如何在MFC扩展DLL中导出类
........................\Demo
........................\....\Demo.cpp
........................\....\Demo.dsp
........................\....\Demo.dsw
........................\....\Demo.h
........................\....\Demo.plg
........................\....\Demo.rc
........................\....\DemoDlg.cpp
........................\....\DemoDlg.h
........................\....\ExtClass.h
........................\....\ReadMe.txt
........................\....\res
........................\....\Resource.h
........................\....\res\Demo.ico
........................\....\...\Demo.rc2
........................\....\StdAfx.cpp
........................\....\StdAfx.h
........................\....\Test.dll
........................\....\Test.lib
........................\Test
........................\....\ExtClass.cpp
........................\....\ExtClass.h
........................\....\ReadMe.txt
........................\....\res
........................\....\Resource.h
........................\....\res\Test.rc2
........................\....\StdAfx.cpp
........................\....\StdAfx.h
........................\....\Test.cpp
........................\....\Test.def
........................\....\Test.dsp
........................\....\Test.dsw
........................\....\Test.plg
........................\....\Test.rc