该函数主要实现EAN13码相关算法以及转化为二进制字符串.和通过二进制字符生成EAN13 BMP条码图片.在WIN下DEV-C++ 5编译通过.-EAN13 realize the function of the main code-correlation algorithm and converted into a binary string. And through binary characters generated barcode EAN13 BMP picture. In WIN u