| Microsoft DirectX 9.0 |
The ITuner interface is implemented on the Microsoft BDA Network Provider filters. It provides methods for passing tune requests down to the hardware device and receiving current tuning settings. Generally, applications should use the derived interface IScanningTuner instead of ITuner.
Note Only applications that are intended to run on Microsoft® Windows® 9.x or Windows 2000 will use this interface. On Windows XP, the Video Control handles all tuning interactions with the Network Provider.
In addition to the methods inherited from IUnknown, the ITuner interface exposes the following methods.
| Method | Description |
| EnumTuningSpaces | Creates a collection of the tuning spaces preferred by this implementation. |
| get_PreferredComponentTypes | Gets the collection of ComponentType objects used for default component selection. |
| get_SignalStrength | Retrieves the Network Provider-specific signal strength metric. |
| get_TuneRequest | Gets the tune request currently in effect for the Network Provider. |
| get_TuningSpace | Gets the tuning space currently in effect for the Network Provider. |
| put_PreferredComponentTypes | Sets the collection of ComponentType objects used for default component selection. |
| put_TuneRequest | Sets the tune request for the Network Provider. |
| put_TuningSpace | Sets the tuning space for the Network Provider. |
| Validate | Returns a value indicating that the tune request can be carried out. |