เพิ่มลายน้ำในงานนำเสนอ PPTX ด้วย C++

auto presentation = MakeObject<Presentation>(u"presentation.pptx");
auto masterSlide = presentation->get_Master(0);
auto watermarkShape = masterSlide->get_Shapes()->AddAutoShape(ShapeType::Rectangle, 100, 100, 400, 80);

watermarkShape->AddTextFrame(u"Watermark");
presentation->Save(u"watermarked-presentation.pptx", SaveFormat::Pptx);
presentation->Dispose();

auto presentation = MakeObject<Presentation>(u"presentation.pptx");
auto masterSlide = presentation->get_Master(0);
auto watermarkShape = masterSlide->get_Shapes()->AddAutoShape(ShapeType::Rectangle, 100, 100, 400, 200);

auto imageData = File::ReadAllBytes(u"watermark.png");
auto watermarkImage = presentation->get_Images()->AddImage(imageData);

watermarkShape->get_FillFormat()->set_FillType(FillType::Picture);
watermarkShape->get_FillFormat()->get_PictureFillFormat()->get_Picture()->set_Image(watermarkImage);
watermarkShape->get_FillFormat()->get_PictureFillFormat()->set_PictureFillMode(PictureFillMode::Stretch);

presentation->Save(u"image-watermarked-presentation.pptx", SaveFormat::Pptx);
presentation->Dispose();