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.... Presentation pres = new Presentation ( "HelloWorld...以下示例代码演示了所述操作: Presentation pres = new Presentation ( "source.pptx"...