AutoClicker.Win32.UnregisterHotKey C# (CSharp) Method

        public static extern bool UnregisterHotKey(IntPtr hWnd, int id);

        private void txtHotkey_KeyDown(object sender, KeyEventArgs e)
        {
            e.SuppressKeyPress = true;
            // Don't want to do anything if only a modifier key is pressed.
            //     Modifiers                                 Asian keys (kana, hanja, kanji etc)       IME related keys (convert etc)           Korean alt (process)  Windows keys
            if (!((e.KeyValue >= 16 && e.KeyValue <= 18) || (e.KeyValue >= 21 && e.KeyValue <= 25) || (e.KeyValue >= 28 && e.KeyValue <= 31) || e.KeyValue == 229 || (e.KeyValue >= 91 && e.KeyValue <= 92)))
            {
                Win32.UnregisterHotKey(this.Handle, (int)hotkey);
                hotkey = e.KeyData;
                // Extract modifiers
                hotkeyNodifiers = 0;
                if ((e.Modifiers & Keys.Shift) != 0)
                {
                    hotkeyNodifiers |= Win32.fsModifiers.Shift;
                }
                if ((e.Modifiers & Keys.Control) != 0)
                {
                    hotkeyNodifiers |= Win32.fsModifiers.Control;
                }
                if ((e.Modifiers & Keys.Alt) != 0)
                {
                    hotkeyNodifiers |= Win32.fsModifiers.Alt;
                }

                SetHotkey();
            }
        }