说明：  这段程序是我的一个项目里的一段，原本设计的目的是实现对图片进行个性化手写签名，实现这样的方式有很多，但是由于这个项目是全触摸屏设备使用，没有鼠标和键盘，所以就这样设计了。基本思想是将图片作为背景，然后以手写板的方式直接绘制，然后生成新的图片，呵呵！可能有点小题大作，如果大家有什么别的方式实现，欢迎留言指教，本人虚心学习中。。。
(This procedure is one of my projects section, the original is designed to achieve personalized picture handwritten signature, in such a way to achieve a lot, but as a result of this project is the use of touch-screen device, there is no mouse and keyboard, so This was designed. The basic idea is to picture as a background, and then a hand-written directly drawing board, and then generate a new picture, huh, huh! May be a bit fuss, if we have any other way, welcomed the message advice, I humbly learning. . .)