csource-findpinnumber.md

description	ms.assetid	title	ms.topic	ms.date	topic_type	api_name	api_type	api_location	ms.custom
The FindPinNumber method retrieves the number of a specified pin on the filter.	c9366fcc-7b13-4e43-883e-6003c32fadec	CSource.FindPinNumber method (Source.h)	reference	4/26/2023	APIRef kbSyntax	CSource.FindPinNumber	COM	Strmbase.lib Strmbase.dll Strmbasd.lib Strmbasd.dll	UpdateFrequency5

CSource.FindPinNumber 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 FindPinNumber method retrieves the number of a specified pin on the filter.

Syntax

int FindPinNumber(
   IPin *iPin
);

Parameters

iPin

Pointer to the pin's IPin interface.

Return value

Returns the pin number, or 1 if the pin is not found on this filter. The first pin is numbered zero.

Requirements

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

See also

CSource Class