Find property

Searches for Pattern starting from PageNum (or the current page if -1) and returns the global character index of the first match.

Returns -1 if not found. After a match, call Find with the next start index for incremental search, or use FindNext on TPdfView for an interactive UI.

Wraps the corresponding PDFium API and exposes it as a TPdf instance member so consumers do not have to manage FPDF_DOCUMENT handles directly.

• Always check Pdf1.Active before calling page-scoped operations; methods that require an open document raise EPdfError otherwise.
• Document-edit methods (AddPage / DeletePage / UpdatePage / CreateAnnotation) leave the in-memory document dirty — remember to call SaveAs to persist.
• Class methods (LoadLibrary / UnloadLibrary / GetRecommendedV8Flags) can be called without a TPdf instance.