图片底色更改功能

毕竟我是神经病 · 毕竟我是神经病

好像用你说的方法试过，没有用。可不可以给个具体的例子参照下？

Richard.Ma · Richard.Ma

         RasterImage ri = iv.Image;
         //创建黄色前景图片
         Bitmap b1 = new Bitmap(ri.Width, ri.Height);
         Graphics g1 = Graphics.FromImage(b1);
         g1.FillRectangle(Brushes.Yellow, new Rectangle(0, 0, ri.Width , ri.Height ));
         MemoryStream st = new MemoryStream();
         b1.Save(st, ImageFormat.Jpeg);
         b1.Dispose();
         RasterImage destImage = RasterImageConverter.ConvertFromImage(Image.FromStream(st), ConvertFromImageOptions.None);
         st.Dispose();
         // Combine them
         CombineFastCommand command = new CombineFastCommand();
         command.DestinationRectangle = new LeadRect(0,0,destImage.Width,destImage.Height);
         command.SourcePoint = LeadPoint.Empty;
         command.DestinationImage = destImage;
         command.Flags = CombineFastCommandFlags.OperationAverage;
         command.Run(ri);

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[已处理] 图片底色更改功能

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