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.... 创建 Presentation 类的实例。 访问第一张幻灯片。 添加带有默认数据的图表。...将修改后的演示文稿写入 PPTX 文件。 Presentation pres = new Presentation (); try { //...