module HROOT.Class.TArrow.Interface where
import Data.Word
import Foreign.ForeignPtr
import HROOT.TypeCast
import HROOT.Class.TArrow.RawType
import HROOT.Class.TLine.Interface
import HROOT.Class.TAttFill.Interface
class (ITLine a,ITAttFill a) => ITArrow a where
instance Existable TArrow where
data Exist TArrow = forall a. (FPtr a, ITArrow a) => ETArrow a
upcastTArrow :: (FPtr a, ITArrow a) => a -> TArrow
upcastTArrow h = let fh = get_fptr h
fh2 :: ForeignPtr RawTArrow = castForeignPtr fh
in cast_fptr_to_obj fh2