Microsoft Speech SDK
SAPI 5.1
ISpSREngineSite::IsAlternate
ISpSREngineSite::IsAlternate determines whether one rule is an alternate of another.
HRESULT IsAlternate(
SPRULEHANDLE hPriRule,
SPRULEHANDLE hAltRule
);
Parameters
- hPriRule
- [in] The primary rule.
- hAltRule
- [in] The alternate rule to be checked.
Return values
| Value | Description |
|---|---|
| S_OK | hAltRule is an alternate of hPriRule. |
| S_FALSE | hAltRule is not an alternate of hPriRule. |
| FAILED (hr) | Appropriate error message. |
Remarks
This method is used because it is not possible to return alternates for CFG rules from different recognition contexts. This method provides an easy way for engines to determine whether two rules belong to the same context.