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....为了在现有PDF文档上设置权限,可以使用 Document->Encrypt(…) 方法,该方法需要一个 DocumentPrivilege...