IEnumStreamIdMap::Next method (strmif.h)

Article
02/22/2024

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 Next method retrieves the next n elements in the collection.

Syntax

HRESULT Next(
  [in]      ULONG         cRequest,
  [in, out] STREAM_ID_MAP *pStreamIdMap,
  [out]     ULONG         *pcReceived
);

Parameters

[in] cRequest

The number of elements to retrieve.

[in, out] pStreamIdMap

Address of a user-allocated array containing cRequest elements that will receive the retrieved STREAM_ID_MAP structures.

[out] pcReceived

Receives the number of elements actually retrieved.

Return value

Returns S_OK if successful. If the method fails,an HRESULT error code is returned.

Remarks

If cRequest >= 0 and pcReceived is not NULL, upon return pcReceived contains the number of stream ID maps remaining in the collection.

Requirements

Requirement	Value
Minimum supported client	Windows XP [desktop apps only]
Minimum supported server	Windows Server 2003 [desktop apps only]
Target Platform	Windows
Header	strmif.h (include Dshow.h)
Library	Strmiids.lib

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