qr_code，生成二维码，有打印功能。-vb qr_code,source code,include print

V利用Printer对象直接打印数据库中的数据(使用VB编程工具）。操作简单，代码有很强的扩展性和通用性。-Direct Printing with Printer object data.Simple operation, code has strong scalability and versatility.

Some code in C++Builder 6.0 manner. You can calc a spline(hermite, cubic, and so on) for sequence of vertexes.