THotPDF.ReadLoadedPageThumbnail Method
Copies a page thumbnail to a caller-owned stream and optionally decodes its filter chain
Declaration
function ReadLoadedPageThumbnail(PageIndex: Integer;
Destination: TStream; DecodeFilters: boolean;
out AInfo: THPDFLoadedThumbnailInfo): boolean;
The result reports dimensions, bit depth, color space, filters, encoded size, decoded size, and automatic-generation state