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....private void ThisAddIn_Startup ( object sender , System . EventArgs...添加图片框到演示文稿 创建并嵌入 Excel 图表作为 OLE 对象...