mf-event-source-topology-canceled-attribute.md

description	ms.assetid	title	ms.topic	ms.date
Specifies whether the Sequencer Source canceled a topology.	b7252336-1612-43fc-8f08-1fdfdbb293eb	MF_EVENT_SOURCE_TOPOLOGY_CANCELED attribute (Mfapi.h)	reference	05/31/2018

MF_EVENT_SOURCE_TOPOLOGY_CANCELED attribute

Specifies whether the Sequencer Source canceled a topology.

Data type

UINT32

Treat as a Boolean value.

Remarks

This attribute is used with the following events:

• MEEndOfPresentationSegment
• MEEndOfPresentation

If this attribute is present and nonzero, it means that the presentation segment ended because the sequencer source canceled the topology. Otherwise, the presentation segment ended normally.

The GUID constant for this attribute is exported from mfuuid.lib.

Requirements

Requirement	Value
Minimum supported client	Windows Vista [desktop apps only]
Minimum supported server	Windows Server 2008 [desktop apps only]
Header	Mfapi.h

See also

Alphabetical List of Media Foundation Attributes

Event Attributes

IMFAttributes::GetUINT32

IMFAttributes::SetUINT32

Sequencer Source Events