description | ms.assetid | title | ms.topic | ms.date |
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Specifies the type of protection mechanism used in an Advanced Systems Format (ASF) file. |
91ceb610-6ff4-4133-beab-6debb94eec2c |
MF_PD_ASF_CONTENTENCRYPTION_TYPE attribute (Wmcontainer.h) |
reference |
05/31/2018 |
Specifies the type of protection mechanism used in an Advanced Systems Format (ASF) file.
Wide-character string
This attribute applies to presentation descriptors for ASF content.
The IMFASFContentInfo::GeneratePresentationDescriptor method retrieves the Protection Type field, converts it into a wide-character string, and then populates a null-terminated array of WCHARs. If present, the value must be "DRM". The size of the array equals the Protection Type Field Length field of the Content Encryption Header.
Requirement | Value |
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Minimum supported client |
Windows Vista [desktop apps only] |
Minimum supported server |
Windows Server 2008 [desktop apps only] |
Header |
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