csharp WPF注册系统热键

Posted 2021-05-12

    internal static class HotKeyManager    {        private static IntPtr hwnd = IntPtr.Zero;        private static Dictionary<int, Action> hotkeyAction = new Dictionary<int, Action>();        public static void Init()        {            var source = HwndSource.FromHwnd(new WindowInteropHelper(App.Current.MainWindow).Handle);            source.AddHook(WndProc);            hwnd = source.Handle;        }        public static void UnInit()        {            var keys = hotkeyAction.Keys.ToList();            foreach (var id in keys)            {                UnRegister(id);            }        }        public static bool Register(int id, KeyModifiers control, Keys vk, Action action)        {            if (hwnd == IntPtr.Zero)            {                throw new Exception("No Init");            }            var isOk = Win32.RegisterHotKey(hwnd, id, (uint)control, vk);            if (isOk)            {                hotkeyAction.Add(id, action);                return true;            }            else            {                return false;            }        }        public static void UnRegister(int id)        {            if (hwnd != IntPtr.Zero)            {                if (hotkeyAction.ContainsKey(id))                {                    Win32.UnregisterHotKey(hwnd, id);                    hotkeyAction.Remove(id);                }            }        }        private static IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)        {            if (msg == 0x0312)            {                if (hotkeyAction.ContainsKey(wParam.ToInt32()))                {                    hotkeyAction[wParam.ToInt32()]();                }            }            return IntPtr.Zero;        }    }