Interaction MATLAB-C++ and toolboxes

Hi there, Sorry if this is a newbie question but I'd like to get my ideas straight before start doing what I want to.

I understand there's a way to use MATLAB code in C++ (i.e. calling it from C++). But my questions are:

- I have a bunch of functions all of which called by a script, is possible to call such script and retrieve the output. I can also wrap the script around another functions, but still, can I call a function that call another function (and so forth) even if those are in different files?

- I am in extreme needs of the image toolbox in my functions. Is this possible in the moment I call the code from C++?

- In which format I can obtain the output. Can I just map a MATLAB matrix in a C++ matrix?

- Can I pass the code an Image from C++ as a unsigned char matrix?

I understand there may be a documentation out there about this, but I found very fragmented sources, can you in case link me to a good one?

Thank you very much