PDFiumPas-kehittäjäviite

Unit: PDFium

Etsii seuraavan tai edellisen TPdfReadingUnitin, jonka Kind vastaa pyydettyä TPdfContentFragmentKind-arvoa

Syntax

function NextReadingUnitOfKind(const Units: TPdfReadingUnits; CurrentIndex: Integer; Kind: TPdfContentFragmentKind; GoForward: Boolean): Integer;

Parameters

Units	`TPdfReadingUnits`
CurrentIndex	`Integer`
Kind	`TPdfContentFragmentKind`
GoForward	`Boolean`

Return Value

Integer

Description

Reading units keep headings and figure alternate text whole, split paragraph text at sentence boundaries, preserve decimal points, and leave the reading cursor as a caller-owned array index

Use Rects with TPdfView.SetReadingHighlight and Language to coordinate visual highlighting with a TTS voice

Remarks

This is a pure helper and does not require an active component instance
API names, type names, and PDF terms keep their original spelling so code search remains reliable

Example

Index := NextReadingUnitOfKind(Units, Index, cfHeading, True);

NextReadingUnitOfKind-funktio