You cannot turn off character Autocomplete after it is set.
HRESULT WINAPI SetCACMode( HRECOCONTEXT hrc, int iMode );
[in] Handle to the recognizer context.
[in] The following table lists the possible character Autocomplete modes.
|Character Autocomplete mode||Description|
|CAC_FULL||Recognition occurs as if all strokes have been completed.|
|CAC_PREFIX||Recognition occurs on partial input. The order of the strokes must conform to the rules of the language.|
|CAC_RANDOM||Recognition occurs on partial input. The order of the strokes can be arbitrary.|
|E_INVALIDARG||The specified mode is invalid.|
|E_NOTIMPL||The recognizer does not support this function.|
|E_FAIL||You must call the SetGuide function before calling this function.|
Some recognizers do not support character Autocomplete. To determine if the recognizer supports character Autocomplete, call the GetRecoAttributes function and check the dwRecoCapabilityFlags member of the RECO_ATTRS structure.