dxflib是一个用来读写DXF文件的C++库。当读DXF文件的时候，dxflib分析文件并且调用用户自己定义的函数来添加实体、层、等。

需要注意的是，dxflib并不保存任何实体或者信息。它只是从DXF文件中分析可以识别的实体以及其他的对象。

使用dxflib库读DXF文件并不需要知道所有的DXF格式信息。当然，像实体、属性、层、段等基本概念还是需要了解的。如果是用dxflib库写DXF文件，则需要知道DXF文件是如何组织的。

dxflib完全基于C/C++标准库实现，不依赖任何其他的库(Dxflib is a C++ library used to read and write DXF files. When reading a DXF file, dxflib analyzes the file and calls the function defined by the user to add entities, layers, and so on.

It is important to note that dxflib does not save any entity or information. It only analyzes the identified entities and other objects from the DXF file.

Using the dxflib library to read the DXF file does not need to know all of the DXF format information. Of course, the basic concepts such as entities, attributes, layers, and segments need to be understood. If you write the DXF file with the dxflib library, you need to know how the DXF file is organized.

Dxflib is completely based on the C/C++ standard library and does not depend on any other libraries)