IWMDRMLicenseManagement::MonitorLicenseAcquisition method

[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 It has been superseded by Source Reader and Sink Writer.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.]

The MonitorLicenseAcquisition method initiates monitoring for a license acquisition process.


HRESULT MonitorLicenseAcquisition(
  [in]  BSTR     bstrKID,
  [in]  BSTR     bstrHeader,
  [in]  BSTR     bstrActions,
  [out] IUnknown **ppunkCancelationCookie


bstrKID [in]

Key ID (KID) of the license being acquired.

bstrHeader [in]

Content header that was used in the call to the AcquireLicense method.

bstrActions [in]

String containing the actions requested in the call to the AcquireLicense method.

ppunkCancelationCookie [out]

Pointer that receives a pointer to the IUnknown interface of an object that identifies this asynchronous call. This interface pointer can be used to cancel the asynchronous call by calling the IWMDRMEventGenerator::CancelAsyncOperation method.

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.




Requirement Value

See also

IWMDRMLicenseManagement Interface