System.Drawing.Image.Dispose()

internal static unsafe Bitmap Load(byte[] webpBytes)
        {
            if (webpBytes == null)
            {
                throw new ArgumentNullException(nameof(webpBytes));
            }

            WebPNative.ImageInfo imageInfo;

            WebPNative.WebPGetImageInfo(webpBytes, out imageInfo);

            if (imageInfo.hasAnimation)
            {
                throw new WebPException(Resources.AnimatedWebPNotSupported);
            }

            Bitmap image = null;
            Bitmap temp = null;

            try
            {
                temp = new Bitmap(imageInfo.width, imageInfo.height, PixelFormat.Format32bppArgb);

                BitmapData bitmapData = temp.LockBits(new Rectangle(0, 0, imageInfo.width, imageInfo.height), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);

                try
                {
                    WebPNative.WebPLoad(webpBytes, bitmapData);
                }
                finally
                {
                    temp.UnlockBits(bitmapData);
                }

                image = temp;
                temp = null;
            }
            finally
            {
                if (temp != null)
                {
                    temp.Dispose();
                }
            }

            return image;
        }

public Icon GetNotifyIcon(Config config, Icon def)
        {
            try
            {
                Color color = ColorTranslator.FromHtml("#3399CC");
                int index = (int)config.sysProxyType;
                if (index > 0)
                {
                    color = (new Color[] { Color.Red, Color.Purple, Color.DarkGreen, Color.Orange, Color.DarkSlateBlue, Color.RoyalBlue })[index - 1];
                    //color = ColorTranslator.FromHtml(new string[] { "#CC0066", "#CC6600", "#99CC99", "#666699" }[index - 1]);
                }

                int width = 128;
                int height = 128;

                Bitmap bitmap = new Bitmap(width, height);
                Graphics graphics = Graphics.FromImage(bitmap);
                SolidBrush drawBrush = new SolidBrush(color);

                graphics.FillEllipse(drawBrush, new Rectangle(0, 0, width, height));
                int zoom = 16;
                graphics.DrawImage(new Bitmap(Properties.Resources.notify, width - zoom, width - zoom), zoom / 2, zoom / 2);

                Icon createdIcon = Icon.FromHandle(bitmap.GetHicon());

                drawBrush.Dispose();
                graphics.Dispose();
                bitmap.Dispose();

                return createdIcon;
            }
            catch (Exception ex)
            {
                Utils.SaveLog(ex.Message, ex);
                return def;
            }
        }

public void Compress()
        {
            var goldCompressedImage = new Bitmap(20, 20);
            var darkCompressedImage = new Bitmap(20, 20);

            var destRect = new Rectangle(0, 0, 20, 20);

            using (var graphics = Graphics.FromImage(goldCompressedImage))
            {
                graphics.CompositingMode = CompositingMode.SourceCopy;
                graphics.CompositingQuality = CompositingQuality.HighQuality;
                graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
                graphics.SmoothingMode = SmoothingMode.HighQuality;
                graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;

                using (var wrapMode = new ImageAttributes())
                {
                    wrapMode.SetWrapMode(WrapMode.TileFlipXY);
                    graphics.DrawImage(goldStar, destRect, 0, 0, goldStar.Width, goldStar.Height, GraphicsUnit.Pixel, wrapMode);
                }
            }
            goldStar.Dispose();
            goldStar = goldCompressedImage;

            using (var graphics = Graphics.FromImage(darkCompressedImage))
            {
                graphics.CompositingMode = CompositingMode.SourceCopy;
                graphics.CompositingQuality = CompositingQuality.HighQuality;
                graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
                graphics.SmoothingMode = SmoothingMode.HighQuality;
                graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;

                using (var wrapMode = new ImageAttributes())
                {
                    wrapMode.SetWrapMode(WrapMode.TileFlipXY);
                    graphics.DrawImage(darkStar, destRect, 0, 0, darkStar.Width, darkStar.Height, GraphicsUnit.Pixel, wrapMode);
                }
            }
            darkStar.Dispose();
            darkStar = darkCompressedImage;
        }

public void TestFont()
        {
            Image randomImage = new Bitmap(300, 50);
            Graphics g = Graphics.FromImage(randomImage);

            // Setup draw font: 20 symbols in max 170 width
            float l = 0, r = 40, m = -1;
            String measureString = new string('W', 2);

            // 10 iterations is enough
            for (int iter = 0; iter < 10; iter++)
            {
                m = (l + r) / 2;

                Font drawFont = new Font(FontFamily, m);

                // Measure string.
                SizeF stringSize = new SizeF();
                stringSize = g.MeasureString(measureString, drawFont);

                float width = stringSize.Width; //should take 170
                if (width < SWidth)
                    l = m;
                else
                    r = m;
            }
            drawFontSize = m;
            Console.WriteLine("Draw: {0}", m);

            // Setup med font: 1 symbols in max 20 height
            l = 0; r = 40; m = -1;
            measureString = "W";

            // 10 iterations is enough
            for (int iter = 0; iter < 10; iter++)
            {
                m = (l + r) / 2;

                Font drawFont = new Font(FontFamily, m);
                
                // Measure string.
                SizeF stringSize = new SizeF();
                stringSize = g.MeasureString(measureString, drawFont);

                float height = stringSize.Height; //should take HalfWidth
                if (height < SWidth)
                    l = m;
                else
                    r = m;
            }
            medFontSize = m;
            Console.WriteLine("Med: {0}", m);

            // Setup med font: 1 symbols in max 20 height
            l = 0; r = 40; m = -1;
            measureString = new string('W', 27);

            // 10 iterations is enough
            for (int iter = 0; iter < 10; iter++)
            {
                m = (l + r) / 2;

                Font drawFont = new Font(FontFamily, m);

                // Measure string.
                SizeF stringSize = new SizeF();
                stringSize = g.MeasureString(measureString, drawFont);

                float width = stringSize.Width; //should take 170
                float localScaleCoef = ld == null ? 1 : scaleCoef;

                if (width < HalfWidth * 2 * localScaleCoef)
                    l = m;
                else
                    r = m;
            }
            bigFontSize = m;
            Console.WriteLine("Big: {0}", m);

            g.Dispose();
            randomImage.Dispose();
        }

internal static void Encode(Texture texture, Image image, int level)
        {
            var width = texture.GetWidth(level);
            var height = texture.GetHeight(level);
            var data = new byte[width * height * 4];  // R G B A

            var bitmap = new Bitmap((int)width, (int)height);

            Graphics g = Graphics.FromImage(bitmap);
            g.InterpolationMode = InterpolationMode.HighQualityBilinear;
            g.DrawImage(image, 0, 0, (int)width, (int)height);
            g.Dispose();

            var rect = new Rectangle(0, 0, (int) width, (int) height);
            BitmapData bmpdata = bitmap.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);

            if (texture.TextureType == TextureType.A8R8G8B8)
            {
                Marshal.Copy(bmpdata.Scan0, data, 0, (int) width*(int) height*4);
            }
            else if (texture.TextureType == TextureType.L8)
            {
                var newData = new byte[width * height];

                // Convert to L8
                unsafe
                {
                    var p = (byte*)bmpdata.Scan0;
                    for (var y = 0; y < bitmap.Height; y++)
                    {
                        for (var x = 0; x < bitmap.Width; x++)
                        {
                            var offset = y * bmpdata.Stride + x * 4;
                            var dataOffset = y * width + x;

                            newData[dataOffset] = (byte)((p[offset + 2] + p[offset + 1] + p[offset + 0])/3);
                        }
                    }
                }

                data = newData;
            }
            else
            {
                // Convert from the B G R A format stored by GDI+ to R G B A
                unsafe
                {
                    var p = (byte*)bmpdata.Scan0;
                    for (var y = 0; y < bitmap.Height; y++)
                    {
                        for (var x = 0; x < bitmap.Width; x++)
                        {
                            var offset = y * bmpdata.Stride + x * 4;
                            var dataOffset = y * width * 4 + x * 4;
                            data[dataOffset + 0] = p[offset + 2];       // R
                            data[dataOffset + 1] = p[offset + 1];       // G
                            data[dataOffset + 2] = p[offset + 0];       // B
                            data[dataOffset + 3] = p[offset + 3];       // A
                        }
                    }
                }
            }

            bitmap.UnlockBits(bmpdata);

            bitmap.Dispose();

            switch (texture.TextureType)
            {
                case TextureType.DXT1:
                    data = DXTEncoder.EncodeDXT1(data, (int) width, (int) height);
                    break;
                case TextureType.DXT3:
                    data = DXTEncoder.EncodeDXT3(data, (int) width, (int) height);
                    break;
                case TextureType.DXT5:
                    data = DXTEncoder.EncodeDXT5(data, (int) width, (int) height);
                    break;
                case TextureType.A8R8G8B8:
                case TextureType.L8:
                    // Nothing to do
                    break;
                default:
                    throw new ArgumentOutOfRangeException();
            }

            texture.SetTextureData(level, data);
        }

public void Encode(Image image)
        {
            for(int i=0; i<Levels; i++)
            {
                TextureEncoder.Encode(this, image, i);
            }

            if (_thumbnailCache != null)
            {
                _thumbnailCache.Dispose();
                _thumbnailCache = null;
            }
        }

internal static ModelNode GenerateModel(Drawable drawable, TextureFile[] textures)
        {
            var random = new Random();

            var materials = new Material[drawable.Materials.Count];
            for (int i = 0; i < materials.Length; i++)
            {
                Brush brush =
                    new SolidColorBrush(System.Windows.Media.Color.FromArgb(255, (byte)random.Next(0, 255),
                                                                            (byte)random.Next(0, 255),
                                                                            (byte)random.Next(0, 255)));

                var drawableMat = drawable.Materials[i];
                var texture = drawableMat.Parameters[(int)ParamNameHash.Texture] as MaterialParamTexture;
                if (texture != null)
                {
                    // 1. Try looking in the embedded texture file (if any)
                    var textureObj = FindTexture(drawable.AttachedTexture, texture.TextureName);

                    // 2. Try looking in any attached external texture dictionaries
                    if (textureObj == null)
                    {
                        foreach (var file in textures)
                        {
                            textureObj = FindTexture(file, texture.TextureName);
                            if (textureObj != null)
                            {
                                break;
                            }
                        }
                    }

                    // Generate a brush if we were successful
                    if (textureObj != null)
                    {
                        var bitmap = textureObj.Decode() as Bitmap;

                        var bitmapSource = Imaging.CreateBitmapSourceFromHBitmap(
                            bitmap.GetHbitmap(),
                            IntPtr.Zero,
                            Int32Rect.Empty,
                            BitmapSizeOptions.FromEmptyOptions());

                        // For memory leak work around
                        bitmapSource.Freeze();

                        brush = new ImageBrush(bitmapSource);
                        (brush as ImageBrush).ViewportUnits = BrushMappingMode.Absolute;
                        (brush as ImageBrush).TileMode = TileMode.Tile;

                        bitmap.Dispose();
                    }
                }

                materials[i] = new DiffuseMaterial(brush);
            }

            var drawableModelGroup = new Model3DGroup();
            var drawableModelNode = new ModelNode {DataModel = drawable, Model3D = drawableModelGroup, Name = "Drawable", NoCount = true};
            foreach (var model in drawable.Models)
            {
                var modelGroup = new Model3DGroup();

                var modelNode = new ModelNode {DataModel = model, Model3D = modelGroup, Name = "Model"};
                drawableModelNode.Children.Add(modelNode);

                foreach (var geometry in model.Geometries)
                {
                    var geometryIndex = 0;
                    var geometryGroup = new Model3DGroup();

                    var geometryNode = new ModelNode { DataModel = geometry, Model3D = geometryGroup, Name = "Geometry" };
                    modelNode.Children.Add(geometryNode);

                    foreach (var mesh in geometry.Meshes)
                    {
                        var mesh3D = new MeshGeometry3D();

                        var meshNode = new ModelNode { DataModel = mesh, Model3D = null, Name = "Mesh" };
                        geometryNode.Children.Add(meshNode);

                        Data.Vertex[] vertices = mesh.DecodeVertexData();
                        foreach (var vertex in vertices)
                        {
                            mesh3D.Positions.Add(new Point3D(vertex.Position.X, vertex.Position.Y, vertex.Position.Z));
                            if (mesh.VertexHasNormal)
                            {
                                mesh3D.Normals.Add(new Vector3D(vertex.Normal.X, vertex.Normal.Y, vertex.Normal.Z));
                            }

                            if (mesh.VertexHasTexture)
                            {
                                mesh3D.TextureCoordinates.Add(new Point(vertex.TextureCoordinates[0].X, vertex.TextureCoordinates[0].Y));
                            }
                        }

                        ushort[] indices = mesh.DecodeIndexData();
                        for (int i = 0; i < mesh.FaceCount; i++)
                        {
                            mesh3D.TriangleIndices.Add(indices[i * 3 + 0]);
                            mesh3D.TriangleIndices.Add(indices[i * 3 + 1]);
                            mesh3D.TriangleIndices.Add(indices[i * 3 + 2]);
                        }

                        var material = materials[geometry.Meshes[geometryIndex].MaterialIndex];
                        var model3D = new GeometryModel3D(mesh3D, material);

                        geometryGroup.Children.Add(model3D);
                        meshNode.Model3D = model3D;

                        geometryIndex++;
                    }
                    modelGroup.Children.Add(geometryGroup);
                }
                drawableModelGroup.Children.Add(modelGroup);
            }
            return drawableModelNode;
        }

public void Dispose()
        {
            Info = null;

            if (_thumbnailCache != null)
            {
                _thumbnailCache.Dispose();
                _thumbnailCache = null;                
            }
        }

List<System.Drawing.Point> FindPicture(string subPic, string parPic, System.Drawing.Rectangle searchRect, byte errorRange, double matchRate = 0.9, bool isFindAll = false)
        {
            List<System.Drawing.Point> ListPoint = new List<System.Drawing.Point>();
            var subBitmap = new Bitmap(subPic);
            var parBitmap = new Bitmap(parPic);
            int subWidth = subBitmap.Width;
            int subHeight = subBitmap.Height;
            int parWidth = parBitmap.Width;
            int parHeight = parBitmap.Height;
            if (searchRect.IsEmpty)
            {
                searchRect = new System.Drawing.Rectangle(0, 0, parBitmap.Width, parBitmap.Height);
            }

            var searchLeftTop = searchRect.Location;
            var searchSize = searchRect.Size;
            System.Drawing.Color startPixelColor = subBitmap.GetPixel(0, 0);
            var subData = subBitmap.LockBits(new System.Drawing.Rectangle(0, 0, subBitmap.Width, subBitmap.Height), ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
            var parData = parBitmap.LockBits(new System.Drawing.Rectangle(0, 0, parBitmap.Width, parBitmap.Height), ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
            var byteArrarySub = new byte[subData.Stride * subData.Height];
            var byteArraryPar = new byte[parData.Stride * parData.Height];
            Marshal.Copy(subData.Scan0, byteArrarySub, 0, subData.Stride * subData.Height);
            Marshal.Copy(parData.Scan0, byteArraryPar, 0, parData.Stride * parData.Height);

            var iMax = searchLeftTop.Y + searchSize.Height - subData.Height;//行
            var jMax = searchLeftTop.X + searchSize.Width - subData.Width;//列

            int smallOffsetX = 0, smallOffsetY = 0;
            int smallStartX = 0, smallStartY = 0;
            int pointX = -1; int pointY = -1;
            for (int i = searchLeftTop.Y; i < iMax; i++)
            {
                for (int j = searchLeftTop.X; j < jMax; j++)
                {
                    //大图x，y坐标处的颜色值
                    int x = j, y = i;
                    int parIndex = i * parWidth * 4 + j * 4;
                    var colorBig = System.Drawing.Color.FromArgb(byteArraryPar[parIndex + 3], byteArraryPar[parIndex + 2], byteArraryPar[parIndex + 1], byteArraryPar[parIndex]);
                    ;
                    if (ColorAEqualColorB(colorBig, startPixelColor, errorRange))
                    {
                        smallStartX = x - smallOffsetX;//待找的图X坐标
                        smallStartY = y - smallOffsetY;//待找的图Y坐标
                        int sum = 0;//所有需要比对的有效点
                        int matchNum = 0;//成功匹配的点
                        for (int m = 0; m < subHeight; m++)
                        {
                            for (int n = 0; n < subWidth; n++)
                            {
                                int x1 = n, y1 = m;
                                int subIndex = m * subWidth * 4 + n * 4;
                                var color = System.Drawing.Color.FromArgb(byteArrarySub[subIndex + 3], byteArrarySub[subIndex + 2], byteArrarySub[subIndex + 1], byteArrarySub[subIndex]);

                                sum++;
                                int x2 = smallStartX + x1, y2 = smallStartY + y1;
                                int parReleativeIndex = y2 * parWidth * 4 + x2 * 4;//比对大图对应的像素点的颜色
                                var colorPixel = System.Drawing.Color.FromArgb(byteArraryPar[parReleativeIndex + 3], byteArraryPar[parReleativeIndex + 2], byteArraryPar[parReleativeIndex + 1], byteArraryPar[parReleativeIndex]);
                                if (ColorAEqualColorB(colorPixel, color, errorRange))
                                {
                                    matchNum++;
                                }
                            }
                        }
                        if ((double)matchNum / sum >= matchRate)
                        {
                            Console.WriteLine((double)matchNum / sum);
                            pointX = smallStartX + (int)(subWidth / 2.0);
                            pointY = smallStartY + (int)(subHeight / 2.0);
                            var point = new System.Drawing.Point(pointX, pointY);
                            if (!ListContainsPoint(ListPoint, point, 10))
                            {
                                ListPoint.Add(point);
                            }
                            if (!isFindAll)
                            {
                                goto FIND_END;
                            }
                        }
                    }
                    //小图x1,y1坐标处的颜色值
                }
            }
        FIND_END:
            subBitmap.UnlockBits(subData);
            parBitmap.UnlockBits(parData);
            subBitmap.Dispose();
            parBitmap.Dispose();
            GC.Collect();
            return ListPoint;
        }

List<NumBody> FindText(string subPic, string parPic, System.Drawing.Rectangle searchRect, byte errorRange, double matchRate = 0.9, bool isFindAll = false)
        {

            List<NumBody> ListPoint = new List<NumBody>();
            var subBitmap = new Bitmap(subPic);
            var parBitmap = new Bitmap(parPic);
            int subWidth = subBitmap.Width;
            int subHeight = subBitmap.Height;
            int parWidth = parBitmap.Width;
            int parHeight = parBitmap.Height;
            var bgColor = subBitmap.GetPixel(0, 0);//背景红色
            if (searchRect.IsEmpty)
            {
                searchRect = new System.Drawing.Rectangle(0, 0, parBitmap.Width, parBitmap.Height);
            }
            var searchLeftTop = searchRect.Location;
            var searchSize = searchRect.Size;
            var subData = subBitmap.LockBits(new System.Drawing.Rectangle(0, 0, subBitmap.Width, subBitmap.Height), ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
            var parData = parBitmap.LockBits(new System.Drawing.Rectangle(0, 0, parBitmap.Width, parBitmap.Height), ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
            var byteArrarySub = new byte[subData.Stride * subData.Height];
            var byteArraryPar = new byte[parData.Stride * parData.Height];
            Marshal.Copy(subData.Scan0, byteArrarySub, 0, subData.Stride * subData.Height);
            Marshal.Copy(parData.Scan0, byteArraryPar, 0, parData.Stride * parData.Height);
            var iMax = searchLeftTop.Y + searchSize.Height - subData.Height;//行
            var jMax = searchLeftTop.X + searchSize.Width - subData.Width;//列
            System.Drawing.Color startPixelColor = System.Drawing.Color.FromArgb(0, 0, 0);
            int smallOffsetX = 0, smallOffsetY = 0;
            int smallStartX = 0, smallStartY = 0;
            int pointX = -1; int pointY = -1;


            for (int m = 0; m < subHeight; m++)
            {
                for (int n = 0; n < subWidth; n++)
                {
                    smallOffsetX = n;
                    smallOffsetY = m;
                    int subIndex = m * subWidth * 4 + n * 4;
                    var color = System.Drawing.Color.FromArgb(byteArrarySub[subIndex + 3], byteArrarySub[subIndex + 2], byteArrarySub[subIndex + 1], byteArrarySub[subIndex]);
                    if (!ColorAEqualColorB(color, bgColor, errorRange))
                    {
                        startPixelColor = color;
                        goto END;
                    }
                }
            }

        END:
            for (int i = searchLeftTop.Y; i < iMax; i++)
            {
                for (int j = searchLeftTop.X; j < jMax; j++)
                {
                    //大图x，y坐标处的颜色值
                    int x = j, y = i;
                    int parIndex = i * parWidth * 4 + j * 4;
                    var colorBig = System.Drawing.Color.FromArgb(byteArraryPar[parIndex + 3], byteArraryPar[parIndex + 2], byteArraryPar[parIndex + 1], byteArraryPar[parIndex]);
                    ;

                    List<System.Drawing.Point> myListPoint = new List<System.Drawing.Point>();
                    if (ColorAEqualColorB(colorBig, startPixelColor, errorRange))
                    {
                        smallStartX = x - smallOffsetX;//待找的图X坐标
                        smallStartY = y - smallOffsetY;//待找的图Y坐标
                        int sum = 0;//所有需要比对的有效点
                        int matchNum = 0;//成功匹配的点
                        for (int m = 0; m < subHeight; m++)
                        {
                            for (int n = 0; n < subWidth; n++)
                            {
                                int x1 = n, y1 = m;
                                int subIndex = m * subWidth * 4 + n * 4;
                                var color = System.Drawing.Color.FromArgb(byteArrarySub[subIndex + 3], byteArrarySub[subIndex + 2], byteArrarySub[subIndex + 1], byteArrarySub[subIndex]);
                                if (color != bgColor)
                                {
                                    sum++;
                                    int x2 = smallStartX + x1, y2 = smallStartY + y1;
                                    int parReleativeIndex = y2 * parWidth * 4 + x2 * 4;//比对大图对应的像素点的颜色
                                    var colorPixel = System.Drawing.Color.FromArgb(byteArraryPar[parReleativeIndex + 3], byteArraryPar[parReleativeIndex + 2], byteArraryPar[parReleativeIndex + 1], byteArraryPar[parReleativeIndex]);
                                    if (ColorAEqualColorB(colorPixel, color, errorRange))
                                    {
                                        matchNum++;
                                    }
                                    myListPoint.Add(new System.Drawing.Point(x2, y2));
                                }
                            }
                        }

                        double rate = (double)matchNum / sum;
                        if (rate>= matchRate)
                        {
                            Console.WriteLine((double)matchNum / sum);
                            pointX = smallStartX + (int)(subWidth / 2.0);
                            pointY = smallStartY + (int)(subHeight / 2.0);
                            var point = new System.Drawing.Point(pointX, pointY);
                            if (!ListTextBodyContainsPoint(ListPoint, point, 1))
                            {
                                ListPoint.Add(new NumBody() { point = point, matchNum = matchNum,matchSum=sum, matchRate = rate, bodyCollectionPoint = myListPoint });
                            }
                            SearchNumbersByMatchNum(ref ListPoint);
                            if (!isFindAll)
                            {
                                goto FIND_END;
                            }
                        }
                    }
                    //小图x1,y1坐标处的颜色值
                }
            }
        FIND_END:
            subBitmap.UnlockBits(subData);
            parBitmap.UnlockBits(parData);
            subBitmap.Dispose();
            parBitmap.Dispose();
            GC.Collect();
            return ListPoint;
        }

public void Dispose()
        {
            M_Image.Dispose();
        }

public static void SaveGrayScale(
			Image image,
			string filename,
			uint nColors,
			bool fTransparent
			)
		{

			// GIF codec supports 256 colors maximum, monochrome minimum.
			if (nColors > 256)
				nColors = 256;
			if (nColors < 2)
				nColors = 2;

			// Make a new 8-BPP indexed bitmap that is the same size as the source image.
			int Width = image.Width;
			int Height = image.Height;

			// Always use PixelFormat8bppIndexed because that is the color
			// table-based interface to the GIF codec.
			Bitmap bitmap = new Bitmap(Width,
									Height,
									PixelFormat.Format8bppIndexed);

			// Create a color palette big enough to hold the colors you want.
			ColorPalette pal = GetColorPalette(nColors);

			// Initialize a new color table with entries that are determined
			// by some optimal palette-finding algorithm; for demonstration 
			// purposes, use a grayscale.
			for (uint i = 0; i < nColors; i++)
			{
				uint Alpha = 0xFF;                      // Colors are opaque.
				uint Intensity = i * 0xFF / (nColors - 1);    // Even distribution. 

				// The GIF encoder makes the first entry in the palette
				// that has a ZERO alpha the transparent color in the GIF.
				// Pick the first one arbitrarily, for demonstration purposes.

				if (i == 0 && fTransparent) // Make this color index...
					Alpha = 0;          // Transparent

				// Create a gray scale for demonstration purposes.
				// Otherwise, use your favorite color reduction algorithm
				// and an optimum palette for that algorithm generated here.
				// For example, a color histogram, or a median cut palette.
				pal.Entries[i] = Color.FromArgb((int)Alpha,
												(int)Intensity,
												(int)Intensity,
												(int)Intensity);
			}

			// Set the palette into the new Bitmap object.
			bitmap.Palette = pal;


			// Use GetPixel below to pull out the color data of Image.
			// Because GetPixel isn't defined on an Image, make a copy 
			// in a Bitmap instead. Make a new Bitmap that is the same size as the
			// image that you want to export. Or, try to
			// interpret the native pixel format of the image by using a LockBits
			// call. Use PixelFormat32BppARGB so you can wrap a Graphics  
			// around it.
			Bitmap BmpCopy = new Bitmap(Width,
									Height,
									PixelFormat.Format32bppArgb);
			{
				Graphics g = Graphics.FromImage(BmpCopy);

				g.PageUnit = GraphicsUnit.Pixel;

				// Transfer the Image to the Bitmap
				g.DrawImage(image, 0, 0, Width, Height);

				// g goes out of scope and is marked for garbage collection.
				// Force it, just to keep things clean.
				g.Dispose();
			}

			// Lock a rectangular portion of the bitmap for writing.
			BitmapData bitmapData;
			Rectangle rect = new Rectangle(0, 0, Width, Height);

			bitmapData = bitmap.LockBits(
				rect,
				ImageLockMode.WriteOnly,
				PixelFormat.Format8bppIndexed);

			// Write to the temporary buffer that is provided by LockBits.
			// Copy the pixels from the source image in this loop.
			// Because you want an index, convert RGB to the appropriate
			// palette index here.
			IntPtr pixels = bitmapData.Scan0;

			unsafe
			{
				// Get the pointer to the image bits.
				// This is the unsafe operation.
				byte* pBits;
				if (bitmapData.Stride > 0)
					pBits = (byte*)pixels.ToPointer();
				else
					// If the Stide is negative, Scan0 points to the last 
					// scanline in the buffer. To normalize the loop, obtain
					// a pointer to the front of the buffer that is located 
					// (Height-1) scanlines previous.
					pBits = (byte*)pixels.ToPointer() + bitmapData.Stride * (Height - 1);
				uint stride = (uint)Math.Abs(bitmapData.Stride);

				for (uint row = 0; row < Height; ++row)
				{
					for (uint col = 0; col < Width; ++col)
					{
						// Map palette indexes for a gray scale.
						// If you use some other technique to color convert,
						// put your favorite color reduction algorithm here.
						Color pixel;    // The source pixel.

						// The destination pixel.
						// The pointer to the color index byte of the
						// destination; this real pointer causes this
						// code to be considered unsafe.
						byte* p8bppPixel = pBits + row * stride + col;

						pixel = BmpCopy.GetPixel((int)col, (int)row);

						// Use luminance/chrominance conversion to get grayscale.
						// Basically, turn the image into black and white TV.
						// Do not calculate Cr or Cb because you 
						// discard the color anyway.
						// Y = Red * 0.299 + Green * 0.587 + Blue * 0.114

						// This expression is best as integer math for performance,
						// however, because GetPixel listed earlier is the slowest 
						// part of this loop, the expression is left as 
						// floating point for clarity.

						double luminance = (pixel.R * 0.299) +
							(pixel.G * 0.587) +
							(pixel.B * 0.114);

						// Gray scale is an intensity map from black to white.
						// Compute the index to the grayscale entry that
						// approximates the luminance, and then round the index.
						// Also, constrain the index choices by the number of
						// colors to do, and then set that pixel's index to the 
						// byte value.
						*p8bppPixel = (byte)(luminance * (nColors - 1) / 255 + 0.5);

					} /* end loop for col */
				} /* end loop for row */
			} /* end unsafe */

			// To commit the changes, unlock the portion of the bitmap.  
			bitmap.UnlockBits(bitmapData);

			bitmap.Save(filename, ImageFormat.Png);

			// Bitmap goes out of scope here and is also marked for
			// garbage collection.
			// Pal is referenced by bitmap and goes away.
			// BmpCopy goes out of scope here and is marked for garbage
			// collection. Force it, because it is probably quite large.
			// The same applies to bitmap.
			BmpCopy.Dispose();
			bitmap.Dispose();
		}

private static ColorPalette GetColorPalette(uint nColors)
		{
			// replacedume monochrome image.
			PixelFormat bitscolordepth = PixelFormat.Format1bppIndexed;
			ColorPalette palette;    // The Palette we are stealing
			Bitmap bitmap;     // The source of the stolen palette

			// Determine number of colors.
			if (nColors > 2)
				bitscolordepth = PixelFormat.Format4bppIndexed;
			if (nColors > 16)
				bitscolordepth = PixelFormat.Format8bppIndexed;

			// Make a new Bitmap object to get its Palette.
			bitmap = new Bitmap(1, 1, bitscolordepth);

			palette = bitmap.Palette;   // Grab the palette

			bitmap.Dispose();           // cleanup the source Bitmap

			return palette;             // Send the palette back
		}

private ColorPalette CreateNewColorPalette()
		{
			PixelFormat format = PixelFormat.Format1bppIndexed;
			ColorPalette palette = null;
			Bitmap bitmap = null;
			try
			{
				if (this._imgColors > 2)
				{
					format = PixelFormat.Format4bppIndexed;
				}
				if (this._imgColors > 0x10)
				{
					format = PixelFormat.Format8bppIndexed;
				}
				bitmap = new Bitmap(1, 1, format);
				palette = bitmap.Palette;
			}
			catch (Exception ex) { TraceLogger.Instance.WriteException(ex); throw; }
			finally
			{
				bitmap.Dispose();
			}
			return palette;
		}

public unsafe Image SaveImageWithNewColorTable(Image image)
		{
			Bitmap bitmap = null;
			Bitmap bitmap2 = null;
			Graphics graphics = null;
			BitmapData bitmapdata = null;
			BitmapData data2 = null;
			if (this._imgColors > 0x100)
			{
				this._imgColors = 0x100;
			}
			if (this._imgColors < 2)
			{
				this._imgColors = 2;
			}
			int width = image.Width;
			int height = image.Height;
			try
			{
				byte* numPtr;
				byte* numPtr2;
				bitmap = new Bitmap(width, height, PixelFormat.Format8bppIndexed);
				bitmap.Palette = this.pal;
				bitmap2 = new Bitmap(width, height, PixelFormat.Format32bppArgb);
				graphics = Graphics.FromImage(bitmap2);
				graphics.PageUnit = GraphicsUnit.Pixel;
				graphics.DrawImage(image, 0, 0, width, height);
				Rectangle rect = new Rectangle(0, 0, width, height);
				bitmapdata = bitmap.LockBits(rect, ImageLockMode.WriteOnly, PixelFormat.Format8bppIndexed);
				data2 = bitmap2.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
				IntPtr ptr = bitmapdata.Scan0;
				IntPtr ptr2 = data2.Scan0;
				if (bitmapdata.Stride > 0)
				{
					numPtr = (byte*)ptr.ToPointer();
				}
				else
				{
					numPtr = (byte*)ptr.ToPointer() + (bitmapdata.Stride * (height - 1));
				}
				if (data2.Stride > 0)
				{
					numPtr2 = (byte*)ptr2.ToPointer();
				}
				else
				{
					numPtr2 = (byte*)ptr2.ToPointer() + (data2.Stride * (height - 1));
				}
				uint num3 = (uint)Math.Abs(bitmapdata.Stride);
				uint num4 = (uint)Math.Abs(data2.Stride);
				for (uint i = 0; i < height; i++)
				{
					PixelData* dataPtr = (PixelData*)(numPtr2 + (i * num4));
					byte* numPtr3 = numPtr + (i * num3);
					for (uint j = 0; j < width; j++)
					{
						double num7 = ((dataPtr->red * 0.299) + (dataPtr->green * 0.587)) + (dataPtr->blue * 0.114);
						numPtr3[0] = (byte)(((num7 * (this._imgColors - 1)) / 255.0) + 0.5);
						dataPtr++;
						numPtr3++;
					}
				}
				bitmap.UnlockBits(bitmapdata);
			}
			catch (Exception ex) { TraceLogger.Instance.WriteException(ex); throw; }
			finally
			{
				bitmap2.UnlockBits(data2);
				bitmap2.Dispose();
				graphics.Dispose();
				bitmapdata = null;
				data2 = null;
			}
			return bitmap;
		}

private byte[] GetImageData(Image srcImage, out bool isGrayScale)
		{
			Image newImage;
			if (Global.Config.AgentGrayScale)
			{
				newImage = new ImageColorsConverter().SaveImageWithNewColorTable(srcImage);
				srcImage.Dispose();
				isGrayScale = true;
			}
			else
			{
				Bitmap bmp = new Bitmap(srcImage.Width, srcImage.Height, System.Drawing.Imaging.PixelFormat.Format16bppRgb555);
				using (Graphics g = Graphics.FromImage(bmp))
				{
					g.DrawImage(srcImage, 0, 0);
					srcImage.Dispose();
				}
				newImage = bmp;
				isGrayScale = false;
			}

			byte[] bsImageData;
			using (MemoryStream ms = new MemoryStream())
			{
				newImage.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
				bsImageData = ms.ToArray();
				newImage.Dispose();
			}
			return bsImageData;
		}

public static byte[] GrayScaleImage(byte[] bsImage, ImageFormat format)
		{
			Image newImage;
			using (MemoryStream msImage = new MemoryStream(bsImage))
			{
				var srcImage = Image.FromStream(msImage);
				newImage = GrayScaleImage(srcImage);
				//newImage = new ImageColorsConverter().SaveImageWithNewColorTable(srcImage);
				srcImage.Dispose();
			}
			byte[] bsData;
			using (MemoryStream msData = new MemoryStream())
			{
				newImage.Save(msData, format);
				bsData = msData.ToArray();
				newImage.Dispose();
			}
			return bsData;
		}

public static byte[] ShortColorImage(byte[] bsImage, ImageFormat format)
		{
			Image newImage;
			using (MemoryStream msImage = new MemoryStream(bsImage))
			{
				var srcImage = Image.FromStream(msImage);
				newImage = ShortColorImage(srcImage);
				srcImage.Dispose();
			}
			byte[] bsData;
			using (MemoryStream msData = new MemoryStream())
			{
				newImage.Save(msData, format);
				bsData = msData.ToArray();
				newImage.Dispose();
			}
			return bsData;
		}

public static Image TransparentColorImage(Image bgImage, Image srcImage, float ratio)
		{
			Debug.replacedert(srcImage != null && srcImage.PixelFormat == PixelFormat.Format16bppRgb555);
			Debug.replacedert(bgImage != null && bgImage.PixelFormat == PixelFormat.Format16bppRgb555);
			Debug.replacedert(srcImage.Width == bgImage.Width && srcImage.Height == bgImage.Height);
			Debug.replacedert(0 < ratio && ratio < 1);

			Image newImage = null;
			try
			{
				int width = bgImage.Width;
				int height = bgImage.Height;
				Rectangle rect = new Rectangle(0, 0, width, height);
				long diffMax = (int)(width * height * ratio);
				long diffCount = 0;

				Bitmap newBmp = new Bitmap(width, height, PixelFormat.Format16bppArgb1555);
				using (Bitmap srcBmp = new Bitmap(srcImage))
				using (Bitmap bgBmp = new Bitmap(bgImage))
				{
					BitmapData srcData = srcBmp.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format16bppRgb555);
					BitmapData bgData = bgBmp.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format16bppRgb555);
					BitmapData newData = newBmp.LockBits(rect, ImageLockMode.WriteOnly, PixelFormat.Format16bppArgb1555);
					Debug.replacedert(srcData.Stride == bgData.Stride && srcData.Stride == newData.Stride);
					int stride = srcData.Stride;
					unsafe
					{
						byte* pSrc = (byte*)srcData.Scan0.ToPointer();
						byte* pBkg = (byte*)bgData.Scan0.ToPointer();
						byte* pNew = (byte*)newData.Scan0.ToPointer();
						ushort* ps, pg, pn;
						for (int y = 0; y < height; ++y)
						{
							ps = (ushort*)(pSrc + (stride * y));
							pg = (ushort*)(pBkg+ (stride * y));
							pn = (ushort*)(pNew + (stride * y));
							for (int x = 0; x < width; ++x)
							{
								//if (0 == *ps)
								//    *pn = (ushort)(*ps | 0x8000);
								//else
									*pn = (ushort)((*pg == *ps) ? 0 : (*ps | 0x8000));
								++ps;
								++pg;
								++pn;

								diffCount += ((*pg == *ps) ? 0 : 1);
							}
							if (diffCount >= diffMax)
								break;
						}
					}
					srcBmp.UnlockBits(srcData);
					bgBmp.UnlockBits(bgData);
					newBmp.UnlockBits(newData);
				}

				if (diffCount < diffMax)
				{
					//newBmp.MakeTransparent(Color.Empty);
					newImage = newBmp;
				}
				else
				{
					newBmp.Dispose();
				}
			}
			catch (Exception ex) { TraceLogger.Instance.WriteException(ex); throw; }
			return newImage;
		}

public static Image TransparentImage8(Image bgImage, Image srcImage, float ratio)
		{
			Debug.replacedert(srcImage != null && srcImage.PixelFormat == PixelFormat.Format8bppIndexed);
			Debug.replacedert(bgImage != null && bgImage.PixelFormat == PixelFormat.Format8bppIndexed);
			Debug.replacedert(srcImage.Width == bgImage.Width && srcImage.Height == bgImage.Height);
			Debug.replacedert(0 < ratio && ratio < 1);

			Image newImage = null;
			try
			{
				int width = bgImage.Width;
				int height = bgImage.Height;
				Rectangle rect = new Rectangle(0, 0, width, height);
				long diffMax = (int)(width * height * ratio);
				long diffCount = 0;

				Bitmap newBmp = new Bitmap(width, height, PixelFormat.Format8bppIndexed);
				newBmp.Palette = srcImage.Palette;
				using (Bitmap srcBmp = new Bitmap(srcImage))
				using (Bitmap bkgBmp = new Bitmap(bgImage))
				{
					BitmapData srcData = srcBmp.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format8bppIndexed);
					BitmapData bkgData = bkgBmp.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format8bppIndexed);
					BitmapData newData = newBmp.LockBits(rect, ImageLockMode.WriteOnly, PixelFormat.Format8bppIndexed);
					unsafe
					{
						byte* pSrc = (byte*)srcData.Scan0.ToPointer();
						byte* pBkg = (byte*)bkgData.Scan0.ToPointer();
						byte* pNew = (byte*)newData.Scan0.ToPointer();
						byte* ps, pg, pn;
						for (int y = 0; y < height; ++y)
						{
							ps = pSrc + (y * srcData.Stride);
							pg = pBkg + (y * bkgData.Stride);
							pn = pNew + (y * newData.Stride);
							for (int x = 0; x < width; ++x)
							{
								if (0 == *ps)
									*pn = 0xFF;
								else
									*pn = (byte)((*pg == *ps) ? 0 : *ps);
								++ps;
								++pg;
								++pn;

								diffCount += ((*pg == *ps) ? 0 : 1);
							}
							if (diffCount >= diffMax)
								break;
						}
					}
					srcBmp.UnlockBits(srcData);
					bkgBmp.UnlockBits(bkgData);
					newBmp.UnlockBits(newData);
				}

				if (diffCount < diffMax)
				{
					newBmp.MakeTransparent(Color.Empty);
					newImage = newBmp;
				}
				else
				{
					newBmp.Dispose();
				}
			}
			catch (Exception ex) { TraceLogger.Instance.WriteException(ex); throw; }
			return newImage;
		}

public static Image _TransparentImage8(Image bgImage, Image srcImage, float ratio, out bool transparent)
		{
			Debug.replacedert(srcImage != null && srcImage.PixelFormat == PixelFormat.Format8bppIndexed);
			Debug.replacedert(bgImage != null && bgImage.PixelFormat == PixelFormat.Format8bppIndexed);
			Debug.replacedert(srcImage.Width == bgImage.Width && srcImage.Height == bgImage.Height);
			Debug.replacedert(0 < ratio && ratio < 1);

			transparent = false;
			Image newImage = srcImage;
			try
			{
				int width = bgImage.Width;
				int height = bgImage.Height;
				Rectangle rect = new Rectangle(0, 0, width, height);
				long diffMax = (int)(width * height * ratio);
				long diffCount = 0;

				Bitmap newBmp = new Bitmap(srcImage);
				using (Bitmap bgBmp = new Bitmap(bgImage))
				{
					BitmapData bgData = bgBmp.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format8bppIndexed);
					BitmapData newData = newBmp.LockBits(rect, ImageLockMode.ReadWrite, PixelFormat.Format8bppIndexed);
					unsafe
					{
						byte* pBkg = (byte*)bgData.Scan0.ToPointer();
						byte* pNew = (byte*)newData.Scan0.ToPointer();
						byte* pg = pBkg;
						byte* pn = pNew;
						for (int y = 0; y < height; ++y)
						{
							pg = pBkg + (y * bgData.Stride);
							pn = pNew + (y * newData.Stride);
							for (int x = 0; x < width; ++x)
							{
								diffCount += ((*pg == *pn) ? 0 : 1);
								if (0 == *pn)
									*pn = 1;
								else
									*pn = (byte)((*pg == *pn) ? 0 : *pn);
								++pg;
								++pn;
							}
							if (diffCount >= diffMax)
								break;
						}
					}
					newBmp.UnlockBits(newData);
					bgBmp.UnlockBits(bgData);
				}

				if (diffCount < diffMax)
				{
					newBmp.MakeTransparent(Color.Empty);
					newImage = newBmp;
					transparent = true;
				}
				else
				{
					newBmp.Dispose();
				}
			}
			catch (Exception ex) { TraceLogger.Instance.WriteException(ex); throw; }
			return newImage;
		}

public bool CompressImageData(bfbd.UltraRecord.Core.Snapshot sshot)
		{
			bool transparent = false;
			Image srcImage = Deserialize(sshot.ImageData);
			if (Global.Config.GrayScale)
			{
				var grayImage = ImageCompressEngine.GrayScaleImage(srcImage);
				srcImage.Dispose();

				sshot.ImageData = Serialize(grayImage);
				sshot.IsGrayScale = true;
				grayImage.Dispose();

				UpdateBackground(null, null);
			}
			else
			{
				var colorImage = ImageCompressEngine.ShortColorImage(srcImage);
				srcImage.Dispose();

				if (_bkgImage == null)
					UpdateBackground(sshot, colorImage);
				else if (_bkgSnapshot.WindowHandle != sshot.WindowHandle)
					UpdateBackground(sshot, colorImage);
				else if (colorImage.Width != _bkgImage.Width || colorImage.Height != _bkgImage.Height)
					UpdateBackground(sshot, colorImage);
				else
				{
					var transparentImage = ImageCompressEngine.TransparentColorImage(_bkgImage, colorImage, 0.1f);
					if (transparentImage == null)
						UpdateBackground(sshot, colorImage);
					else
					{
						colorImage.Dispose();
						colorImage = transparentImage;
						transparent = true;
					}
				}
				
				sshot.IsGrayScale = false;
				sshot.ImageData = Serialize(colorImage);
				if (transparent)
					sshot.BackgroundId = _bkgSnapshot.SnapshotId;
			}
			return transparent;
		}

private void UpdateBackground(Snapshot sshot, Image img)
		{
			if (_bkgImage != null)
				_bkgImage.Dispose();
			_bkgSnapshot = sshot;
			_bkgImage = img;
		}

public void CompressSnapshot(bfbd.UltraRecord.Core.Snapshot sshot, bool isGrayScale)
		{
			Debug.replacedert(sshot.ImageData != null && sshot.ImageData.Length > 0);

			using (MemoryStream ms = new MemoryStream(sshot.ImageData))
			{
				var img = Image.FromStream(ms);
				var bmp = isGrayScale ? ImageCompressEngine.GrayScaleBitmap(img) : ImageCompressEngine.ColorValueBitmap(img);
				img.Dispose();

				bool isBackground;
				byte[] bsData = CompressImageData(sshot.SnapshotId, bmp, out isBackground);

				Debug.replacedert(sshot.ScreenWidth == bmp.Width && sshot.ScreenHeight == bmp.Height);
				sshot.ScreenWidth = bmp.Width;
				sshot.ScreenHeight = bmp.Height;
				sshot.IsGrayScale = isGrayScale;
				sshot.ImageData = bsData;
				if (!isBackground)
					sshot.BackgroundId = _background.SnapshotId;

				bmp.Dispose();
			}
		}

public static Image GrayScaleCompress(Image image)
		{
			uint nColors = 256;
			bool fTransparent = true;

			// Make a new 8-BPP indexed bitmap that is the same size as the source image.
			int Width = image.Width;
			int Height = image.Height;

			// Always use PixelFormat8bppIndexed because that is the color
			// table-based interface to the GIF codec.
			Bitmap bitmap = new Bitmap(Width,
									Height,
									PixelFormat.Format8bppIndexed);

			// Create a color palette big enough to hold the colors you want.
			ColorPalette pal = GetColorPalette(nColors);

			// Initialize a new color table with entries that are determined
			// by some optimal palette-finding algorithm; for demonstration 
			// purposes, use a grayscale.
			for (uint i = 0; i < nColors; i++)
			{
				uint Alpha = 0xFF;                      // Colors are opaque.
				uint Intensity = i * 0xFF / (nColors - 1);    // Even distribution. 

				// The GIF encoder makes the first entry in the palette
				// that has a ZERO alpha the transparent color in the GIF.
				// Pick the first one arbitrarily, for demonstration purposes.

				if (i == 0 && fTransparent) // Make this color index...
					Alpha = 0;          // Transparent

				// Create a gray scale for demonstration purposes.
				// Otherwise, use your favorite color reduction algorithm
				// and an optimum palette for that algorithm generated here.
				// For example, a color histogram, or a median cut palette.
				pal.Entries[i] = Color.FromArgb((int)Alpha,
												(int)Intensity,
												(int)Intensity,
												(int)Intensity);
			}

			// Set the palette into the new Bitmap object.
			bitmap.Palette = pal;


			// Use GetPixel below to pull out the color data of Image.
			// Because GetPixel isn't defined on an Image, make a copy 
			// in a Bitmap instead. Make a new Bitmap that is the same size as the
			// image that you want to export. Or, try to
			// interpret the native pixel format of the image by using a LockBits
			// call. Use PixelFormat32BppARGB so you can wrap a Graphics  
			// around it.
			Bitmap BmpCopy = new Bitmap(Width,
									Height,
									PixelFormat.Format32bppArgb);
			{
				Graphics g = Graphics.FromImage(BmpCopy);

				g.PageUnit = GraphicsUnit.Pixel;

				// Transfer the Image to the Bitmap
				g.DrawImage(image, 0, 0, Width, Height);

				// g goes out of scope and is marked for garbage collection.
				// Force it, just to keep things clean.
				g.Dispose();
			}

			// Lock a rectangular portion of the bitmap for writing.
			BitmapData bitmapData;
			Rectangle rect = new Rectangle(0, 0, Width, Height);

			bitmapData = bitmap.LockBits(
				rect,
				ImageLockMode.WriteOnly,
				PixelFormat.Format8bppIndexed);

			// Write to the temporary buffer that is provided by LockBits.
			// Copy the pixels from the source image in this loop.
			// Because you want an index, convert RGB to the appropriate
			// palette index here.
			IntPtr pixels = bitmapData.Scan0;

			unsafe
			{
				// Get the pointer to the image bits.
				// This is the unsafe operation.
				byte* pBits;
				if (bitmapData.Stride > 0)
					pBits = (byte*)pixels.ToPointer();
				else
					// If the Stide is negative, Scan0 points to the last 
					// scanline in the buffer. To normalize the loop, obtain
					// a pointer to the front of the buffer that is located 
					// (Height-1) scanlines previous.
					pBits = (byte*)pixels.ToPointer() + bitmapData.Stride * (Height - 1);
				uint stride = (uint)Math.Abs(bitmapData.Stride);

				for (uint row = 0; row < Height; ++row)
				{
					for (uint col = 0; col < Width; ++col)
					{
						// Map palette indexes for a gray scale.
						// If you use some other technique to color convert,
						// put your favorite color reduction algorithm here.
						Color pixel;    // The source pixel.

						// The destination pixel.
						// The pointer to the color index byte of the
						// destination; this real pointer causes this
						// code to be considered unsafe.
						byte* p8bppPixel = pBits + row * stride + col;

						pixel = BmpCopy.GetPixel((int)col, (int)row);

						// Use luminance/chrominance conversion to get grayscale.
						// Basically, turn the image into black and white TV.
						// Do not calculate Cr or Cb because you 
						// discard the color anyway.
						// Y = Red * 0.299 + Green * 0.587 + Blue * 0.114

						// This expression is best as integer math for performance,
						// however, because GetPixel listed earlier is the slowest 
						// part of this loop, the expression is left as 
						// floating point for clarity.

						double luminance = (pixel.R * 0.299) +
							(pixel.G * 0.587) +
							(pixel.B * 0.114);

						// Gray scale is an intensity map from black to white.
						// Compute the index to the grayscale entry that
						// approximates the luminance, and then round the index.
						// Also, constrain the index choices by the number of
						// colors to do, and then set that pixel's index to the 
						// byte value.
						*p8bppPixel = (byte)(luminance * (nColors - 1) / 255 + 0.5);

					} /* end loop for col */
				} /* end loop for row */
			} /* end unsafe */

			// To commit the changes, unlock the portion of the bitmap.  
			bitmap.UnlockBits(bitmapData);

			// Bitmap goes out of scope here and is also marked for
			// garbage collection.
			// Pal is referenced by bitmap and goes away.
			// BmpCopy goes out of scope here and is marked for garbage
			// collection. Force it, because it is probably quite large.
			// The same applies to bitmap.
			BmpCopy.Dispose();
			//bitmap.Dispose();
			return bitmap;
		}

public static void SaveGrayScale(Image image, string filename, uint nColors, bool fTransparent)
		{

			// GIF codec supports 256 colors maximum, monochrome minimum.
			if (nColors > 256)
				nColors = 256;
			if (nColors < 2)
				nColors = 2;

			// Make a new 8-BPP indexed bitmap that is the same size as the source image.
			int Width = image.Width;
			int Height = image.Height;

			// Always use PixelFormat8bppIndexed because that is the color
			// table-based interface to the GIF codec.
			Bitmap bitmap = new Bitmap(Width,
									Height,
									PixelFormat.Format8bppIndexed);

			// Create a color palette big enough to hold the colors you want.
			ColorPalette pal = GetColorPalette(nColors);

			// Initialize a new color table with entries that are determined
			// by some optimal palette-finding algorithm; for demonstration 
			// purposes, use a grayscale.
			for (uint i = 0; i < nColors; i++)
			{
				uint Alpha = 0xFF;                      // Colors are opaque.
				uint Intensity = i * 0xFF / (nColors - 1);    // Even distribution. 

				// The GIF encoder makes the first entry in the palette
				// that has a ZERO alpha the transparent color in the GIF.
				// Pick the first one arbitrarily, for demonstration purposes.

				if (i == 0 && fTransparent) // Make this color index...
					Alpha = 0;          // Transparent

				// Create a gray scale for demonstration purposes.
				// Otherwise, use your favorite color reduction algorithm
				// and an optimum palette for that algorithm generated here.
				// For example, a color histogram, or a median cut palette.
				pal.Entries[i] = Color.FromArgb((int)Alpha,
												(int)Intensity,
												(int)Intensity,
												(int)Intensity);
			}

			// Set the palette into the new Bitmap object.
			bitmap.Palette = pal;


			// Use GetPixel below to pull out the color data of Image.
			// Because GetPixel isn't defined on an Image, make a copy 
			// in a Bitmap instead. Make a new Bitmap that is the same size as the
			// image that you want to export. Or, try to
			// interpret the native pixel format of the image by using a LockBits
			// call. Use PixelFormat32BppARGB so you can wrap a Graphics  
			// around it.
			Bitmap BmpCopy = new Bitmap(Width,
									Height,
									PixelFormat.Format32bppArgb);
			{
				Graphics g = Graphics.FromImage(BmpCopy);

				g.PageUnit = GraphicsUnit.Pixel;

				// Transfer the Image to the Bitmap
				g.DrawImage(image, 0, 0, Width, Height);

				// g goes out of scope and is marked for garbage collection.
				// Force it, just to keep things clean.
				g.Dispose();
			}

			// Lock a rectangular portion of the bitmap for writing.
			BitmapData bitmapData;
			Rectangle rect = new Rectangle(0, 0, Width, Height);

			bitmapData = bitmap.LockBits(
				rect,
				ImageLockMode.WriteOnly,
				PixelFormat.Format8bppIndexed);

			// Write to the temporary buffer that is provided by LockBits.
			// Copy the pixels from the source image in this loop.
			// Because you want an index, convert RGB to the appropriate
			// palette index here.
			IntPtr pixels = bitmapData.Scan0;

			unsafe
			{
				// Get the pointer to the image bits.
				// This is the unsafe operation.
				byte* pBits;
				if (bitmapData.Stride > 0)
					pBits = (byte*)pixels.ToPointer();
				else
					// If the Stide is negative, Scan0 points to the last 
					// scanline in the buffer. To normalize the loop, obtain
					// a pointer to the front of the buffer that is located 
					// (Height-1) scanlines previous.
					pBits = (byte*)pixels.ToPointer() + bitmapData.Stride * (Height - 1);
				uint stride = (uint)Math.Abs(bitmapData.Stride);

				for (uint row = 0; row < Height; ++row)
				{
					for (uint col = 0; col < Width; ++col)
					{
						// Map palette indexes for a gray scale.
						// If you use some other technique to color convert,
						// put your favorite color reduction algorithm here.
						Color pixel;    // The source pixel.

						// The destination pixel.
						// The pointer to the color index byte of the
						// destination; this real pointer causes this
						// code to be considered unsafe.
						byte* p8bppPixel = pBits + row * stride + col;

						pixel = BmpCopy.GetPixel((int)col, (int)row);

						// Use luminance/chrominance conversion to get grayscale.
						// Basically, turn the image into black and white TV.
						// Do not calculate Cr or Cb because you 
						// discard the color anyway.
						// Y = Red * 0.299 + Green * 0.587 + Blue * 0.114

						// This expression is best as integer math for performance,
						// however, because GetPixel listed earlier is the slowest 
						// part of this loop, the expression is left as 
						// floating point for clarity.

						double luminance = (pixel.R * 0.299) +
							(pixel.G * 0.587) +
							(pixel.B * 0.114);

						// Gray scale is an intensity map from black to white.
						// Compute the index to the grayscale entry that
						// approximates the luminance, and then round the index.
						// Also, constrain the index choices by the number of
						// colors to do, and then set that pixel's index to the 
						// byte value.
						*p8bppPixel = (byte)(luminance * (nColors - 1) / 255 + 0.5);

					} /* end loop for col */
				} /* end loop for row */
			} /* end unsafe */

			// To commit the changes, unlock the portion of the bitmap.  
			bitmap.UnlockBits(bitmapData);

			bitmap.Save(filename, ImageFormat.Png);

			// Bitmap goes out of scope here and is also marked for
			// garbage collection.
			// Pal is referenced by bitmap and goes away.
			// BmpCopy goes out of scope here and is marked for garbage
			// collection. Force it, because it is probably quite large.
			// The same applies to bitmap.
			BmpCopy.Dispose();
			bitmap.Dispose();
		}

public static Image GrayScale(Image image)
		{
			// Make a new 8-BPP indexed bitmap that is the same size as the source image.
			int Width = image.Width;
			int Height = image.Height;
			int nColors = 256;
			Bitmap bitmap = new Bitmap(Width, Height, PixelFormat.Format8bppIndexed);

			// fill palette
			ColorPalette pal = bitmap.Palette;
			for (int i = 0; i < nColors; i++)
			{
				int Alpha = (i == 0) ? 0x00 : 0xFF;
				int Intensity = i * 0xFF / (nColors - 1);
				pal.Entries[i] = Color.FromArgb(Alpha, Intensity, Intensity, Intensity);
			}

			Rectangle rect = new Rectangle(0, 0, Width, Height);

			BitmapData bitmapData = bitmap.LockBits(rect, ImageLockMode.WriteOnly, PixelFormat.Format8bppIndexed);

			// Write to the temporary buffer that is provided by LockBits.
			// Copy the pixels from the source image in this loop.
			// Because you want an index, convert RGB to the appropriate
			// palette index here.
			IntPtr pixels = bitmapData.Scan0;

			unsafe
			{
				// Get the pointer to the image bits.
				// This is the unsafe operation.
				byte* pBits;
				if (bitmapData.Stride > 0)
					pBits = (byte*)pixels.ToPointer();
				else
					// If the Stide is negative, Scan0 points to the last 
					// scanline in the buffer. To normalize the loop, obtain
					// a pointer to the front of the buffer that is located 
					// (Height-1) scanlines previous.
					pBits = (byte*)pixels.ToPointer() + bitmapData.Stride * (Height - 1);
				uint stride = (uint)Math.Abs(bitmapData.Stride);

				for (uint row = 0; row < Height; ++row)
				{
					for (uint col = 0; col < Width; ++col)
					{
						//Color pixel;    // The source pixel.

						// The destination pixel.
						// The pointer to the color index byte of the
						// destination; this real pointer causes this
						// code to be considered unsafe.
						byte* p8bppPixel = pBits + row * stride + col;

						//pixel = image.GetPixel((int)col, (int)row);

						// Use luminance/chrominance conversion to get grayscale.
						// Basically, turn the image into black and white TV.
						// Do not calculate Cr or Cb because you 
						// discard the color anyway.
						// Y = Red * 0.299 + Green * 0.587 + Blue * 0.114

						// This expression is best as integer math for performance,
						// however, because GetPixel listed earlier is the slowest 
						// part of this loop, the expression is left as 
						// floating point for clarity.

						//double luminance = (pixel.R * 0.299) +
						//    (pixel.G * 0.587) +
						//    (pixel.B * 0.114);

						// Gray scale is an intensity map from black to white.
						// Compute the index to the grayscale entry that
						// approximates the luminance, and then round the index.
						// Also, constrain the index choices by the number of
						// colors to do, and then set that pixel's index to the 
						// byte value.
						//*p8bppPixel = (byte)(luminance * (nColors - 1) / 255 + 0.5);

					} /* end loop for col */
				} /* end loop for row */
			} /* end unsafe */

			// To commit the changes, unlock the portion of the bitmap.  
			bitmap.UnlockBits(bitmapData);

			// Bitmap goes out of scope here and is also marked for
			// garbage collection.
			// Pal is referenced by bitmap and goes away.
			// BmpCopy goes out of scope here and is marked for garbage
			// collection. Force it, because it is probably quite large.
			// The same applies to bitmap.
			bitmap.Dispose();
			return null;
		}

public int PackImage(
			IEnumerable<string> imageFiles, 
			bool requirePowerOfTwo, 
			bool requireSquareImage, 
			int maximumWidth,
			int maximumHeight,
			int imagePadding,
			bool generateMap,
			out Bitmap outputImage, 
			out Dictionary<string, Rectangle> outputMap)
		{
			files = new List<string>(imageFiles);
			requirePow2 = requirePowerOfTwo;
			requireSquare = requireSquareImage;
			outputWidth = maximumWidth;
			outputHeight = maximumHeight;
			padding = imagePadding;

			outputImage = null;
			outputMap = null;

			// make sure our dictionaries are cleared before starting
			imageSizes.Clear();
			imagePlacement.Clear();

			// get the sizes of all the images
			foreach (var filePath in files)
			{
			    Bitmap bitmap;
			    using (var b = new Bitmap(filePath))
			    {
			        bitmap = new Bitmap(b); //FIXED! DARN NOOBS LOCKING MY FILESS!!!!! :trollface: - Alan, May 21, 3199BC
                    b.Dispose();
			    }
			    imageSizes.Add(filePath, bitmap.Size);
			}

			// sort our files by file size so we place large sprites first
			files.Sort(
				(f1, f2) =>
				{
					Size b1 = imageSizes[f1];
					Size b2 = imageSizes[f2];

					int c = -b1.Width.CompareTo(b2.Width);
					if (c != 0)
						return c;

					c = -b1.Height.CompareTo(b2.Height);
					if (c != 0)
						return c;

					return f1.CompareTo(f2);
				});

			// try to pack the images
			if (!PackImageRectangles())
				return -2;

			// make our output image
			outputImage = CreateOutputImage();
			if (outputImage == null)
				return -3;

			if (generateMap)
			{
				// go through our image placements and replace the width/height found in there with
				// each image's actual width/height (since the ones in imagePlacement will have padding)
				string[] keys = new string[imagePlacement.Keys.Count];
				imagePlacement.Keys.CopyTo(keys, 0);
				foreach (var k in keys)
				{
					// get the actual size
					Size s = imageSizes[k];

					// get the placement rectangle
					Rectangle r = imagePlacement[k];

					// set the proper size
					r.Width = s.Width;
					r.Height = s.Height;

					// insert back into the dictionary
					imagePlacement[k] = r;
				}

				// copy the placement dictionary to the output
				outputMap = new Dictionary<string, Rectangle>();
				foreach (var pair in imagePlacement)
				{
					outputMap.Add(pair.Key, pair.Value);
				}
			}

			// clear our dictionaries just to free up some memory
			imageSizes.Clear();
			imagePlacement.Clear();

			return 0;
		}

private Bitmap CreateOutputImage()
		{
			Bitmap outputImage = new Bitmap(outputWidth, outputHeight, PixelFormat.Format32bppArgb);

			// draw all the images into the output image
			foreach (var image in files)
			{
				Rectangle location = imagePlacement[image];



                //BUGFIX
                //WUUUUUUUUUUUUUUTTTTTTTTTTTT??? what kinda code is this that reads replaced twice? :(
                //TODO: fix all this sucky replaced!
			    Bitmap bitmap;
			    using (var b = new Bitmap(image))
			    {
			        bitmap = new Bitmap(b); //FIXED! DARN NOOBS LOCKING MY FILESS!!!!! :trollface: - Alan, May 21, 3199BC
			        b.Dispose(); 
			    }
                //END WUUUUUUUUTTTTTTT


                
				// copy pixels over to avoid antialiasing or any other side effects of drawing
				// the subimages to the output image using Graphics
				for (int x = 0; x < bitmap.Width; x++)
					for (int y = 0; y < bitmap.Height; y++)
						outputImage.SetPixel(location.X + x, location.Y + y, bitmap.GetPixel(x, y));
			}

			return outputImage;
		}

public override void Dispose() {

      largeFont.Dispose();
      largeFont = null;

      smallFont.Dispose();
      smallFont = null;

      darkWhite.Dispose();
      darkWhite = null;

      stringFormat.Dispose();
      stringFormat = null;

      trimStringFormat.Dispose();
      trimStringFormat = null;

      alignRightStringFormat.Dispose();
      alignRightStringFormat = null;     
 
      back.Dispose();
      back = null;

      barFore.Dispose();
      barFore = null;

      barBack.Dispose();
      barBack = null;

      background.Dispose();
      background = null;

      if (image != null) {
        image.Dispose();
        image = null;
      }

      if (fore != null) {
        fore.Dispose();
        fore = null;
      }

      base.Dispose();
    }

private void DrawBackground(Graphics g) {
      int w = Size.Width;
      int h = Size.Height;      

      if (w != background.Width || h != background.Height) {

        background.Dispose();
        background = new Bitmap(w, h, PixelFormat.Format32bppPArgb);
        using (Graphics graphics = Graphics.FromImage(background)) {

          DrawImageWidthBorder(graphics, w, h, back, topBorder, bottomBorder, 
            leftBorder, rightBorder);    
      
          if (fore != null)
            DrawImageWidthBorder(graphics, w, h, fore, topBorder, bottomBorder,
            leftBorder, rightBorder);

          if (image != null) {
            int width = w - leftBorder - rightBorder;
            int height = h - topBorder - bottomBorder;
            float xRatio = width / (float)image.Width;
            float yRatio = height / (float)image.Height;
            float destWidth, destHeight;
            float xOffset, yOffset;
            if (xRatio < yRatio) {
              destWidth = width;
              destHeight = image.Height * xRatio;
              xOffset = 0;
              yOffset = 0.5f * (height - destHeight);
            } else {
              destWidth = image.Width * yRatio;
              destHeight = height;
              xOffset = 0.5f * (width - destWidth);
              yOffset = 0;
            }

            graphics.DrawImage(image,
              new RectangleF(leftBorder + xOffset, topBorder + yOffset, 
                destWidth, destHeight));
          }
        }
      }

      g.DrawImageUnscaled(background, 0, 0);
    }

public void Dispose() {      
      Icon icon = notifyIcon.Icon;
      notifyIcon.Icon = null;
      if (icon != null)
        icon.Dispose();      
      notifyIcon.Dispose();

      if (brush != null)
        brush.Dispose();
      if (darkBrush != null)
        darkBrush.Dispose();
      pen.Dispose();
      graphics.Dispose();      
      bitmap.Dispose();
      font.Dispose();
      smallFont.Dispose();
    }

private static void SaveAsImage(IPrintable doreplacedent, string path,
			ImageFormat format, bool selectedOnly, bool transparent)
		{
			const int Margin = 20;

			RectangleF areaF = doreplacedent.GetPrintingArea(selectedOnly);
			areaF.Offset(0.5F, 0.5F);
			Rectangle area = Rectangle.FromLTRB((int) areaF.Left, (int) areaF.Top,
				(int) Math.Ceiling(areaF.Right), (int) Math.Ceiling(areaF.Bottom));

			if (format == ImageFormat.Emf) // Save to metafile
			{
				Graphics metaG = control.CreateGraphics();
				IntPtr hc = metaG.GetHdc();
				Graphics g = null;

				try
				{
					// Set drawing parameters
					Metafile meta = new Metafile(path, hc);
					g = Graphics.FromImage(meta);
					g.SmoothingMode = SmoothingMode.HighQuality;
					if (DiagramEditor.Settings.Default.UseClearTypeForImages)
						g.TextRenderingHint = TextRenderingHint.ClearTypeGridFit;
					else
						g.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;
					g.TranslateTransform(-area.Left, -area.Top);

					// Draw image
					IGraphics graphics = new GdiGraphics(g);
					doreplacedent.Print(graphics, selectedOnly, Style.CurrentStyle);

					meta.Dispose();
				}
				catch (Exception ex)
				{
					MessageBox.Show(
						string.Format("{0}\n{1}: {2}", Strings.ErrorInSavingImage,
							Strings.ErrorsReason, ex.Message),
						Strings.Error, MessageBoxButtons.OK, MessageBoxIcon.Error);
				}
				finally
				{
					metaG.ReleaseHdc();
					metaG.Dispose();
					if (g != null)
						g.Dispose();
				}
			}
			else // Save to rastered image
			{
				int width = area.Width + Margin * 2;
				int height = area.Height + Margin * 2;
				PixelFormat pixelFormat;

				if (transparent)
					pixelFormat = PixelFormat.Format32bppArgb;
				else
					pixelFormat = PixelFormat.Format24bppRgb;

				using (Bitmap image = new Bitmap(width, height, pixelFormat))
				using (Graphics g = Graphics.FromImage(image))
				{
					// Set drawing parameters
					g.SmoothingMode = SmoothingMode.HighQuality;
					if (DiagramEditor.Settings.Default.UseClearTypeForImages && !transparent)
						g.TextRenderingHint = TextRenderingHint.ClearTypeGridFit;
					else
						g.TextRenderingHint = TextRenderingHint.SingleBitPerPixelGridFit;
					g.TranslateTransform(Margin - area.Left, Margin - area.Top);

					// Draw image
					if (!transparent)
						g.Clear(Style.CurrentStyle.BackgroundColor);

					IGraphics graphics = new GdiGraphics(g);
					doreplacedent.Print(graphics, selectedOnly, Style.CurrentStyle);

					try
					{
						image.Save(path, format);
					}
					catch (Exception ex)
					{
						MessageBox.Show(
							string.Format("{0}\n{1}: {2}", Strings.ErrorInSavingImage,
								Strings.ErrorsReason, ex.Message),
							Strings.Error, MessageBoxButtons.OK, MessageBoxIcon.Error);
					}
				}
			}
		}

public static Image GetImage(string name) {
      name = "OpenHardwareMonitor.Resources." + name;

      string[] names = 
        replacedembly.GetExecutingreplacedembly().GetManifestResourceNames();
      for (int i = 0; i < names.Length; i++) {
        if (names[i].Replace('\\', '.') == name) {
          using (Stream stream = replacedembly.GetExecutingreplacedembly().
            GetManifestResourceStream(names[i])) {

            // "You must keep the stream open for the lifetime of the Image."
            Image image = Image.FromStream(stream);

            // so we just create a copy of the image 
            Bitmap bitmap = new Bitmap(image);

            // and dispose it right here
            image.Dispose();

            return bitmap;
          }
        }
      } 

      return new Bitmap(1, 1);    
    }

private void ServeResourceImage(HttpListenerResponse response, string name) {
      name = "OpenHardwareMonitor.Resources." + name;

      string[] names =
        replacedembly.GetExecutingreplacedembly().GetManifestResourceNames();
      for (int i = 0; i < names.Length; i++) {
        if (names[i].Replace('\\', '.') == name) {
          using (Stream stream = replacedembly.GetExecutingreplacedembly().
            GetManifestResourceStream(names[i])) {

            Image image = Image.FromStream(stream);
            response.ContentType = "image/png";
            try {
              Stream output = response.OutputStream;
              using (MemoryStream ms = new MemoryStream()) {
                image.Save(ms, ImageFormat.Png);
                ms.WriteTo(output);
              }
              output.Close();
            } catch (HttpListenerException) {              
            }
            image.Dispose();
            response.Close();
            return;
          }
        }
      }

      response.StatusCode = 404;
      response.Close();
    }

public override void CleanUp()
        {
            var imagesToRelease = imageCache.Keys.Where(i => !imagesInUse.Contains(i));
            foreach (var i in imagesToRelease)
            {
                var image = this.GetImage(i);
                image.Dispose();
                imageCache.Remove(i);
            }

            imagesInUse.Clear();
        }

private void mainPictureBox_Move(object sender, MouseEventArgs e)
        {
            if (e.X < rgIMD[cur].w + 2 * extend && e.Y < rgIMD[cur].h + 2 * extend)
            {
                this.Cursor = Cursors.Cross;
                Click0Label.Text = "" + e.X + "/" + (rgIMD[cur].w + 2 * extend) + ", " + e.Y + "/" + (rgIMD[cur].w + 2 * extend);

                if (ptr == -1)
                {
                    Bitmap dest = (Bitmap)bmp.Clone();
                    Graphics g = Graphics.FromImage(dest);
                    Pen p = new Pen(Color.Blue, 1);
                    g.DrawLine(p, new Point(e.X, e.Y - 20), new Point(e.X, e.Y + 20));
                    g.DrawLine(p, new Point(e.X - 20, e.Y), new Point(e.X + 20, e.Y));
                    g.Dispose();
                    p.Dispose();
                    Graphics g1 = this.mainPictureBox.CreateGraphics();
                    g1.DrawImage(dest, new Point(0, 0));
                    g1.Dispose();
                    dest.Dispose();
                }
                else if (ptr == 0) {
                    Bitmap dest = (Bitmap)bmp.Clone();
                    Graphics g = Graphics.FromImage(dest);
                    Pen p = new Pen(Color.Blue, 1);
                    newpoint[0] = clkpoint[0];
                    newpoint[2].X = e.X;
                    newpoint[2].Y = e.Y;
                    newpoint[1].X = clkpoint[0].X;
                    newpoint[1].Y = e.Y;
                    newpoint[3].X = e.X;
                    newpoint[3].Y = clkpoint[0].Y;
                    g.DrawPolygon(p, newpoint);
                    g.Dispose();
                    p.Dispose();
                    Graphics g1 = this.mainPictureBox.CreateGraphics();
                    g1.DrawImage(dest, new Point(0, 0));
                    g1.Dispose();
                    dest.Dispose();
                }
                else if (ptr == 1)
                {
                    Bitmap dest = (Bitmap)bmp.Clone();
                    Graphics g = Graphics.FromImage(dest);
                    Pen p = new Pen(Color.Blue, 1);
                    if (clkpoint[1].X < clkpoint[0].X)
                    {
                        newpoint[0] = new Point(clkpoint[1].X, clkpoint[1].Y);
                        newpoint[2] = new Point(clkpoint[0].X, clkpoint[0].Y);
                    }
                    else
                    {
                        newpoint[0] = new Point(clkpoint[0].X, clkpoint[0].Y);
                        newpoint[2] = new Point(clkpoint[1].X, clkpoint[1].Y);
                    }
                    double pang = Math.Atan2((double)(e.Y - newpoint[0].Y), (double)(e.X - newpoint[0].X));
                    ang = (int)(pang / Math.PI * 180.0);
                    Click2Label.Text = "" + ang + "°";
                    if (ang == 0 || ang == 90 || ang == -90)
                    {
                        newpoint[1] = new Point(newpoint[0].X, newpoint[2].Y);
                        newpoint[3] = new Point(newpoint[2].X, newpoint[0].Y);
                    }
                    else
                    {
                        double alp = ang / 180.0 * Math.PI;
                        double beta = Math.Atan2((double)(newpoint[2].Y - newpoint[0].Y), (double)(newpoint[2].X - newpoint[0].X));
                        double le = Math.Sqrt((newpoint[2].Y - newpoint[0].Y) * (newpoint[2].Y - newpoint[0].Y) + (newpoint[2].X - newpoint[0].X) * (newpoint[2].X - newpoint[0].X));
                        int mx = (int)(le * Math.Cos(alp - beta) * Math.Cos(alp));
                        int my = (int)(le * Math.Cos(alp - beta) * Math.Sin(alp));
                        newpoint[1] = new Point(newpoint[0].X + mx, newpoint[0].Y + my);
                        newpoint[3] = new Point(newpoint[2].X - mx, newpoint[2].Y - my);
                    }
                    g.DrawPolygon(p,newpoint);
                    g.Dispose();
                    p.Dispose();
                    Graphics g1 = this.mainPictureBox.CreateGraphics();
                    g1.DrawImage(dest, new Point(0, 0));
                    g1.Dispose();
                    dest.Dispose();
                }
            }
            else
            {
                this.Cursor = Cursors.Default;
                Click0Label.Text = "" + e.X + "/" + (rgIMD[cur].w + 2 * extend) + ", " + e.Y + "/" + (rgIMD[cur].w + 2 * extend);
            }
        }

private void sealButton_Click(object sender, EventArgs e)
        {
            if (1 == ptr && clkpoint[0].X != clkpoint[1].X && clkpoint[0].Y != clkpoint[1].Y)
            {
                newpoint[0] = clkpoint[0];
                newpoint[2] = clkpoint[1];
                newpoint[1].X = clkpoint[0].X;
                newpoint[1].Y = clkpoint[1].Y;
                newpoint[3].X = clkpoint[1].X;
                newpoint[3].Y = clkpoint[0].Y;
                ang = 0;
                Bitmap dest = (Bitmap)bmp.Clone();
                Graphics g = Graphics.FromImage(dest);
                Pen p = new Pen(Color.Blue, 1);
                g.DrawPolygon(p, newpoint);
                g.Dispose();
                p.Dispose();
                Graphics g1 = this.mainPictureBox.CreateGraphics();
                g1.DrawImage(dest, new Point(0, 0));
                g1.Dispose();
                dest.Dispose();
                ptr = 2;
                sealButton.Enabled = false;
                Confirm.Enabled = true;
                Click2Label.Text = "" + ang + "°";
            }
            else
            {
                MessageBox.Show("Wrong Seal!");
            }
            //OperateClick();
        }

public Image GetImg()
        {
            Image tmp_img = null;
            if (null == img)
            {
                try
                {
                    img = Image.FromFile(path);
                    ratio = 1.0f;
                    height = img.Height;
                    width = img.Width;
                    //MessageBox.Show(MainForm.maxH.ToString() + "," + MainForm.maxW.ToString());

                    if (1.0 * height / (MainForm.maxH-2*extend) > 1.0 * width / (MainForm.maxW-2*extend))
                    {
                        if (height > (MainForm.maxH-2*extend))
                        {
                            ratio = 1.0f * (MainForm.maxH-2*extend) / height;
                        }
                    }
                    else
                    {
                        if (width > (MainForm.maxW-2*extend))
                        {
                            ratio = 1.0f * (MainForm.maxW-2*extend) / width;
                        }
                    }
                    //tmp_img = (Bitmap)img.Clone();

                    if (ratio < 1.0f)
                    {
                        //MessageBox.Show("ERROR");
                        Image souImg = img;
                        h = Convert.ToInt32(ratio * height);
                        w = Convert.ToInt32(ratio * width);
                        tmp_img = new Bitmap(w+2*extend, h+2*extend);
                        //MessageBox.Show((h+extend).ToString() + "," + (w+extend).ToString());
                        Graphics g = Graphics.FromImage(tmp_img);
                        g.Clear(Color.White);
                        g.InterpolationMode = InterpolationMode.High;
                        g.SmoothingMode = SmoothingMode.HighQuality;
                        g.DrawImage(souImg, new Rectangle(extend, extend, w, h), new Rectangle(0, 0, width, height), GraphicsUnit.Pixel);
                    }
                    else
                    {
                        Image souImg = img;
                        h = height;
                        w = width;
                        //MessageBox.Show(h.ToString()+","+w.ToString());
                        tmp_img = new Bitmap(w + 2 * extend, h + 2 * extend);
                        Graphics g = Graphics.FromImage(tmp_img);
                        g.Clear(Color.White);
                        g.DrawImage(souImg, new Rectangle(extend, extend, w, h), new Rectangle(0, 0, width, height), GraphicsUnit.Pixel);
                    }
                }
                catch
                {
                    img = null;
                }
            }
            img.Dispose();
            img = null;
            return tmp_img;
        }

public void deldetimg()
        {
            img.Dispose();
            img = null;
            File.Delete(path);
            File.Delete(metaPath);
            path = null;
            metaPath = null;
        }

private void mainPictureBox_Click(object sender, MouseEventArgs e)
        {
            if (e.X < rgIMD[cur].w+2*extend && e.Y < rgIMD[cur].h+2*extend)
            {
                ptr++;
                if (ptr < 2)
                    clkpoint[ptr] = new Point(e.X, e.Y);

                sealButton.Enabled = false;
                if (0 == ptr)
                {
                    undoButton.Enabled = false;
                    clearButton.Enabled = false;
                    redrawButton.Enabled = true;
                }
                else if (1 == ptr)
                {
                    sealButton.Enabled = true;
                }
                else if (2 == ptr)
                {
                    Bitmap dest = (Bitmap)bmp.Clone();
                    Graphics g = Graphics.FromImage(dest);
                    Pen p = new Pen(Color.Blue, 1);
                    if (clkpoint[1].X < clkpoint[0].X)
                    {
                        newpoint[0] = new Point(clkpoint[1].X, clkpoint[1].Y);
                        newpoint[2] = new Point(clkpoint[0].X, clkpoint[0].Y);
                    }
                    else
                    {
                        newpoint[0] = new Point(clkpoint[0].X, clkpoint[0].Y);
                        newpoint[2] = new Point(clkpoint[1].X, clkpoint[1].Y);
                    }
                    double pang = Math.Atan2((double)(e.Y - newpoint[0].Y), (double)(e.X - newpoint[0].X));
                    ang = (int)(pang / Math.PI * 180.0);
                    Click2Label.Text = "" + ang + "°";
                    if (ang == 0 || ang == 90 || ang == -90)
                    {
                        newpoint[1] = new Point(newpoint[0].X, newpoint[2].Y);
                        newpoint[3] = new Point(newpoint[2].X, newpoint[0].Y);
                    }
                    else
                    {
                        double alp = ang / 180.0 * Math.PI;
                        double beta = Math.Atan2((double)(newpoint[2].Y - newpoint[0].Y), (double)(newpoint[2].X - newpoint[0].X));
                        double le = Math.Sqrt((newpoint[2].Y - newpoint[0].Y) * (newpoint[2].Y - newpoint[0].Y) + (newpoint[2].X - newpoint[0].X) * (newpoint[2].X - newpoint[0].X));
                        int mx = (int)(le * Math.Cos(alp - beta) * Math.Cos(alp));
                        int my = (int)(le * Math.Cos(alp - beta) * Math.Sin(alp));
                        newpoint[1] = new Point(newpoint[0].X + mx, newpoint[0].Y + my);
                        newpoint[3] = new Point(newpoint[2].X - mx, newpoint[2].Y - my);
                    }
                    g.DrawPolygon(p, newpoint);
                    g.Dispose();
                    p.Dispose();
                    Graphics g1 = this.mainPictureBox.CreateGraphics();
                    g1.DrawImage(dest, new Point(0, 0));
                    g1.Dispose();
                    dest.Dispose();
                    sealButton.Enabled = false;
                    Confirm.Enabled = true;
                }
            }
        }

public void Dispose()
        {
            Image?.Dispose();
        }

public static Image DrawBoxes(AnnotationImage image)
        {
            try
            {
                var originalBitmap = new Bitmap(image.ImagePath);

                var newImageSize = new Size(originalBitmap.Width, originalBitmap.Height);
                if (originalBitmap.Width > ImageSize.Width)
                {
                    newImageSize.Height = (int)(originalBitmap.Height * (ImageSize.Width / (double)originalBitmap.Width));
                    newImageSize.Width = ImageSize.Width;
                }
                if (originalBitmap.Height > ImageSize.Height)
                {
                    newImageSize.Width = (int)(originalBitmap.Width * (ImageSize.Height / (double)originalBitmap.Height));
                    newImageSize.Height = ImageSize.Height;
                }

                var resizedBitmap = new Bitmap(originalBitmap, newImageSize);
                foreach (var id in originalBitmap.PropertyIdList)
                {
                    resizedBitmap.SetPropertyItem(originalBitmap.GetPropertyItem(id));
                }
  
                originalBitmap.Dispose();

                return resizedBitmap;
            }
            catch (Exception exception)
            {
                var bitmap = new Bitmap(ImageSize.Width, ImageSize.Height);
                using (var graphics = Graphics.FromImage(bitmap))
                {
                    graphics.Clear(Color.White);
                    graphics.DrawString(exception.Message, new Font("Arial", 12), Brushes.Black, 50, 50);
                }

                return bitmap;
            }
        }

private void RenderImage()
        {
            if (m_Image != null)
            {
                m_Image.Dispose();
                m_Image = null;
            }

            int iWidth = ClientSize.Width;
            int iHeight = ClientSize.Height;

            if (iWidth > 0 && iHeight > 0 && m_View != null && m_View.Lines != null)
            {
                //Draw a bitmap in memory that we can render from
                m_Image = new Bitmap(iWidth, iHeight);
                Graphics G = Graphics.FromImage(m_Image);

                SolidBrush B = new SolidBrush(BackColor);
                G.FillRectangle(B, 0, 0, iWidth, iHeight);

                const float c_fGutter = 2.0F;
                //Make sure each line is at least 1 pixel high
                float fLineHeight = (float)Math.Max(1.0, GetPixelLineHeightF(1));
                DiffViewLines Lines = m_View.Lines;
                int iNumLines = Lines.Count;
                for (int i = 0; i < iNumLines; i++)
                {
                    DiffViewLine L = Lines[i];
                    if (L.Edited)
                    {
                        B.Color = DiffOptions.GetColorForEditType(L.EditType);
                        float fY = GetPixelLineHeightF(i);
                        G.FillRectangle(B, c_fGutter, fY, iWidth - 2 * c_fGutter, fLineHeight);
                    }
                }

                B.Dispose();
                G.Dispose();
            }
        }

private void SetStateList()
        {
            if (_stateImageList == null)
                return;

            if (_realStateImageList != null)
            {
                _realStateImageList.Dispose();
                _realStateImageList = null;
            }

            _realStateImageList = new ImageList();
            _realStateImageList.ImageSize = _stateImageList.ImageSize;
            
            if (_stateImageList.Images.Count > 0)
            {
                Image[] list = new Image[_stateImageList.Images.Count+1];
                int n = 0;
                list[n++] = _stateImageList.Images[0];

                foreach(Image i in _stateImageList.Images)
                    list[n++] = i;

                _realStateImageList.Images.AddRange(list);

                NativeMethods.SendMessage(Handle, 0x1109, (IntPtr)2, _realStateImageList.Handle);

                n = 0;
                foreach(Image i in list)
                {
                    if(n++ > 0)
                        i.Dispose(); // Release temporary bitmaps
                }
            }
        }

public static void Snip()
        {
            if (IsCapturing)
                return;

            if (Bitmap != null)
            {
                Bitmap.Dispose();
                GC.Collect();
            }
            IsCapturing = true;

            var screens = ScreenHelper.GetMonitorsInfo();
            forms = new SnippingTool[screens.Count];
            for (int i = 0; i < screens.Count; i++)
            {
                int horResolution = screens[i].HorizontalResolution;
                int verResolution = screens[i].VerticalResolution;
                int top = screens[i].MonitorArea.Top;
                int left = screens[i].MonitorArea.Left;
                var bitmap = new Bitmap(horResolution, verResolution, PixelFormat.Format32bppPArgb);
                using (var g = Graphics.FromImage(bitmap))
                {
                    g.CopyFromScreen(left, top, 0, 0, bitmap.Size);
                }
                forms[i] = new SnippingTool(bitmap, left, top, horResolution, verResolution);
                forms[i].Show();
            }
        }

public static void CancelSnipping()
        {
            if (Bitmap != null)
            {
                Bitmap.Dispose();
                GC.Collect();
            }

            Bitmap = null;
            CloseForms();
            OnCancel(new EventArgs());
        }

protected override void Dispose(bool disposing)
		{
			if(tabsimage != null)
			{
				tabsimage.Dispose();
				tabsimage = null;
			}
			
			base.Dispose(disposing);
		}

protected unsafe void RedrawTabs()
		{
			// Determine length and width in pixels
			int tabslength = 0;
			for(int i = 0; i < this.TabPages.Count; i++)
			{
				Rectangle r = this.GetTabRect(i);
				tabslength += r.Height;
			}
			tabslength += 4;
			int tabswidth = this.ItemSize.Height + 2;
			
			// Dispose old image
			if(tabsimage != null)
			{
				tabsimage.Dispose();
				tabsimage = null;
			}
			
			if(VisualStyleInformation.IsSupportedByOS && VisualStyleInformation.IsEnabledByUser)
			{
				StringFormat drawformat = new StringFormat();
				drawformat.Alignment = StringAlignment.Center;
				drawformat.HotkeyPrefix = HotkeyPrefix.None;
				drawformat.LineAlignment = StringAlignment.Center;
				
				// Create images
				tabsimage = new Bitmap(tabswidth, tabslength, PixelFormat.Format32bppArgb);
				Bitmap drawimage = new Bitmap(tabslength, tabswidth, PixelFormat.Format32bppArgb);
				Graphics g = Graphics.FromImage(drawimage);
				
				// Render the tabs (backwards when right-aligned)
				int posoffset = 0;
				int selectedposoffset = -1;
				int start = (this.Alignment == TabAlignment.Left) ? 0 : (this.TabPages.Count - 1);
				int end = (this.Alignment == TabAlignment.Left) ? this.TabPages.Count : -1;
				int step = (this.Alignment == TabAlignment.Left) ? 1 : -1;
				for(int i = start; i != end; i += step)
				{
					VisualStyleRenderer renderer;
					Rectangle tr = this.GetTabRect(i);
					
					// Tab selected?
					if(i == this.SelectedIndex)
					{
						// We will draw this later
						selectedposoffset = posoffset;
					}
					else
					{
						if(i == highlighttab)
							renderer = new VisualStyleRenderer(VisualStyleElement.Tab.TabItem.Hot);
						else
							renderer = new VisualStyleRenderer(VisualStyleElement.Tab.TabItem.Normal);
						
						// Draw tab
						Rectangle r = new Rectangle(posoffset + 2, 2, tr.Height, tr.Width - 2);
						renderer.DrawBackground(g, r);
						g.DrawString(this.TabPages[i].Text, this.Font, SystemBrushes.ControlText, new RectangleF(r.Location, r.Size), drawformat);
					}
					
					posoffset += tr.Height;
				}
				
				// Render the selected tab, because it is slightly larger and overlapping the others
				if(selectedposoffset > -1)
				{
					VisualStyleRenderer renderer = new VisualStyleRenderer(VisualStyleElement.Tab.TabItem.Pressed);
					Rectangle tr = this.GetTabRect(this.SelectedIndex);
					Rectangle r = new Rectangle(selectedposoffset, 0, tr.Height + 4, tr.Width);
					renderer.DrawBackground(g, r);
					g.DrawString(this.TabPages[this.SelectedIndex].Text, this.Font, SystemBrushes.ControlText, new RectangleF(r.X, r.Y, r.Width, r.Height - 2), drawformat);
				}
				
				// Rotate the image and copy to tabsimage
				BitmapData drawndata = drawimage.LockBits(new Rectangle(0, 0, drawimage.Size.Width, drawimage.Size.Height), ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
				BitmapData targetdata = tabsimage.LockBits(new Rectangle(0, 0, tabsimage.Size.Width, tabsimage.Size.Height), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
				int* dd = (int*)drawndata.Scan0.ToPointer();
				int* td = (int*)targetdata.Scan0.ToPointer();
				if(this.Alignment == TabAlignment.Right)
				{
					for(int y = 0; y < drawndata.Height; y++)
					{
						for(int x = 0; x < drawndata.Width; x++)
						{
							td[(drawndata.Width - 1 - x) * targetdata.Width + y] = *dd;
							dd++;
						}
					}
				}
				else
				{
					for(int y = 0; y < drawndata.Height; y++)
					{
						for(int x = 0; x < drawndata.Width; x++)
						{
							td[x * targetdata.Width + (drawndata.Height - 1 - y)] = *dd;
							dd++;
						}
					}
				}
				drawimage.UnlockBits(drawndata);
				tabsimage.UnlockBits(targetdata);
				
				// Clean up
				g.Dispose();
				drawimage.Dispose();
			}
		}

private void ShowPreview(Image image)
		{
			// Dispose old image
			preview.BackgroundImage = null;
			if(bmp != null)
			{
				bmp.Dispose();
				bmp = null;
			}
			
			if(image != null)
			{
				// Show it centered
				General.DisplayZoomedImage(preview, image);
				preview.Refresh();
			}
		}