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....此示例使用Graphics类在图像表面绘制字符串。 添加水印 为了演示操作,我...为了演示操作,我们将从磁盘加载BMP图像,并使用Graphics类的DrawString方法在图像表面绘制字符串作为水印。我们将使用Pn...