property OnKeyPress: TKeyPressEvent;
Fired for each character generated by the keyboard. The Sender parameter references the TPdfView instance that raised the event, so a single handler can serve multiple views by inspecting Sender.
Typical uses include: filter or transform typed characters before they reach text-selection or form-field handlers. Because the handler runs on the VCL main thread, you can update form controls and call other VCL APIs directly.
Handlers must return quickly — PDFium rendering and form filling occur on the same thread, and any delay here postpones the next page repaint.
TabStop ל-True אם אתה רוצה שפקד זה ישתתף במעבר מיקוד של מקש Tab כך שאירועי מקלדת יישלחו.PdfView1.OnKeyPress := MyHandler.Set Cursor / Set Caret תואמות ב-TPdfView כדי לשמור על משוב חזותי מסונכרן.
procedure TForm1.PdfViewOnKeyPress(Sender: TObject; var Key: Char);
begin
// filter or transform typed characters before they reach text-selection or form-field handlers
Caption := Format('OnKeyPress on page %d', [PdfView1.PageNumber]);
end;