一种画线的MFC程序，非常完整的讲述了类的创建方法，讲解了动态数组的使用以及文件的保存与打开。对初学者理解MFC机制及面向对象的方法非常有益-A painted line MFC program, very complete story of the creation of categories of methods, explained the use of dynamic arrays, as well as conservation and open documents. MFC for