| Constant | Description |
| IME_SMODE_AUTOMATIC | IME carries out the conversion in automatic mode. |
| IME_SMODE_NONE | No sentence information. |
| IME_SMODE_PHRASEPREDICT | IME uses phrase information to predict the conversion for the next character. |
| IME_SMODE_PLURALCLAUSE | IME uses plural clause information to carry out the conversion. |
| IME_SMODE_SINGLECONVERT | IME carries out the conversion in single-character mode. |