ICODEBROKER

using System;

using System.Drawing;

using System.Runtime.InteropServices;

using System.Windows.Forms;

namespace TestProject

{

    /// <summary>

    /// 메인 폼

    /// </summary>

    public partial class MainForm : Form

    {

        //////////////////////////////////////////////////////////////////////////////////////////////////// Import

        ////////////////////////////////////////////////////////////////////////////////////////// Static

        //////////////////////////////////////////////////////////////////////////////// Private

        #region 비트 복사하기 - BitBlt(targetHandle, targetX, targetY, targetWidth, targetHeight, sourceHandle, sourceX, sourceY,

            rasterOperation)

        /// <summary>

        /// 비트 복사하기

        /// </summary>

        /// <param name="targetHandle">타겟 디바이스 컨텍스트 핸들</param>

        /// <param name="targetX">타겟 X</param>

        /// <param name="targetY">타겟 Y</param>

        /// <param name="targetWidth">타겟 너비</param>

        /// <param name="targetHeight">타겟 높이</param>

        /// <param name="sourceHandle">소스 디바이스 컨텍스트 핸들</param>

        /// <param name="sourceX">소스 X</param>

        /// <param name="sourceY">소스 Y</param>

        /// <param name="rasterOperation">래스터 작업</param>

        /// <returns>처리 결과</returns>

        [DllImport("gdi32.dll")]

        private static extern int BitBlt(IntPtr targetHandle, int targetX, int targetY, int targetWidth, int targetHeight,

            IntPtr sourceHandle, int sourceX, int sourceY, int rasterOperation);

        #endregion

        #region 객체 선택하기 - SelectObject(targetHandle, sourceObjectHandle)

        /// <summary>

        /// 객체 선택하기

        /// </summary>

        /// <param name="targetHandle">타겟 디바이스 컨텍스트 핸들</param>

        /// <param name="sourceObjectHandle">소스 객체 핸들</param>

        /// <returns>이전 객체</returns>

        [DllImport("gdi32.dll", EntryPoint = "SelectObject")]

        private static extern IntPtr SelectObject(IntPtr targetHandle, IntPtr sourceObjectHandle);

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Field

        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region Field

        /// <summary>

        /// SRC_COPY

        /// </summary>

        private const int SRC_COPY = 0xcc0020;

        /// <summary>

        /// 사각형 비트맵

        /// </summary>

        private Bitmap rectangleBitmap;

        /// <summary>

        /// X

        /// </summary>

        private int x = 50;

        /// <summary>

        /// Y

        /// </summary>

        private int y = 50;

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor

        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - MainForm()

        /// <summary>

        /// 생성자

        /// </summary>

        public MainForm()

        {

            InitializeComponent();

            SetStyle(ControlStyles.DoubleBuffer        , true);

            SetStyle(ControlStyles.AllPaintingInWmPaint, true);

            SetStyle(ControlStyles.UserPaint           , true);

            Paint   += Form_Paint;

            KeyDown += Form_KeyDown;

            Load    += Form_Load;

        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method

        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region 폼 로드시 처리하기 - Form_Load(sender, e)

        /// <summary>

        /// 폼 로드시 처리하기

        /// </summary>

        /// <param name="sender">이벤트 발생자</param>

        /// <param name="e">이벤트 인자</param>

        private void Form_Load(object sender, EventArgs e)

        {

            using(Graphics graphics = CreateGraphics())

            {

                this.rectangleBitmap = new Bitmap(60, 60, graphics);

                using(Graphics bitmapGraphics = Graphics.FromImage(this.rectangleBitmap))

                {

                    bitmapGraphics.Clear(Color.White);

                    bitmapGraphics.DrawRectangle(Pens.Blue, 0, 0, 59, 59);

                }

            }

        }

        #endregion

        #region 폼 키 DOWN 처리하기 - Form_KeyDown(sender, e)

        /// <summary>

        /// 폼 키 DOWN 처리하기

        /// </summary>

        /// <param name="sender">이벤트 발생자</param>

        /// <param name="e">이벤트 인자</param>

        private void Form_KeyDown(object sender, KeyEventArgs e)

        {

            if(e.KeyCode == Keys.Up)

            {

                this.y -= 10;

            }

            else if(e.KeyCode == Keys.Down)

            {

                this.y += 10;

            }

            else if(e.KeyCode == Keys.Left)

            {

                this.x -= 10;

            }

            else if(e.KeyCode == Keys.Right)

            {

                this.x += 10;

            }

            Invalidate();

        }

        #endregion

        #region 폼 PAINT 처리하기 - Form_Paint(sender, e)

        /// <summary>

        /// 폼 PAINT 처리하기

        /// </summary>

        /// <param name="sender">이벤트 발생자</param>

        /// <param name="e">이벤트 인자</param>

        private void Form_Paint(object sender, PaintEventArgs e)

        {

            Graphics targetGraphics = e.Graphics;

            IntPtr targetDeviceContextHandle = targetGraphics.GetHdc();

            using(Graphics sourceGraphics = Graphics.FromImage(this.rectangleBitmap))

            {

                IntPtr sourceDeviceContextHandle = sourceGraphics.GetHdc();

                IntPtr previousObject = SelectObject(sourceDeviceContextHandle, this.rectangleBitmap.GetHbitmap());

                BitBlt(targetDeviceContextHandle, this.x, this.y, 60, 60, sourceDeviceContextHandle, 0, 0, SRC_COPY);

                sourceGraphics.ReleaseHdc(sourceDeviceContextHandle);

                if(previousObject != IntPtr.Zero)

                {

                    SelectObject(sourceDeviceContextHandle, previousObject);

                }

            }

            targetGraphics.ReleaseHdc(targetDeviceContextHandle);

        }

        #endregion

    }

}