ทำงานกับข้อความในรูปแบบ PDF ผ่าน C++

    // Load the PDF file
    auto document = MakeObject<Document>(_dataDir + inputFileName);

    // get particular page
    auto pdfPage = document->get_Pages()->idx_get(1);

    // create text fragment
    auto textFragment = MakeObject<TextFragment>("Aspose.PDF");
    textFragment->set_Position(MakeObject<Position>(80, 700));

    // set text properties
    textFragment->get_TextState()->set_Font(FontRepository::FindFont(u"Verdana"));
    textFragment->get_TextState()->set_FontSize(14);
    textFragment->get_TextState()->set_ForegroundColor(Color::get_Blue());
    textFragment->get_TextState()->set_BackgroundColor(Color::get_LightGray());

    // create TextBuilder object
    auto textBuilder = MakeObject<TextBuilder>(pdfPage);
    // append the text fragment to the PDF page
    textBuilder->AppendText(textFragment);

    // Save resulting PDF document.
    document->Save(_dataDir + outputFileName);