截图,保存图片，上传图片，放大缩小图片，保存不同类型文件-Screenshot, save pictures, upload pictures, zoom picture

手写签名,将签名的轨迹转为XML存储, 也可以将签名保存为图片.-Handwritten signature, the signature trajectory into XML storage, you can also save the signature as a picture.

使用flex实现的图片查看器，能够缩放图片；显示图片实际大小、最适合大小；保存图片。-Implemented using flex picture viewer can zoom pictures show pictures actual size, the most suitable size save the image.