用VB.NET开发一个小型交互式CAD系统,包括直线,圆,矩形,文本的实现,还有镜像,平移,放大,缩小等,具备一个小CAD系统的功能.-with VB.NET development of a small interactive CAD system, including linear, circular, rectangular, the realization of the text, image, translation, zoom in and out, with a small CAD

VB.net下，可以读取CAD文件中的特征，然后进行特征进行绘图显示。-VB.net, the CAD files can be read in the feature, and then display the drawing features.