| Constant | Definition |
| IME_SMODE_AUTOMATIC | The IME carries out conversion processing in automatic mode. |
| IME_SMODE_NONE | No information for sentence. |
| IME_SMODE_PHRASEPREDICT | The IME uses phrase information to predict the next character. |
| IME_SMODE_PLURALCLAUSE | The IME uses plural clause information to carry out conversion processing. |
| IME_SMODE_SINGLECONVERT | The IME carries out conversion processing in single character mode. |
Bits 16 through 31 are reserved for IME use.