说明：  一个图形信息校验码识别程序，类似很多网站上的验证码功能，可以指定验证码信息类型，如大小写英文，数字，随机混杂等，可以指定验证码长度，指定背景图片，最强的是可以像GG的弯曲不规则文字显示，总之是一个不错的演示程序，记得以前有网友问我要过，这不，找到后马上发了出来。
(A graphical checksum identification procedures, similar to many sites on the verification code function, you can specify validation code the type of information, such as the case of English, numbers, randomly mixed, you can specify to verify that the code length, specify the background image, the strongest can be displayed as GG bending irregular text, in short, is a good demo program, remember that friends asked me to lead, this is not found immediately sent out.)