Contains an IMFFieldOfUseMFTUnlock pointer, which can be used to unlock a Media Foundation transform (MFT). The IMFFieldOfUseMFTUnlock interface is used to unlock an MFT that has field-of-use restrictions.
*** stored as **IUnknown*
DECLSPEC_SELECTANY GUID MFT_FIELDOFUSE_UNLOCK_Attribute = {0x8ec2e9fd,0x9148,0x410d,{0x83,0x1e,0x70,0x24,0x39,0x46,0x1a,0x8e} }
To get this attribute, call IMFAttributes::GetUnknown
To set this attribute, call IMFAttributes::SetUnknown
For more information about this attribute, see Field of Use Restrictions.
The GUID constant for this attribute is exported from mfuuid.lib.
Header: Declared in mftransform.h.