reNightDuotone low-vision render optionproperty NightDuotoneInk: TColor;
When reNightDuotone is present in Options, TPdfView maps rendered page luminance onto NightDuotoneInk and NightDuotonePaper before overlays are painted
انتساب این ویژگی وقتی reNightDuotone فعال است نما را فوراً نامعتبر میکند
$0000C8FF, an amber ink colour for black-paper night viewingPdfView1.NightDuotoneInk := $0000C8FF;
PdfView1.Options := PdfView1.Options + [reNightDuotone];