Public functions in the interface controller

Hi all,

My project includes 3 components. Each component has its own Iview and public functions.

The application will run a main component that uses those 3 components.

What is the right way to call the public functions?

Should I announce them in the interface controller?

Or should I use plugging for doing it?

If I announce them in the interface controller, how I am calling them from the main component?

Thanks,

Noy