IPin::QueryPinInfo

  • 项目

This method retrieves information about the pin.

HRESULT QueryPinInfo(
  PIN_INFO* pInfo
);

Parameters

  • pInfo
    [out] Pointer to a PIN_INFO structure that specifies the name of the pin, a pointer to an IBaseFilter interface on its owning filter, and the direction of the pin.

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

Unlike the pin name in the IPin::QueryId method, which is used by the filter graph manager, the name in the PIN_INFO structure is intended to be read by users.

On return, the pFilter member of PIN_INFO has an outstanding reference count if it is non-NULL, and therefore should be released when the interface is no longer needed.

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

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