enum DwgDataType { kDwgNull = 0, kDwgReal = 1, kDwgInt32 = 2, kDwgInt16 = 3, kDwgInt8 = 4, kDwgText = 5, kDwgBChunk = 6, kDwgHandle = 7, kDwgHardOwnershipId = 8, kDwgSoftOwnershipId = 9, kDwgHardPointerId = 10, kDwgSoftPointerId = 11, kDwg3Real = 12, kDwgInt64 = 13, kDwg2Real = 14, kDwgNotRecognized = 19 };