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.... Shape shp = sld . Shapes . AddTextbox ( Microsoft...//为了添加它,我们将首先添加一个矩形 Shape shp = sld . Shapes . AddRectangle ( 1200...