IMFMediaEvent interface (mfobjects.h)

Represents an event generated by a Media Foundation object. Use this interface to get information about the event.

To get a pointer to this interface, call IMFMediaEventGenerator::BeginGetEvent or IMFMediaEventGenerator::GetEvent on the event generator.


The IMFMediaEvent interface inherits from IMFAttributes. IMFMediaEvent also has these types of members:


The IMFMediaEvent interface has these methods.


Retrieves the extended type of the event.

Retrieves an HRESULT that specifies the event status.

Retrieves the event type. The event type indicates what happened to trigger the event. It also defines the meaning of the event value.

Retrieves the value associated with the event, if any. The value is retrieved as a PROPVARIANT structure. The actual data type and the meaning of the value depend on the event.


If you are implementing an object that generates events, call the MFCreateMediaEvent function to create a new event object.

This interface is available on the following platforms if the Windows Media Format 11 SDK redistributable components are installed:

  • Windows XP with Service Pack 2 (SP2) and later.
  • Windows XP Media Center Edition 2005 with KB900325 (Windows XP Media Center Edition 2005) and KB925766 (October 2006 Update Rollup for Windows XP Media Center Edition) installed.


Minimum supported client Windows Vista [desktop apps | UWP apps]
Minimum supported server Windows Server 2008 [desktop apps | UWP apps]
Target Platform Windows
Header mfobjects.h (include Mfidl.h)

See also

Event Attributes


Media Event Generators

Media Foundation Interfaces