IEvalRat Interface
| Microsoft DirectShow 9.0 |
IEvalRat Interface
This topic applies to Windows XP Service Pack 1 or later.
The IEvalRat interface is used to evaluate content ratings carried by a broadcast stream. This interface is exposed by the EvalRat (ratings evaluator) object. The EvalRat object is implemented by third parties.
The Encrypter/Tagger filter and the Decrypter/Detagger filter use this interface. Applications use the interfaces exposed by those filters, but typically do not use the IEvalRat interface.
IID: IID_IEvalRat
In addition to the methods inherited from IDispatch, the IEvalRat interface exposes the following methods.
| Method | Description |
| get_BlockedRatingAttributes | Determines whether content is blocked for a given rating system and rating level. |
| get_BlockUnRated | Indicates whether a program without rating information is blocked. |
| MostRestrictiveRating | Compares two ratings and returns the more restrictive of the two. |
| put_BlockedRatingAttributes | Specifies whether to block content that has a specified rating. |
| put_BlockUnRated | Specifies whether to block a program for which rating information has not been obtained. |
| TestRating | Determines whether a program with the specified rating should be blocked. |
See Also