Using dropbox-sdk-dotnet sdk with c++

I have downloaded and built the dropbox-sdk-dotnet sdk.

It looks like the Dropbox.Api.XML file has the "header" information I need, but I do not know how to use this with an existing c++ app I will call myApp.

With a managed C app I can use "add an existing project" and add the dropbox-sdk-dotnet project. Then I am able to add a reference under projects solutions. But myApp is not managed C.

What do I need to add to an existing c++ project for it to be able to call into the Dropbox.Api.dll