IPin::QueryDirection method (strmif.h)

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 gets the direction of the pin (input or output).

Syntax

HRESULT QueryDirection(
  [out] PIN_DIRECTION *pPinDir
);

Parameters

[out] pPinDir

Receives a member of the PIN_DIRECTION enumerated type.

Return value

Returns an HRESULT value. Possible values include the following.

Requirements

See also

Error and Success Codes

IPin Interface