เพิ่มแสตมป์หน้าลงใน PDF ผ่าน C++

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

    auto bluePageStamp = MakeObject<PdfPageStamp>(_dataDir + pageStampFileName, 1);
    bluePageStamp->set_Height(800);
    bluePageStamp->set_Background(true);

    auto plumPageStamp = MakeObject<PdfPageStamp>(_dataDir + pageStampFileName, 2);
    plumPageStamp->set_Height(800);
    plumPageStamp->set_Background(true);

    for (int i = 1; i < 5; i++)
    {
        if (i % 2 == 0)
            document->get_Pages()->idx_get(i)->AddStamp(bluePageStamp);
        else
            document->get_Pages()->idx_get(i)->AddStamp(plumPageStamp);
    }

    document->Save(_dataDir + outputFileName);