|Microsoft DirectX 9.0|
The get_TuneRequest method gets the tune request currently in effect for the Network Provider.
HRESULT get_TuneRequest( ITuneRequest** ppTuneRequest );
[out] Address of an ITuneRequest interface pointer that will be set to the returned object.
When the method is successful, it returns S_OK. Otherwise, it returns an HRESULT error code.
After a tune request is submitted to the Tuner, its Components collection will be filled in. By calling get_TuneRequest after tuning to the program, an application can determine which components are currently available for that program, and then use the IComponent::put_Status method on the Component objects in the collection to activate or inactivate them. This is how an application, for example, changes from an English audio stream to a Spanish audio stream.