CBasePin.QueryDirection 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 QueryDirection method retrieves the direction of the pin (input or output). This method implements the IPin::QueryDirection method.

Syntax

HRESULT QueryDirection(
   PIN_DIRECTION *pPinDir
);

Parameters

pPinDir

Pointer to a variable that receives a member of the PIN_DIRECTION enumerated type.

Return value

Returns S_OK or E_POINTER.

Requirements

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

See also

CBasePin Class