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IWMRegisteredDevice::GetAttributeByIndex method (wmsdkidl.h)

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[The feature associated with this page, Windows Media Format 11 SDK, is a legacy feature. It has been superseded by Source Reader and Sink Writer. Source Reader and Sink Writer have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader and Sink Writer instead of Windows Media Format 11 SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The GetAttributeByIndex method retrieves an attribute associated with the device. This method uses the attribute index to specify the attribute to retrieve.

Syntax

HRESULT GetAttributeByIndex(
  [in]  DWORD dwIndex,
  [out] BSTR  *pbstrName,
  [out] BSTR  *pbstrValue
);

Parameters

[in] dwIndex

Attribute index. Valid indexes range from zero to one less than the number of attributes returned by GetAttributeCount.

[out] pbstrName

Address of a variable that receives the attribute name.

[out] pbstrValue

Address of a variable that receives the attribute value.

Return value

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return code Description
S_OK
 The method succeeded.

Requirements

Requirement Value
Minimum supported client Windows XP [desktop apps only],Windows Media Format 9.5 SDK
Minimum supported server Windows Server 2003 [desktop apps only]
Target Platform Windows
Header wmsdkidl.h (include Wmsdk.h)
Library WMStubDRM.lib

See also

IWMRegisteredDevice Interface