基于delphi的ACAD二次开发源代码例子，绘制一个空间模型的平面投影。该程序的运行将自动开启ACAD，请务必先安装ACAD，最好是2002版的。-Based on the secondary development of ACAD in delphi source code examples, mapping a space model of planar projection. The operation of the progr

For example, with the standard AutoCAD Type Library import unit that is created by Delphi when you import the type library, you must refer to elements in a SelectionSet object as follows: -For example, with the