7.如何使用工作线程？
....................\MainFrm.cpp
....................\MainFrm.h
....................\ReadMe.txt
....................\res

....................\...\Test.manifest
....................\...\Test.rc2


....................\Resource.h
....................\stdafx.cpp
....................\stdafx.h
....................\Test.cpp
....................\Test.h
....................\Test.ncb
....................\Test.rc
....................\Test.sln
....................\Test.suo
....................\Test.vcproj
....................\TestDoc.cpp
....................\TestDoc.h
....................\TestView.cpp
....................\TestView.h