VC++设置和获得一组单选按钮的选中状态

....................................\Debug

....................................\.....\Demo.exe

....................................\.....\Demo.ilk

....................................\.....\Demo.obj

....................................\.....\Demo.pch

....................................\.....\Demo.pdb

....................................\.....\Demo.res

....................................\.....\DemoDlg.obj

....................................\.....\StdAfx.obj

....................................\.....\vc60.idb

....................................\.....\vc60.pdb

....................................\Demo.aps

....................................\Demo.cpp

....................................\Demo.dsp

....................................\Demo.dsw

....................................\Demo.h

....................................\Demo.ncb

....................................\Demo.opt

....................................\Demo.plg

....................................\Demo.rc

....................................\DemoDlg.cpp

....................................\DemoDlg.h

....................................\ReadMe.txt

....................................\res

....................................\resource.h

....................................\...\Demo.ico

....................................\...\Demo.rc2

....................................\...\Thumbs.db

....................................\StdAfx.cpp

....................................\StdAfx.h