IWMSyncReader::GetOutputProps method (wmsdkidl.h)

發行項
4/26/2023

[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 It has been superseded by Source Reader and Sink Writer.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 GetOutputProps method retrieves the current properties of an uncompressed output stream.

Syntax

HRESULT GetOutputProps(
  [in]  DWORD               dwOutputNum,
  [out] IWMOutputMediaProps **ppOutput
);

Parameters

[in] dwOutputNum

DWORD containing the output number.

[out] ppOutput

Pointer to a pointer to an IWMOutputMediaProps interface, which is created by a successful call to this method.

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.
E_POINTER	The ppOutput parameter is NULL, or the dwOutputNum parameter is greater than or equal to the number of outputs. Output numbers begin with zero.
E_UNEXPECTED	The method failed for an unspecified reason.

Remarks

Manipulating the object retrieved by a call to GetOutputProps has no effect on the output media stream, unless the application also calls SetOutputProps.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only],Windows Media Format 9 Series SDK, or later versions of the SDK
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	wmsdkidl.h (include Wmsdk.h)
Library	Wmvcore.lib; WMStubDRM.lib (if you use DRM)

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