一个二维码、条形码打印程序。打印机为台半条形打印机。从数据库中读取数据，然后生成条形码、二维码，然后打印条形码、二维码。-A bar code, a two-dimensional code printing program. Extract data the , generate two-dimensional code, bar code, and then print two-dimensional code, bar code. The printer is TSC G310。