Microsoft DirectX 8.1 (C++)

ITuneRequestInfo::GetPreviousProgram

The GetPreviousProgram method creates a new tune request with channel or program locator information for the previous service.

Syntax

HRESULT GetPreviousProgram(
  ITuneRequest*  pCurrentRequest,
  ITuneRequest**  ppTuneRequest
);

Parameters

pCurrentRequest

[in] Specifies the current request.

ppTuneRequest

[out] Pointer to a variable that receives a tune request for the previous service in the current transport stream.

Return Values

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return code	Description
S_OK	The method succeeded.
E_POINTER	CurrentRequest is not valid, or TuneRequest is NULL.

Remarks

This method might be used by a custom Guide Store Loader to enumerate the available services on a transport stream.

See Also