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| 1 | +using System; |
| 2 | +using System.Collections.Generic; |
| 3 | +using System.Linq; |
| 4 | +using SmartSystemMenu.Native; |
| 5 | +using SmartSystemMenu.Settings; |
| 6 | + |
| 7 | +namespace SmartSystemMenu.HotKeys |
| 8 | +{ |
| 9 | + class HotKeyHook : IDisposable |
| 10 | + { |
| 11 | + private IntPtr _hookHandle; |
| 12 | + private KeyboardHookProc _hookProc; |
| 13 | + private IList<MenuItem> _menuItems; |
| 14 | + |
| 15 | + public event EventHandler<HotKeyHookEventArgs> Hooked; |
| 16 | + |
| 17 | + public bool Start(string moduleName, IList<MenuItem> menuItems) |
| 18 | + { |
| 19 | + _menuItems = menuItems; |
| 20 | + _hookProc = HookProc; |
| 21 | + var moduleHandle = NativeMethods.GetModuleHandle(moduleName); |
| 22 | + _hookHandle = NativeMethods.SetWindowsHookEx(NativeConstants.WH_KEYBOARD_LL, _hookProc, moduleHandle, 0); |
| 23 | + var hookStarted = _hookHandle != IntPtr.Zero; |
| 24 | + return hookStarted; |
| 25 | + } |
| 26 | + |
| 27 | + public bool Stop() |
| 28 | + { |
| 29 | + if (_hookHandle == IntPtr.Zero) |
| 30 | + { |
| 31 | + return true; |
| 32 | + } |
| 33 | + var hookStoped = NativeMethods.UnhookWindowsHookEx(_hookHandle); |
| 34 | + return hookStoped; |
| 35 | + } |
| 36 | + |
| 37 | + public void Dispose() |
| 38 | + { |
| 39 | + Dispose(true); |
| 40 | + GC.SuppressFinalize(this); |
| 41 | + } |
| 42 | + |
| 43 | + protected virtual void Dispose(bool disposing) |
| 44 | + { |
| 45 | + if (disposing) |
| 46 | + { |
| 47 | + // get rid of managed resources |
| 48 | + } |
| 49 | + |
| 50 | + Stop(); |
| 51 | + } |
| 52 | + |
| 53 | + ~HotKeyHook() |
| 54 | + { |
| 55 | + Dispose(false); |
| 56 | + } |
| 57 | + |
| 58 | + private int HookProc(int code, IntPtr wParam, ref KBDLLHOOKSTRUCT lParam) |
| 59 | + { |
| 60 | + if (code == NativeConstants.HC_ACTION) |
| 61 | + { |
| 62 | + if (wParam.ToInt32() == NativeConstants.WM_KEYDOWN) |
| 63 | + { |
| 64 | + foreach (var item in _menuItems.Where(x => x.HotKeyEnabled)) |
| 65 | + { |
| 66 | + var key1 = true; |
| 67 | + var key2 = true; |
| 68 | + |
| 69 | + if (item.Key1 != VirtualKeyModifier.None) |
| 70 | + { |
| 71 | + var key1State = NativeMethods.GetAsyncKeyState((int)item.Key1) & 0x8000; |
| 72 | + key1 = Convert.ToBoolean(key1State); |
| 73 | + } |
| 74 | + |
| 75 | + if (item.Key2 != VirtualKeyModifier.None) |
| 76 | + { |
| 77 | + var key2State = NativeMethods.GetAsyncKeyState((int)item.Key2) & 0x8000; |
| 78 | + key2 = Convert.ToBoolean(key2State); |
| 79 | + } |
| 80 | + |
| 81 | + if (key1 && key2 && lParam.vkCode == (int)item.Key3) |
| 82 | + { |
| 83 | + var handler = Hooked; |
| 84 | + if (handler != null) |
| 85 | + { |
| 86 | + var menuItemId = MenuItemId.GetMenuItemId(item.Name); |
| 87 | + var eventArgs = new HotKeyHookEventArgs(menuItemId); |
| 88 | + handler.BeginInvoke(this, eventArgs, null, null); |
| 89 | + break; |
| 90 | + } |
| 91 | + } |
| 92 | + |
| 93 | + } |
| 94 | + } |
| 95 | + } |
| 96 | + |
| 97 | + return NativeMethods.CallNextHookEx(_hookHandle, code, wParam, ref lParam); |
| 98 | + } |
| 99 | + } |
| 100 | +} |
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