THPDFHeadlessDocument.SetRichTextFieldValueWithFamilies

procedure SetRichTextFieldValueWithFamilies(FieldIndex: Integer;
  const Runs: THPDFHeadlessRichTextRuns;
  const Families: THPDFHeadlessRichTextFontFamilies;
  const Options: THPDFHeadlessTextAppearanceOptions);

Transactionally regenerate every widget appearance with selected family fonts and update V, canonical RV and the RichText flag together

The existing read-only, maximum-length, password, comb, file-select, encryption, authenticated signature and field-lock policies apply; failures leave the loaded field graph unchanged

Use SaveToFile to publish the prepared graph to an independent destination; the source remains read-only

Named family behavior · Document API