DecodeImageEx function

Decodes an image using a specified MIME type.

Syntax

HRESULT DecodeImageEx(
  _In_ IStream         *pStream,
  _In_ IMapMIMEToCLSID *pMap,
  _In_ IUnknown        *pEventSink,
  _In_ LPCWSTR         pszMIMETypeParam
);

Parameters

• pStream [in]
  A stream of bytes.

• pMap [in]
  A map of MIME types and CLSIDs. Specify NULL to use a default MIME map.

• pEventSink [in]
  An object that supports the IImageDecodeEventSink interface.

• pszMIMETypeParam [in]
  A MIME type. Specify NULL to identify the MIME type from data passed in pStream.

Return value

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

Remarks

The pMap parameter is used to determine the correct IImageDecodeFilter decoder. If pszMIMETypeParam is not NULL, the map must contain an entry for the specified MIME type.

Requirements

See also

Reference

IMapMIMEToCLSID

Other Resources

IStream