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.pptx" ) as presentation : #旧幻灯片大小...#旧幻灯片大小 currentHeight = presentation . slide_size . size . height...