pdnMesh is an automatic mesh generator and solver for Finite Element problems. It will also do post-processing to generate contour plots and Postscr ipt printouts. GUI support using GTK or MFC (Win32) is available. The problem definition can be done

Buffon投针试验，计算圆周率的值.使用MFC完成界面和图形的开发-The application of Buffon Needle Test with GUI by MFC.