Use_DRM
[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 It has been superseded by Source Reader and Sink Writer.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 Use_DRM attribute instructs the writer object to apply DRM version 1 protection to the current file.
Global Constant
g_wszWMUse_DRM
Data Type
WMT_TYPE_BOOL
Remarks
Use IWMHeaderInfo::SetAttribute to set this property to TRUE when creating DRM version 1 content. This property is not accessible from the reader object.
See also