CreateRandomAccessStreamOverStream function (shcore.h)

Creates a Windows Runtime random access stream around an IStream base implementation.

Syntax

HRESULT CreateRandomAccessStreamOverStream(
  [in]  IStream      *stream,
  [in]  BSOS_OPTIONS options,
  [in]  REFIID       riid,
  [out] void         **ppv
);

Parameters

[in] stream

The COM stream to encapsulate.

[in] options

One of the BSOS_OPTIONS options that specify the behavior of the RandomAccessStream that encapsulates stream.

[in] riid

A reference to the IID of the interface to retrieve through ppv, typically IID_RandomAccessStream.

[out] ppv

When this method returns successfully, contains the interface pointer to the RandomAccessStream that encapsulates stream requested in riid.

Return value

If this function succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Remarks

Use the CreateRandomAccessStreamOverStream function to create a RandomAccessStream that encapsulates a COM IStream.

For info on utility classes that help with interoperation between Windows Runtime and COM streams, see the Remarks at RandomAccessStreamOverStream.

We recommend that you use the IID_PPV_ARGS macro, defined in Objbase.h, to package the riid and ppv parameters. This macro provides the correct IID based on the interface pointed to by the value in ppv, which eliminates the possibility of a coding error in riid that could lead to unexpected results.

Requirements

See also

CreateRandomAccessStreamOnFile

CreateStreamOverRandomAccessStream

RandomAccessStream