ทำงานกับแสตมป์ในรูปแบบ PDF ผ่าน C++

    String _dataDir("C:\\Samples\\");

    // String for input file name
    String inputFileName("AddTextStamp.pdf");
    String outputFileName("AddTextStamp_out.pdf");

    // Open document
    auto document = MakeObject<Document>(_dataDir + inputFileName);

    // Create text stamp
    auto textStamp =MakeObject<TextStamp>(u"Sample Stamp");

    // Set whether stamp is background
    textStamp->set_Background(true);
    // Set origin
    textStamp->set_XIndent(100);
    textStamp->set_YIndent(100);
    // Rotate stamp
    textStamp->set_Rotate(Rotation::on90);

    // Set text properties
    textStamp->get_TextState()->set_Font(FontRepository::FindFont(u"Arial"));
    textStamp->get_TextState()->set_FontSize(14.0F);
    textStamp->get_TextState()->set_FontStyle(FontStyles::Bold);
    textStamp->get_TextState()->set_FontStyle(FontStyles::Italic);
    textStamp->get_TextState()->set_ForegroundColor(Color::get_Green());
    // Add stamp to particular page
    document->get_Pages()->idx_get(1)->AddStamp(textStamp);

    // Save output document
    document->Save(_dataDir + outputFileName);