BExplorer.Shell.Interop.ShellThumbnail.CalculateFlags C# (CSharp) Method

        private SIIGBF CalculateFlags()
        {
            SIIGBF flags = 0x0000;

            if (AllowBiggerSize)
            {
                flags |= SIIGBF.BiggerSizeOk;
            }

            if (FormatOption != ShellThumbnailFormatOption.IconOnly)
            {
                if (RetrievalOption == ShellThumbnailRetrievalOption.CacheOnly)
                {
                    flags |= SIIGBF.InCacheOnly;
                }
                else if (RetrievalOption == ShellThumbnailRetrievalOption.MemoryOnly)
                {
                    flags |= SIIGBF.MemoryOnly;
                }
            }

            if (FormatOption == ShellThumbnailFormatOption.IconOnly)
            {
                flags |= SIIGBF.IconOnly;
            }
            else if (FormatOption == ShellThumbnailFormatOption.ThumbnailOnly)
            {
                flags |= SIIGBF.ThumbnailOnly;
            }

            return flags;
        }