nf-strmif-iamstreamselect-count.md

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NF:strmif.IAMStreamSelect.Count	IAMStreamSelect::Count (strmif.h)	The Count method retrieves the number of available streams.	Count Count method [DirectShow] Count method [DirectShow] IAMStreamSelect interface IAMStreamSelect interface [DirectShow] Count method IAMStreamSelect.Count IAMStreamSelect::Count IAMStreamSelectCount dshow.iamstreamselect_count strmif/IAMStreamSelect::Count	dshow\iamstreamselect_count.htm	dshow	5104ce98-5b13-409a-9226-0c089ee8bb1e	4/26/2023	Count, Count method [DirectShow], Count method [DirectShow],IAMStreamSelect interface, IAMStreamSelect interface [DirectShow],Count method, IAMStreamSelect.Count, IAMStreamSelect::Count, IAMStreamSelectCount, dshow.iamstreamselect_count, strmif/IAMStreamSelect::Count	strmif.h	Dshow.h	Windows	Windows 2000 Professional [desktop apps only]	Windows 2000 Server [desktop apps only]										Strmiids.lib			Windows			19H1	IAMStreamSelect::Count strmif/IAMStreamSelect::Count	c++	APIRef kbSyntax	COM	Strmiids.lib Strmiids.dll	IAMStreamSelect.Count

IAMStreamSelect::Count

-description

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 Count method retrieves the number of available streams.

-parameters

-param pcStreams [out]

Receives the number of streams.

-returns

Returns an HRESULT value. Possible values include the following.

Return code	Description
S_OK	Success.
VFW_E_NOT_CONNECTED	The pins are not connected.

-see-also

Error and Success Codes

IAMStreamSelect Interface