GCL is an add-on product for our Charting Tools and Real-Time Graphics Tools for Windows. The Graphics Class Libraries for MFC are an extension to MFC, integrating our tools with the Document/View architecture. This libraries includes classes for both the Charting Tools and Real-Time Graphics Tools. It provides a convenient object-oriented interface that significantly reduces the effort needed to program graphics applications. With these libraries you can build graphs that inherit all of the behavior of CWnd, CView, CScrollView, and CFormView classes, including print preview. The full source for the class libraries are included.