请认准属性表，一次编写，到处使用，系统环境变量你都不需要设定，所有设定都写在属性表文件中，用的时候在vs里导入属性表。如果要切换opencv版本，只修改opencv编译输出目录就可以了。
比如OpenCV3.0版的，可以命名为opencv300.props：
D:\lib\opencv300\build
$(OpenCVRoot)\include;$(IncludePath)
$(OpenCVRoot)\x86\vc12\lib;$(LibraryPath)
$(OpenCVRoot)\x64\vc12\lib;$(LibraryPath)
$(ProjectDir)
WindowsLocalDebugger
PATH=%PATH%;$(OpenCVRoot)\x86\vc12\bin
PATH=%PATH%;$(OpenCVRoot)\x64\vc12\bin
opencv_ts300d.lib;opencv_world300d.lib;%(AdditionalDependencies)
opencv_ts300.lib;opencv_world300.lib;%(AdditionalDependencies)
