OPENCV to use the USB camera, use the cvCaptureFromCAM (-1) function, select the default first camera as an input, the same time, the video track OPENCV experiments were carried out.

OpencvUIDlg2.1
..............\1.bmp
..............\2.bmp
..............\3.bmp
..............\arrow.ani
..............\cross_i.cur
..............\Debug
..............\hcross.cur
..............\lcross.cur
..............\OpencvUIDlg.aps
..............\OpencvUIDlg.clw
..............\OpencvUIDlg.cpp
..............\OpencvUIDlg.dsp
..............\OpencvUIDlg.dsw
..............\OpencvUIDlg.h
..............\OpencvUIDlg.opt
..............\OpencvUIDlg.plg
..............\OpencvUIDlg.positions
..............\OpencvUIDlg.rc
..............\OpencvUIDlg.sln
..............\OpencvUIDlg.suo
..............\OpencvUIDlg.vcproj
..............\OpencvUIDlg.vcproj.CHINA-2DAFD5979.Administrator.user
..............\OpencvUIDlgDlg.cpp
..............\OpencvUIDlgDlg.h
..............\ReadMe.txt
..............\Release
..............\res
..............\...\blank.bmp
..............\...\OpencvUIDlg.ico
..............\...\OpencvUIDlg.rc2
..............\Resource.h
..............\StdAfx.cpp
..............\StdAfx.h

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