Hi..! I want to use "C++ code doing image-processing using open-CV" in C#. For that i made a wrapper-class library in which i linked some header and body files of my C++ project. i almost got success but when i build the class library for releasing Dll i got this error "error C1001: An internal error has occurred in the compiler". When i doubled click on it it goes to open CV file "mat.hpp" in the wrapper-class library. I want to solve this error soon.i did a lot search but still have the same error. Please help me.I shall b very thankful to you. Thanks