快捷键的TextBox控件

快捷键的TextBox控件

 

//HotKey.cs
//快捷键的支持

using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace DesktopPaintor
{
    class HotKey
    {
        private WinHotKey.KeyModifiers _Modifiers;
        private Keys _Key;

        public HotKey() { }
        public HotKey(WinHotKey.KeyModifiers Modifiers, Keys Key)
        {
            _Modifiers = Modifiers;
            _Key = Key;
        }
        public WinHotKey.KeyModifiers Modifiers
        {
            set { _Modifiers = value; } //& WinHotKey.KeyModifiers.Mask; }
            get { return _Modifiers; }
        }
        public Keys Key
        {
            set { _Key = value; }
            get { return _Key; }
        }
        public override string ToString()
        {
            string s = string.Empty;
            if((_Modifiers & WinHotKey.KeyModifiers.Control) != WinHotKey.KeyModifiers.None)
                s += "Ctrl + ";
            if((_Modifiers & WinHotKey.KeyModifiers.Shift) != WinHotKey.KeyModifiers.None)
                s += "Shift + ";
            if((_Modifiers & WinHotKey.KeyModifiers.Alt) != WinHotKey.KeyModifiers.None)
                s += "Alt + ";
            if(_Key != Keys.None || _Modifiers == WinHotKey.KeyModifiers.None)
                s += _Key.ToString();
            return s;
        }
        public HotKey Clone()
        {
            return new HotKey(_Modifiers, _Key);
        }
    }

    static class WinHotKey
    {
        [DllImport("user32.dll", SetLastError = true)]
        static extern bool RegisterHotKey(IntPtr hWnd, int id, KeyModifiers fsModifiers, Keys vk);

        [DllImport("user32.dll", SetLastError = true)]
        static extern bool UnregisterHotKey(IntPtr hWnd, int id);

        public static bool RegKey(IntPtr hWnd, int id, HotKey key)
        {
            return RegisterHotKey(hWnd, id, key.Modifiers, key.Key);
        }

        public static bool UnRegKey(IntPtr hWnd, int id)
        {
            return UnregisterHotKey(hWnd, id);
        }

        public enum KeyModifiers
        {
            None = 0,
            Alt = 1,
            Control = 2,
            Shift = 4,
            Windows = 8,
        }
    }
}

 

//HotKeyTextBox.cs
//快捷键HotKeyTextBox控件

using System.Windows.Forms;

namespace DesktopPaintor
{
    class HotKeyTextBox : TextBox
    {
        private HotKey _HotKey = new HotKey();
        private Keys LastKey;

        public HotKeyTextBox()
        {
            this.KeyDown += new KeyEventHandler(HotKeyTextBox_KeyDown);
            this.KeyUp += new KeyEventHandler(HotKeyTextBox_KeyUp);
            this.KeyPress += new KeyPressEventHandler(HotKeyTextBox_KeyPress);
            this.Text = _HotKey.ToString();
        }

        private void HotKeyTextBox_KeyPress(object sender, KeyPressEventArgs e)
        {
            e.Handled = true;
        }

        private void HotKeyTextBox_KeyUp(object sender, KeyEventArgs e)
        {
            if(!(e.KeyValue == 18 | e.KeyValue == 17 | e.KeyValue == 16))
                LastKey = Keys.None;
            if(_HotKey.Key == Keys.None)
            {
                string v = string.Empty;
                _HotKey.Modifiers = WinHotKey.KeyModifiers.None;
                if(e.Control)
                    _HotKey.Modifiers |= WinHotKey.KeyModifiers.Control;
                if(e.Shift)
                    _HotKey.Modifiers |= WinHotKey.KeyModifiers.Shift;
                if(e.Alt)
                    _HotKey.Modifiers |= WinHotKey.KeyModifiers.Alt;
                this.Text = _HotKey.ToString();
            }
        }

        private void HotKeyTextBox_KeyDown(object sender, KeyEventArgs e)
        {
            //91,LWin; 92,RWin; 93,Apps; 46,
            if(e.KeyValue == 46 || e.KeyValue == 93 || e.KeyValue == 92 || e.KeyValue == 91)
            {
                return;
            }
            string v = string.Empty;
            _HotKey.Modifiers = WinHotKey.KeyModifiers.None;
            if(e.Control)
                _HotKey.Modifiers |= WinHotKey.KeyModifiers.Control;
            if(e.Shift)
                _HotKey.Modifiers |= WinHotKey.KeyModifiers.Shift;
            if(e.Alt)
                _HotKey.Modifiers |= WinHotKey.KeyModifiers.Alt;
            if(e.KeyValue == 18 | e.KeyValue == 17 | e.KeyValue == 16)
            {
                if(LastKey == Keys.None)
                    _HotKey.Key = Keys.None;
            }
            else
                _HotKey.Key = e.KeyCode;
            this.Text = _HotKey.ToString();
        }

        public HotKey @HotKey
        {
            set
            {
                _HotKey = value;
                this.Text = value.ToString();
            }
            get
            {
                return _HotKey;
            }
        }
    }
}

 

 有了上面两个文件，再在窗体上直接画上HotKeyTextBox控件就OK了。