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....要将简单的线条添加到演示文稿的选定幻灯片中,请按照以下步骤操作: 创建一个 Presentation 类的实例。 使用其索引获取幻灯片的引用。 使用...PresentationEx 类 Presentation pres = new Presentation (); try { //...