เพิ่มลายน้ำในงานนำเสนอ PPTX โดยใช้ C++

auto presentation = System::MakeObject<Presentation>();
auto slide = presentation->get_Slides()->idx_get(0);
auto master = presentation->get_Masters()->idx_get(0);
auto watermarkShape = slide->get_Shapes()->AddAutoShape(ShapeType::Triangle, 0.0f, 0.0f, 0.0f, 0.0f);

auto watermarkTextFrame = watermarkShape->AddTextFrame(u"Watermark");
presentation->Save(u"watermark.pptx", SaveFormat::Pptx);

auto presentation = System::MakeObject<Presentation>();
auto slide = presentation->get_Slides()->idx_get(0);
auto master = presentation->get_Masters()->idx_get(0);
auto watermarkShape = slide->get_Shapes()->AddAutoShape(ShapeType::Triangle, 0.0f, 0.0f, 0.0f, 0.0f);

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

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

presentation->Save(u"watermark2.pptx", SaveFormat::Pptx);