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如何获得Windows目录和System目录\Demo\Demo.cpp
...............................\....\Demo.dsp
...............................\....\Demo.dsw
...............................\....\Demo.h
...............................\....\Demo.plg
...............................\....\Demo.rc
...............................\....\DemoDlg.cpp
...............................\....\DemoDlg.h
...............................\....\ReadMe.txt
...............................\....\res\Demo.ico
...............................\....\...\Demo.rc2
...............................\....\resource.h
...............................\....\StdAfx.cpp
...............................\....\StdAfx.h
...............................\....\res
...............................\Demo
如何获得Windows目录和System目录