curModule = curProcess.MainModule) {
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return SetWindowsHookEx(WH_KEYBOARD_LL, proc,
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GetModuleHandle(curModule.ModuleName), 0);
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}
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}
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private IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
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{
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// Alt 키 막음
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if (nCode >= 0 && wParam == (IntPtr)WM_SYSKEYDOWN) {
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int vkCode = Marshal.ReadInt32(lParam);
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if (vkCode == VK_ALT) {
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return (IntPtr)1; // 키 입력 무시
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}
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}
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if (nCode >= 0 && wParam == (IntPtr)WM_KEYDOWN) {
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int vkCode = Marshal.ReadInt32(lParam);
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if (vkCode == VK_LWIN || vkCode == VK_RWIN) {
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return (IntPtr)1; // 키 입력 무시
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}
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}
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return CallNextHookEx(_hookID, nCode, wParam, lParam);
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}
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private delegate IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam);
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[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
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private static extern IntPtr SetWindowsHookEx(int idHook, LowLevelKeyboardProc lpfn, IntPtr hMod, uint dwThreadId);
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[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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private static extern bool UnhookWindowsHookEx(IntPtr hhk);
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[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
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private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, IntPtr lParam);
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[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
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private static extern IntPtr GetModuleHandle(string lpModuleName);
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}
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}
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