C++ MFC消息映射机制的剖析实例源代码，讲述如何运用ClassWizard，，理解发送给窗口的消息是如何被MFC框架通过窗口句柄映射表和消息映射表 -C++ MFC message mapping mechanism analysis of source code examples on how to use ClassWizard to understand the message is sent to the window how the MFC fr a mework through