Using C++ libs and headers through a DLL in C#?

[Oscee]

I am trying to write a camera control software - I have some factory provided headers and SDK libraries for the camera (I'm assuming they're from the VS6 era) and the hardware, of course. I would like to call these library functions from C# because the interface and some graph- and image displaying seems to be much more easier to write in C#.

What I was thinking of, I would write a C++ code which basically includes the headers and other stuff and wraps these SDK/lib functions into C++ functions. Then I make a DLL from it and use it in C#.

For instance, the initialization in the C++ part:

int initCam(int param)
{
    return SET_INIT(param);
    //returns with an error code or 0
}

and I call the initCam(argument) function in C# to initialize the camera.

Would this work? I am not sure this is the proper way to call C/C++ libraries from C# and as I tried a couple of things it doesn't seem to be :)

edit:
I hope I posted to the right place, I wasn't sure where to post this question

[tlhintoq]

Google with the terms "Call C++ DLL from C#" yielded several tutorials.
http://www.google.com/search?client=...UTF-8&oe=UTF-8

[alag20]

I agree with tlhintoq, that googling will give you lots of tutorials to explain in detail, but just as a reference for future, incase people come to this page via google, you can accomplish it in the way below.

[DllImport("user32.dll", SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        static extern bool PostMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);
 

This goes to user32.dll which is a windows dll, and returns a boolean, but you will write something similar to tap into your C++ dll with exposed functions. Google for tutorials to explain in detail.