IWMDRMReader::MonitorLicenseAcquisition 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 It has been superseded by Source Reader and Sink Writer.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.]

[MonitorLicenseAcquisition 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 MonitorLicenseAcquisition method, in nonsilent license acquisition, informs the application when a license has been successfully acquired.

Syntax

HRESULT MonitorLicenseAcquisition();

Return value

If the method succeeds, it returns S_OK. If it fails, it returns an HRESULT error code.

Remarks

This method should be used whenever nonsilent license acquisition has been initiated for DRM version 7 content. It is an asynchronous call that returns immediately. This method creates a thread that periodically checks the local license store to determine when the requested license has been received. To cancel the attempt, call CancelMonitorLicenseAcquisition.

When the license acquisition is completed (whether successful or otherwise), the application is notified through a WMT_LICENSE_ACQUIRE event that is sent to the application's IWMStatusCallback::OnStatus method.

Requirements

See also

Handling License Acquisition Events

IWMDRMReader Interface

IWMDRMReader::CancelMonitorLicenseAcquisition

IWMStatusCallback::OnStatus