IWICImagingFactory::CreateDecoderFromFilename method (wincodec.h)

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

[in] wzFilename

Type: LPCWSTR

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

[in] pguidVendor

Type: const GUID*

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

[in] dwDesiredAccess

Type: DWORD

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

For more information, see Generic Access Rights.

[in] metadataOptions

Type: WICDecodeOptions

The WICDecodeOptions to use when creating the decoder.

[out, retval] ppIDecoder

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