Tài liệu dành cho nhà phát triển PDFiumPas

Selects a same-page span of TPdfWordBox records as one TPdfView text selection

Syntax

function SelectWordSpan(const Words: TPdfWordBoxes; StartIndex, EndIndex: Integer): Boolean;

Boolean

SelectWordSpan clamps the requested word indexes, requires both endpoints on the same page, then selects the combined character range

Use it with PageWordBoxes when the current spoken word or phrase needs a real viewer text selection

Pass word boxes produced from the same document and page text model as the active viewer page
The method returns False when the requested range cannot be selected

var Words: TPdfWordBoxes;
begin
Words := PdfView1.PageWordBoxes;
PdfView1.SelectWordSpan(Words, 0, 4);
end;