val t : t Ctypes.structure Ctypes_static.typval value : (int, t Ctypes.structure) Ctypes_static.fieldval offset_x : (int, t Ctypes.structure) Ctypes_static.fieldval offset_y : (int, t Ctypes.structure) Ctypes_static.fieldval advance_x : (int, t Ctypes.structure) Ctypes_static.fieldval image : (Image.t Ctypes.structure, t Ctypes.structure) Ctypes_static.field