| description | ms.assetid | title | ms.topic | ms.date |
|---|---|---|---|---|
Contains a caller-defined value for an METransformMarker event. |
c6ab20d9-c2bc-43ba-a018-2c6682bf0485 |
MF_EVENT_MFT_CONTEXT attribute (Mfapi.h) |
reference |
05/31/2018 |
Contains a caller-defined value for an METransformMarker event.
ULONG_PTR stored as UINT64
To get this attribute, call IMFAttributes::GetUINT64.
To set this attribute, call IMFAttributes::SetUINT64.
This attribute is used with the METransformMarker event. The value of the attribute is taken from the ulParam parameter of the IMFTransform::ProcessMessage method.
The GUID constant for this attribute is exported from mfuuid.lib.
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 7 [desktop apps | UWP apps] |
| Minimum supported server |
Windows Server 2008 R2 [desktop apps | UWP apps] |
| Header |
|