基于SDI的MFC应用程序设计，有工具条、视图分割、树控件、CFromView派生类、状态栏以及视图间的通信，非常全面，适合初学者学习的例程-The MFC-based SDI application design tool, the split view, tree controls, CFromView derived class, status bar, as well as communication between the view, very comprehensive and su

实现CFromView的自动缩放功能，可以自动识别窗口的大小变化而调整控件大小-implement the auto zoom in/out of CFromView in mfc