vc++ the left mouse button click the picture to achieve a straight line, double-click the line for the selected state, and the straight line into a dotted line

drawLine
........\051610614
........\.........\051610614.cpp
........\.........\051610614.h

........\.........\051610614.rc
........\.........\051610614.vcproj
........\.........\051610614.vcproj.user10449.sc_admin.user
........\.........\Debug
........\.........\ReadMe.txt
........\.........\Resource.h

........\.........\stdafx.cpp
........\.........\stdafx.h
........\051610614.ncb
........\051610614.sln
........\debug
DrawThread
..........\build
..........\.....\classes
..........\.....\.......\DrawFrame$1.class
..........\.....\.......\DrawFrame$10.class
..........\.....\.......\DrawFrame$11.class
..........\.....\.......\DrawFrame$12.class
..........\.....\.......\DrawFrame$2.class
..........\.....\.......\DrawFrame$3.class
..........\.....\.......\DrawFrame$4.class
..........\.....\.......\DrawFrame$5.class
..........\.....\.......\DrawFrame$6.class
..........\.....\.......\DrawFrame$7.class
..........\.....\.......\DrawFrame$8.class
..........\.....\.......\DrawFrame$9.class
..........\.....\.......\DrawFrame.class
..........\.....\.......\DrawThread.class
..........\build.xml
..........\manifest.mf
..........\nbproject
..........\.........\build-impl.xml
..........\.........\genfiles.properties
..........\.........\private
..........\.........\.......\private.properties
..........\.........\.......\private.xml
..........\.........\project.properties
..........\.........\project.xml

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