autocad文件的操作接口，可以调用dll动态库，接口丰富稳定。

pdf417 D语言源码，包括编码解码，解码有一定抗扫描性，封装后的dll可很方便地在其他开发语言中调用。,pdf417 D language source code, including coding, decoding of a certain anti-scanning, after the dll package can be easily developed in other languages call.

调用Windows纸牌游戏的DLL进行纸牌绘制。可以从写出自己喜欢的纸牌小游戏。-Draw Cards with calling Windows Card game s DLL. You can do somg little funny card games by yourself.