Chapt_18
........\Chapt_18.dsw
........\ddbasic
........\.......\ddbasic.cpp
........\.......\ddbasic.dsp
........\.......\ddbasic.rc
........\.......\resource.h
........\DemoD3D
........\.......\DemoD3D.cpp
........\.......\DemoD3D.dsp
........\.......\DemoD3D.rc
........\.......\resource.h
........\DemoDD
........\......\DemoDD.cpp
........\......\DemoDD.dsp
........\......\DemoDD.rc
........\......\resource.h