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....要向选定的演示文稿幻灯片添加简单矩形,请按照以下步骤操作: 创建一个 Presentation 类的实例。 使用索引获取幻灯片的引用。 使用 IShapeCollection...实例化表示PPTX的Presentation类 Presentation pres = new Presentation (); try...