CBasePin.QueryId method

[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The QueryId method retrieves the pin identifier. This method implements the IPin::QueryId method.

Syntax

HRESULT QueryId(
   LPWSTR *Id
);

Parameters

Id

Pointer to the pin identifier.

Return value

Returns an HRESULT value. Possible values include those in the following table.

Return code	Description
S_OK	Success.
E_OUTOFMEMORY	Insufficient memory.
E_POINTER	NULL pointer argument.

Remarks

This method returns a copy of the CBasePin::m_pName member variable.

Requirements

Requirement	Value
Header	Amfilter.h (include Streams.h)
Library	Strmbase.lib (retail builds); Strmbasd.lib (debug builds)

See also

CBasePin Class