PGL是一个库，封装在MFC项目策划能力VC6一…

代码说明：

PGL is a library that encapsulates plot capabilities in a MFC project for VC6 and VC7. It is designed to be able to easily plot data generated in a project without the need of any external software. In fact, with CView and CDialog derived classes, you can have your app display chart in 5 minutes. The aim of PGL is not to have a user-friendly environment but rather being able to generate any plot from the source code. PGL was originally using OpenGL to raster graphics but now it uses GDI+ (so you need to install Microsoft SDK to compile PGL).