IPin::QueryDirection

Windows CE .NET

This method retrieves the direction for this pin.

HRESULT QueryDirection(
  PIN_DIRECTION* pPinDir
);

Parameters

pPinDir
[out] Pointer to a PIN_DIRECTION variable.

Return Values

Returns an HRESULT value that depends on the implementation. HRESULT can be one of the following standard constants, or other values not listed.

Value Description
E_FAIL Failure.
E_POINTER Null pointer argument.
E_INVALIDARG Invalid argument.
E_NOTIMPL Method is not supported.
S_OK or NOERROR Success.

Remarks

The returned pPinDir parameter will contain PINDIR_INPUT if the pin is an input pin or PINDIR_OUTPUT otherwise. The same information is available by using IPin::QueryPinInfo, but this method is more direct and more efficient.

Requirements

DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.

OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.

See Also

IPin Interface


Last updated on Wednesday, April 13, 2005

© 2005 Microsoft Corporation. All rights reserved.

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