IWMDRMReader2::SetEvaluateOutputLevelLicenses method (wmsdkidl.h)
[The feature associated with this page, Windows Media Format 11 SDK, is a legacy feature. It has been superseded by Source Reader and Sink Writer. Source Reader and Sink Writer have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader and Sink Writer instead of Windows Media Format 11 SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
[SetEvaluateOutputLevelLicenses is available for use in the operating systems specified in the Requirements section. It may be altered or unavailable in subsequent versions. Instead, use Microsoft PlayReady. ]
The SetEvaluateOutputLevelLicenses method sets the reader to evaluate licenses that use output protection levels (OPLs).
Syntax
HRESULT SetEvaluateOutputLevelLicenses(
[in] BOOL fEvaluate
);
Parameters
[in] fEvaluate
Flag specifying whether to handle files with licenses that use output protection levels.
Return value
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
|---|---|
|
The method succeeded. |
Remarks
If your application supports reading DRM-protected files with licenses that use output protection levels, you must call this method and set fEvaluate to TRUE. The call must be made before opening the file.
When a file is opened with OPL support enabled, you must call either GetCopyOutputLevels or GetPlayOutputLevels, depending on the actions your application performs. These methods provide minimum OPLs for the associated action.
If you do not call this method, the reader object will not open DRM-protected files that have licenses specifying output protection levels.
Requirements
| Minimum supported client | Windows XP [desktop apps only],Windows Media Format 9.5 SDK |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Target Platform | Windows |
| Header | wmsdkidl.h (include Wmsdk.h) |
| Library | WMStubDRM.lib |