Question

我正在使用此代码作为热键管理器，我在另一篇文章中找到了这个代码：

public class HotKeyReader
    {
        public static event EventHandler<HotKeyEventArgs> HotKeyPressed;

        public static int RegisterHotKey(Keys key, KeyModifiers modifiers)
        {
            int id = System.Threading.Interlocked.Increment(ref _id);
            RegisterHotKey(_wnd.Handle, id, (uint)modifiers, (uint)key);
            return id;
        }

        public static bool UnregisterHotKey(int id)
        {
            return UnregisterHotKey(_wnd.Handle, id);
        }

        protected static void OnHotKeyPressed(HotKeyEventArgs e)
        {
            if (HotKeyReader.HotKeyPressed != null)
            {
                HotKeyReader.HotKeyPressed(null, e);
            }
        }

        private static MessageWindow _wnd = new MessageWindow();

        private class MessageWindow : Form
        {
            protected override void WndProc(ref Message m)
            {
                if (m.Msg == WM_HOTKEY)
                {
                    HotKeyEventArgs e = new HotKeyEventArgs(m.LParam);
                    HotKeyReader.OnHotKeyPressed(e);
                }

                base.WndProc(ref m);
            }

            private const int WM_HOTKEY = 0x312;
        }

        [DllImport("user32")]
        private static extern bool RegisterHotKey(IntPtr hWnd, int id, uint fsModifiers, uint vk);

        [DllImport("user32")]
        private static extern bool UnregisterHotKey(IntPtr hWnd, int id);

        private static int _id = 0;
    }


    public class HotKeyEventArgs : EventArgs
    {
        public readonly Keys Key;
        public readonly KeyModifiers Modifiers;

        public HotKeyEventArgs(Keys key, KeyModifiers modifiers)
        {
            this.Key = key;
            this.Modifiers = modifiers;
        }

        public HotKeyEventArgs(IntPtr hotKeyParam)
        {
            uint param = (uint)hotKeyParam.ToInt64();
            Key = (Keys)((param & 0xffff0000) >> 16);
            Modifiers = (KeyModifiers)(param & 0x0000ffff);
        }
    }

    [Flags]
    public enum KeyModifiers
    {
        Alt = 1,
        Control = 2,
        Shift = 4,
        Windows = 8,
        NoRepeat = 0x4000
    }

但是，当注册热键时，例如，只使用“a”，您就不能再在Windows中的任何其他位置使用“a”。反正有没有阻止这种情况发生？或者是否有更好的代码可以做同样的事情。

Answer 1

与SetWindowsHook一起安装的键盘钩子可以观察击键而不影响它向应用程序的传送。

全球热键专用键

1 个答案: