ISpRecoGrammar::LoadCmdFromMemory
ISpRecoGrammar::LoadCmdFromMemory loads a compiled CFG binary from memory.
HRESULT LoadCmdFromMemory(
const SPBINARYGRAMMAR *pBinaryData,
SPLOADOPTIONS Options
);
Parameters
- pBinaryData
- [in] The serialized header buffer of type SPBINARYGRAMMAR.
- Options
- [in] Flag of type SPLOADOPTIONS indicating whether the file should be loaded statically or dynamically.
Remarks
When an application calls ::LoadCmdFromMemory, the currently loaded CFG or proprietary grammar will be unloaded.
Return values
| Value | Description |
|---|---|
| S_OK | Function completed successfully. |
| E_INVALIDARG | Either pBinaryData or one of its members is invalid or bad. It may also indicate pBinaryData->FormatId is not SPGDF_ContextFree. Alternatively, Options is neither SPLO_STATIC nor SPLO_DYNAMIC. |
| FAILED(hr) | Appropriate error message. |
Example
The following code snippet illustrates how to use ISpRecoGrammar::LoadCmdFromMemory to serialize the CFG from one SpRecoGrammar object and deserialize it into another SpRecoGrammar object.
// Declare local identifiers:
HRESULT hr = S_OK;
CComPtr<ISpRecoGrammar> cpRecoGrammar;
CComPtr<ISpRecoGrammar> cpReloadedGrammar;
CComPtr<ISpRecoContext> cpRecoContext;
CComPtr<IStream> cpHStream;
HGLOBAL hGrammar;
// Build and use a SpRecoGrammar object...
// Create a Win32 global stream.
hr = ::CreateStreamOnHGlobal(NULL, true, &cpHStream;);
if (SUCCEEDED(hr))
{
// Save the current grammar to the global stream.
hr = cpRecoGrammar->SaveCmd(cpHStream, NULL);
}
if (SUCCEEDED(hr))
{
// Create the second grammar to deserialize into.
hr = cpRecoContext->CreateGrammar(0, &cpReloadedGrammar;);
}
if (SUCCEEDED(hr))
{
// Get a handle to the stream with the serialized grammar.
::GetHGlobalFromStream(cpHStream, &hGrammar;);
}
// Deserialize the CFG into a new grammar object.
hr = cpReloadedGrammar->LoadCmdFromMemory((SPBINARYGRAMMAR *)::GlobalLock(hGrammar), SPLO_DYNAMIC);
if (SUCCEEDED(hr))
{
// Do stuff here.
}