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....将演示文稿文件写入磁盘 presentation -> Save ( u "SetChartSeriesOverla_out...Color :: get_Blue ()); pres -> Save ( u "output.pptx" , SaveFormat...