using System;
using System.Runtime.InteropServices;
using System.Drawing;
using System.Drawing.Imaging;
using System.Windows.Forms;
namespace SpriteWave
{
public class ColorBox : PictureBox
{
public const int Border = 2;
public byte[] Buffer;
private Size _oldSize;
private BitmapData _data;
public ColorBox()
{
_oldSize = new Size(0, 0);
}
public void Lock()
{
if (_oldSize != this.Size || this.Image == null)
{
this.Image = new Bitmap(this.Width, this.Height, PixelFormat.Format32bppArgb);
Buffer = new byte[this.Width * this.Height * 4];
}
_data = (this.Image as Bitmap).LockBits(
this.DisplayRectangle,
ImageLockMode.ReadWrite,
PixelFormat.Format32bppArgb
);
}
public void Unlock()
{
if (_data == null)
return;
Marshal.Copy(Buffer, 0, _data.Scan0, Buffer.Length);
(this.Image as Bitmap).UnlockBits(_data);
this.Invalidate();
_oldSize = this.Size;
}
}
}
