from ctypes import *
class Color(Structure):
    _fields_ = [('r', c_uint8)]

class Dice(Structure):
    _fields_=[('nb_dices', c_int),
              ('nb_faces', c_int),
              ('multiplier', c_float),
              ('addsub', c_float),
              ]

class _CValue(Union):
    _fields_=[('c',c_uint8),
              ('i',c_int),
              ('f',c_float),
              ('s',c_char_p),
              ('dice',Dice),
              ('col',Color),
              ('custom',c_void_p),
              ]

def value_converter(value):
    pass

CFUNCTYPE(c_uint, _CValue)(value_converter)