楼梯模型，可旋转，现况模式
..........................\ChildFrm.cpp
..........................\ChildFrm.h
..........................\DataDialog.cpp
..........................\DataDialog.h
..........................\Light.aps
..........................\Light.clw
..........................\Light.cpp
..........................\Light.dsp
..........................\Light.dsw
..........................\Light.h
..........................\Light.ncb
..........................\Light.opt
..........................\Light.plg
..........................\Light.rc
..........................\LightDoc.cpp
..........................\LightDoc.h
..........................\LightView.cpp
..........................\LightView.h
..........................\MainFrm.cpp
..........................\MainFrm.h
..........................\ReadMe.txt
..........................\res
..........................\resource.h
..........................\...\Light.ico
..........................\...\Light.rc2
..........................\...\LightDoc.ico
..........................\...\Toolbar.bmp
..........................\StdAfx.cpp
..........................\StdAfx.h