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....pptx" ); try { IAutoShape shape = pres . getSlides (). get_Item... 50 ); shape . addTextFrame ( "要应用拼写检查语言的文本" ); shape . getTextFrame...