CBasePin::TryMediaTypes

A version of this page is also available for

Windows Embedded CE 6.0 R3

4/8/2010

Determines a media type for a pin connection.

Syntax

virtual HRESULT TryMediaTypes(
  IPin* pReceivePin,
  const CMediaType* pmt,
  IEnumMediaTypes* pEnum
);

Parameters

• pReceivePin
  Pointer to the IPin interface of the receiving pin.

• pmt
  Pointer to a returned media type.

• pEnum
  Pointer to an IEnumMediaTypes enumerator interface.

Return Value

Returns an HRESULT value, which can include the following.

Remarks

Given an enumerator, this member function cycles through all media types proposed by the enumerator.

Each type is suggested to the derived pin class and, if acceptable, is tried with the connected pin in a call to the IPin::ReceiveConnection method.

This means that if the owning pin proposes a media type, it is still checked to determine whether it is supported. This is deliberate so that, in simple cases, the enumerator can hold all media types, even if some are not currently available.

This member function is protected.

Requirements