Warp opencv using C++/CLI to a C# console project

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C#

CLI

C++11

OpenCV

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Issue to link c++ opencv project with c# console app.

What I have tried:

I try to develop a wrapper to link a library of c++ class of image processing methods to a c# console project. In the c++ console app one I've create a class with the opencv include in its header

#include "opencv2/opencv.hoo"

all right. When I add an other class and include the library in the header

#include "opencv2/opencv.hoo"

and try to build my wrapper I obtain this error:

error LNK2005: "public: __cdecl cv::MatSize::MatSize(int *)" (??0MatSize@cv@@QEAA@PEAH@Z) giÓ definito in PrototipoInterazioneCore_2.lib(opencv_world412d.dll)

Anyone know the origin of this issue? Sorry, I'm new to CLR and Class Libraries building.

Thanks.