Accessing C++ code(unmanaged & if possible, managed as well) in C#

I want to write a managed C++ class that I can then access in C# code.  The C++ class will contain unmanaged code as well.  The C++ class has to keep things in memory as well.  It's a class that deals with image manipulation, so I gotta keep a USHORT* in memory (it has to be this type or some other type that easily converts into USHORT* because we use 3rd party code for image enhancement and it requires USHORT*). So, it has to be something that can be long-lived.  When I use a function that causes the buffer to change and then use another function to access that buffer later on, i want to access the newly changed one, not a new instance.  I've tried creating an MFC DLL and just started trying to create a C++ Class library instead.  I can't get anything to work.  Can anybody give me any pointers on how to deal with this? I"ve never done cross-platform stuff before AND its also my first time working in C#.  Any help would be appreciated.  Any websites or examples you could point me towards would also be appreciated.
raw_enhaAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

AlexNekCommented:
0
AlexFMCommented:
You need to create C++/CLI Class Library. Class exported from this library has pure .NET interface and can be accessed from any .NET language. Internally clas can allocate unmanaged resources.
C++/CLI allows to write mixed managed/unmanaged code, this technology sometimes called IJW (It Just Work). To use unmanaged code in C++/CLI project, you only need to include required h-files, add .lib files if necessary, and call unmanaged code directly.
I don't suggest you to use PInvoke because C++/CLI is much beter for interoperability.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
.NET Programming

From novice to tech pro — start learning today.