Microsoft Speech Platform

ISpRecoContext::CreateGrammar

ISpRecoContext::CreateGrammar creates an SpRecoGrammar object.

<pre IsFakePre="true" xmlns="http://www.w3.org/1999/xhtml"> <strong>HRESULT CreateGrammar(</strong> <strong> ULONGLONG</strong> <em>ullGrammarId</em>, <a runat="server" href="jj127756(v=msdn.10).md"><strong>ISpRecoGrammar</strong></a> **<em>ppGrammar</em> <strong>);</strong> </pre>

Parameters

• ullGrammarId
  [in] Specifies the grammar identifier. The identifier is used by the application and is not required. This identifier is associated with all result objects from the grammar (see SPPHRASE.ullGrammarID).
• ppGrammar
  [out] Address of a pointer which receives the ISpRecoGrammar object. The application must call IUnknown::Release on the object when finished using it.

Return Values

Example

The following code snippet illustrates the use of ISpRecoContext::CreateGrammar.

`

// Declare local identifiers:
HRESULT	                   hr = S_OK;
CComPtr<ISpRecoContext>    cpRecoContext;
CComPtr<ISpRecoResult>     cpRecoResult;
CComPtr<ISpRecoGrammar>    cpRecoGrammar;
ULONGLONG                  ullGramId = 1;
SPPHRASE                   *pPhrase;
const WCHAR                *MY_CFG_FILENAME = L"Foo.cfg";    // Dummy file name.

// Create a grammar object.
hr = cpRecoContext->CreateGrammar(ullGramId, &cpRecoGrammar;);
if (SUCCEEDED(hr))
{
// Load a cfg from a file (constant points to dummy file name).
hr = cpRecoGrammar->LoadCmdFromFile(MY_CFG_FILENAME, SPLO_STATIC);
}
if (SUCCEEDED(hr))
{
// Activate the top-level rules.
hr = cpRecoGrammar->SetRuleState(NULL, NULL, SPRS_ACTIVE);
}
if (SUCCEEDED(hr))
{
// Get a recognition.
// ...
}
// Get the recognized phrase from the recognition result object.
hr = cpRecoResult->GetPhrase(&pPhrase;);
if (SUCCEEDED(hr))
{
// Check the grammar id of the recognition result.
_ASSERT(GRAM_ID == pPhrase->ullGrammarID);
// Release system resources.
::CoTaskMemFree(&pPhrase;);
}