96 lines
3.3 KiB
C#
96 lines
3.3 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Windows.Forms;
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namespace SafeMobileLib
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{
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public class KeyInterceptor
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{
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private GlobalKeyboardHook _globalKeyboardHook;
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private EventHandler<GlobalKeyboardHookEventArgs> callbackKeyboardHook;
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public enum KeyState { UP, DOWN, UNKNOWN};
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private Dictionary<int, KeyState> keyStates;
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private enum TriggerState { TRIGGERED, NOT_TRIGGERED };
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private TriggerState triggeredState = TriggerState.NOT_TRIGGERED;
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private Keys searchedKey;
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private Keys specialKey;
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private int specKey = 164;
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private int searKey = 65;
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public KeyInterceptor(Keys searchedKey, Keys specialKey)
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{
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keyStates = new Dictionary<int, KeyState>();
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this.searchedKey = searchedKey;
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this.specialKey = specialKey;
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searKey = (int)searchedKey;
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specKey = specialKey == Keys.Alt ? 164 : (specialKey == Keys.ShiftKey ? 160 : 162);
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keyStates.Add(searKey, KeyState.UNKNOWN);
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keyStates.Add(specKey, KeyState.UNKNOWN);
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keyStates.Add(0x73, KeyState.UNKNOWN);
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_globalKeyboardHook = new GlobalKeyboardHook();
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callbackKeyboardHook = new EventHandler<GlobalKeyboardHookEventArgs>(OnKeyPressed);
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_globalKeyboardHook.KeyboardPressed += callbackKeyboardHook;
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}
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private void OnKeyPressed(object sender, GlobalKeyboardHookEventArgs e)
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{
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if (!keyStates.ContainsKey(e.KeyboardData.VirtualCode))
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keyStates.Add(e.KeyboardData.VirtualCode, KeyState.UNKNOWN);
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keyStates[e.KeyboardData.VirtualCode] = (e.KeyboardState.ToString().ToLower().Contains("down") ? KeyState.DOWN : KeyState.UP);
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if (keyStates[164] == KeyState.DOWN && keyStates[0x73] == KeyState.DOWN)
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{
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Utils.WriteLine("Alt+F4 pressed", ConsoleColor.Green);
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}
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if (keyStates[specKey] == KeyState.DOWN && keyStates[searKey] == KeyState.DOWN)
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{
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if (triggeredState == TriggerState.NOT_TRIGGERED)
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{
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OnKeyPressedStateChanged?.Invoke((Keys)searKey, specKey == 164 ? Keys.Alt : (specKey == 160 ? Keys.ShiftKey : Keys.ControlKey), KeyState.DOWN);
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triggeredState = TriggerState.TRIGGERED;
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}
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}
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else
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{
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if (triggeredState == TriggerState.TRIGGERED)
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{
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OnKeyPressedStateChanged?.Invoke((Keys)searKey, specKey == 164 ? Keys.Alt : (specKey == 160 ? Keys.ShiftKey : Keys.ControlKey), KeyState.UP);
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triggeredState = TriggerState.NOT_TRIGGERED;
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}
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}
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if (e.KeyboardData.VirtualCode != GlobalKeyboardHook.VkSnapshot)
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return;
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if (e.KeyboardState == GlobalKeyboardHook.KeyboardState.KeyDown)
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{
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Utils.WriteLine("Print Screen", ConsoleColor.Red);
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e.Handled = true;
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}
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}
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public void Dispose()
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{
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_globalKeyboardHook?.Dispose();
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}
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public delegate void KeyStateChanged(Keys searchedKEy, Keys specialKey, KeyState state);
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public event KeyStateChanged OnKeyPressedStateChanged;
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}
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}
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