ISpRecognizer::GetRecoState (SAPI 5.3)

Speech API 5.3
Microsoft Speech API 5.3


ISpRecognizer::GetRecoState retrieves the current state of the recognition engine.

HRESULT GetRecoState(
   SPRECOSTATE   *pState


[out] One of the input state flags contained in the SPRECOSTATE enumeration.

Return values

S_OKFunction completed successfully.
E_INVALIDARGInvalid pointer.
FAILED(hr)Appropriate error message.


This method determines whether audio is currently being read from the audio input stream and passed to the SR engine.

See also ISpRecognizer::SetRecoState

The default recognizer state is SPRST_ACTIVE, which means SAPI will activate the audio input stream only when at least one top-level rule is active.

To be notified when the recognizer state changes (e.g. another application changes the shared SR engine's recognizer state), rather than polling the state with ::GetRecoState, call ISpEventSource::SetInterest with SPEI_RECO_STATE