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CTransformOutputPin.CheckConnect method

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[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 CheckConnect method determines whether a pin connection is suitable.

Syntax

HRESULT CheckConnect(
   IPin *pPin
);

Parameters

pPin

Pointer to the output pin's IPin interface.

Return value

Returns an HRESULT value. Possible values include the following.

Return code Description
S_OK
 Success.
E_UNEXPECTED
 The filter's input pin is not connected.

Remarks

This method overrides the CBaseOutputPin::CheckConnect method. It calls the filter's CTransformFilter::CheckConnect method, which returns S_OK in the base class. The derived class can override the CTransformFilter::CheckConnect method to perform additional checks.

Requirements

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