Class Libraries & REST APIs for the developers to manipulate & process Files from Word, Excel, PowerPoint, Visio, PDF, CAD & several other categories in Web, Desktop or Mobile apps. Develop & deploy on Windows, Linux, MacOS & Android platforms.... Shapes . AddLine ( 10 , 10 , 100 ...Presentation 类的实例 使用索引获取幻灯片的引用 使用 Shapes 对象提供的 AddAutoShape 方法添加线类型的...