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....注释的位置 PointF point = new PointF (); point . X = 1 ; point . Y = 1..."你好Zeeshan,这是幻灯片注释" , pres . Slides [ 0 ], point , DateTime . Now ); pres . Save...