IWICImagingFactory::CreateDecoderFromFilename method

Creates a new instance of the IWICBitmapDecoder class based on the given file.

Syntax

HRESULT CreateDecoderFromFilename(
  [in]                LPCWSTR           wzFilename,
  [in]          const GUID              *pguidVendor,
  [in]                DWORD             dwDesiredAccess,
  [in]                WICDecodeOptions  metadataOptions,
  [out, retval]       IWICBitmapDecoder **ppIDecoder
);

Parameters

wzFilename [in]

Type: LPCWSTR

A pointer to a null-terminated string that specifies the name of an object to create or open.

pguidVendor [in]

Type: const GUID*

The GUID for the preferred decoder vendor. Use NULL if no preferred vendor.

dwDesiredAccess [in]

Type: DWORD

The access to the object, which can be read, write, or both.

Value	Meaning
GENERIC_READ	Read access.
GENERIC_WRITE	Write access.

 

For more information, see Generic Access Rights.

metadataOptions [in]

Type: WICDecodeOptions

The WICDecodeOptions to use when creating the decoder.

ppIDecoder [out, retval]

Type: IWICBitmapDecoder**

A pointer that receives a pointer to the new IWICBitmapDecoder.

Return value

Type: HRESULT

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

Requirements