stdafx啊.h

《深入浅出MFC》上的源代码。虽然.NET出现了

// stdafx.h : include file for standard system include files,
// or project specific include files that are used frequently,
// but are changed infrequently

#include <afxwin.h>   // MFC core and standard components

//如果去掉的话，就是readoonly