VC基础教程 第四章 窗口控件 版权所有 闻怡洋从VC提供的MFC类派生图中我们可以看出窗口的派生关系，派生图，所有的窗口类都是由CWnd派生。所有CWnd的成员函数在其派生类中都可以使用。本节介绍一些常用的功能给大家。 -based VC IV Directory window controls only Wen Yue-yang from the VC MFC category derived map, we window can be seen a derivative, derivative map, all window types are derived from CWnd. CWnd all of its members function in the derived class can be used. This section presents some of the functions commonly used to everyone.