Hello,

To access a haskell type from C code, do we have to make this type instance of Storable (and so to also define an homomorph structure on the C side), or does FFI specifies some C function to enable C code to access the fields, or even some GHC-specific functions? (Even if I'd prefer a portable way)

I mean, if I have the type:

data Character = Character {
    pos :: (Float, Float),
    size :: Float,
    sprite :: Image
}

Do I compulsorily have to double its definition on C side:

stuct CCharacter {
    float x;
    float y;
    float size;
    Image sprite;
}

and then make Character instance of Storable, which will make the program *copy* Characters to CCharacters each time that I must call a C function to, say, draw a character?