GDI+ 로 박스 그리고 그린객체 이동하기? 정도???

훈스에 올라온 질문에 답글한것임.. 


주석 없음! 



 public partial class Form1 : Form
    {
        Box b = new Box();
        public Form1()
        {
            InitializeComponent();
            b.Change += () => Invalidate();
        }
        int offset = 3;
        protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
        {
            if (keyData == Keys.Left)
            {
                b.X -= offset;
            }
            if (keyData == Keys.Right)
            {
                b.X += offset;
            }
            if (keyData == Keys.Up)
            {
                b.Y -= offset;
            }
            if (keyData == Keys.Down)
            {
                b.Y += offset;
            }

            return base.ProcessCmdKey(ref msg, keyData);
        }
        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);
            b.Draw(e.Graphics);
        }
    }
    public class Box
    {
        public delegate void __delegateOnChange();
        Rectangle rct = new Rectangle();
        public Box()
        {
            lineColor = Color.Red;
            lineWidth = 2f;
            rct.Width = 10;
            rct.Height = 10;
        }
        public Size Size { get { return rct.Size; } set { rct.Size = value; OnChange(); } }
        public Point Location { get { return rct.Location; } set { rct.Location = value; OnChange(); } }
        public int X { get { return rct.X; } set { rct.X = value; OnChange(); } }
        public int Y { get { return rct.Y; } set { rct.Y = value; OnChange(); } }
        public int Width { get { return rct.Width; } set { rct.Width = value; OnChange(); } }
        public int Height { get { return rct.Height; } set { rct.Height = value; OnChange(); } }
        Color lineColor = Color.Red;
        public Color LineColor { get { return lineColor; } set { lineColor = value; OnChange(); } }
        float lineWidth = 2f;
        public float LineWidth { get { return lineWidth; } set { lineWidth = value; OnChange(); } }
        public event __delegateOnChange Change = null;
        public virtual void OnChange()
        {
            if (Change != null) Change();
        }
        public void Draw(Graphics g)
        {
            g.DrawRectangle(new Pen(LineColor, LineWidth), this.rct);
        }
    }