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.... SlidePart slide = ( SlidePart ) part . GetPartById...GetPartById ( relId ); if ( slide != null ) { // 获取包含要更改的形状的形状树。...