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....实例化表示演示文稿文件的 Presentation 类 Presentation pres = new Presentation ( "ExistingChart...实例化表示演示文稿文件的 Presentation 类 Presentation pres = new Presentation ( "ExistingChart...