An application sends the IMC_SETCONVERSIONMODE message to an IME window to set current conversion mode.
msg = (UINT) WM_IME_CONTROL;
wParam = (WPARAM) IMC_SETCONVERSIONMODE;
lParam = (LPARAM) cMode;
Returns zero if successful, nonzero otherwise.
Windows NT: Requires version 4.0 or later.
Windows: Requires Windows 95 or later.
Windows CE: Unsupported.
Input Method Editor Overview, Input Method Editor Messages