IEnumMediaTypes interface (strmif.h)

The IEnumMediaTypes interface enumerates a pin's preferred media types. To obtain this interface, call the IPin::EnumMediaTypes method on the pin. Filters use this interface when they connect to other filters. Applications can also use it to examine a pin's preferred media types. For more information, see Enumerating Objects in a Filter Graph.

This interface implements a standard Component Object Model (COM) collection object.

If a pin's set of preferred media types changes, some methods on this interface return VFW_E_ENUM_OUT_OF_SYNC. Call the IEnumMediaTypes::Reset method to resynchronize the enumerator.


The IEnumMediaTypes interface inherits from the IUnknown interface. IEnumMediaTypes also has these types of members:


The IEnumMediaTypes interface has these methods.


The Clone method makes a copy of the enumerator. The returned object starts with the same enumeration state as the original.

The Next method retrieves a specified number of media types.

The Reset method resets the enumeration sequence to the beginning. (IEnumMediaTypes.Reset)

The Skip method skips over a specified number of media types.


Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Target Platform Windows
Header strmif.h (include Dshow.h)

See also

Enumerating Media Types