HRESULT IWICImagingFactory::CreateDecoderFromFilename([In] const wchar_t* wzFilename,[In, Optional] const GUID* pguidVendor,[In] unsigned int dwDesiredAccess,[In] WICDecodeOptions metadataOptions,[Out, Fast] IWICBitmapDecoder** ppIDecoder)

'宣言
 
Public Function CreateDecoderFromFilename( _
   ByVal filename As System.String, _
   ByVal guidVendorRef As System.Nullable(Of Guid), _
   ByVal desiredAccess As System.Integer, _
   ByVal metadataOptions As DecodeOptions _
) As BitmapDecoder

public BitmapDecoder CreateDecoderFromFilename( 
   System.string filename,
   System.Nullable<Guid> guidVendorRef,
   System.int desiredAccess,
   DecodeOptions metadataOptions
)