barprint

代码说明：

  用来显示对应数字的条形码。共6种码制，可以选择打印大小，打印位置，也可以打印预览，不过暂时还不具备连接打印机打印功能，这个可以自己添加上去。(Used to display the corresponding bar code numbers. A total of six kinds of system code, you can choose print size and print position, you can print preview, but not yet connected with a printer function, this can add up.)