OpenGL how gl screen coordinate conversion to three-dimensional coordinates glUnProject

Packet : 53607906coor1.rar filelist
Coor1\BaseCheck.cpp
Coor1\BaseCheck.h
Coor1\BoxCheck.cpp
Coor1\BoxCheck.h
Coor1\Check.h
Coor1\Coor.cpp
Coor1\Coor.dsp
Coor1\Coor.dsw
Coor1\Coor.plg
Coor1\DataDeclare.h
Coor1\PlaneCheck.cpp
Coor1\PlaneCheck.h
Coor1\ReadMe.txt
Coor1\StdAfx.cpp
Coor1\StdAfx.h
Coor1

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