I'm trying to get this library set-up so that I can initialize a rather complex menu structure in a separate file. How can I do this? It doesn't seem possible that I can return nav:

MenuConfig.cpp

Menu::navRoot CreateMenu()
{
 // create menu structure
 NAVROOT(nav, mainMenu, MAX_DEPTH, in, out);
 return nav;
}

main.cpp

Menu::navRoot nav = CreateMenu();
void setup(void) 
{
 // set up Serial, etc.
}
void loop(void)
{
 nav.poll();
}

I've tried several ways, like passing references, etc. The program seems to crash in the loop.

Is there a way to do this or do am I forced to have a gigantic main.cpp file?!