SDI模式下动态切换多个视图（窗体）
.................................\MultiView1
.................................\..........\MainFrm.cpp
.................................\..........\MainFrm.h
.................................\..........\MultiView.aps
.................................\..........\MultiView.clw
.................................\..........\MultiView.cpp
.................................\..........\MultiView.dsp
.................................\..........\MultiView.dsw
.................................\..........\MultiView.h
.................................\..........\MultiView.ncb
.................................\..........\MultiView.opt
.................................\..........\MultiView.plg
.................................\..........\MultiView.rc
.................................\..........\MultiViewDoc.cpp
.................................\..........\MultiViewDoc.h
.................................\..........\MultiViewView.cpp
.................................\..........\MultiViewView.h
.................................\..........\ReadMe.txt
.................................\..........\Resource.h
.................................\..........\StdAfx.cpp
.................................\..........\StdAfx.h
.................................\..........\View2.cpp
.................................\..........\View2.h
.................................\..........\View3.cpp
.................................\..........\View3.h
.................................\..........\View4.cpp
.................................\..........\View4.h
.................................\..........\res
.................................\..........\...\MultiView.ico
.................................\..........\...\MultiView.rc2
.................................\..........\...\MultiViewDoc.ico
.................................\..........\...\Toolbar.bmp
.................................\..........\说明.txt