Добавить текстовый водяной знак в PPTX через C++

// Load the desired PPTX File
SharedPtr<Presentation> pres = MakeObject<Presentation>(u"templatePath.pptx");

// Access first slide
SharedPtr<ISlide> slide = pres->get_Slides()->idx_get(0);

// Add an AutoShape of Rectangle type
SharedPtr<IAutoShape>  ashp = slide->get_Shapes()->AddAutoShape(ShapeType::Rectangle, 150, 75, 150, 50);

ashp->get_FillFormat()->set_FillType(FillType::NoFill);

// Add TextFrame to the Rectangle
ashp->AddTextFrame(u" ");

// Accessing the text frame
SharedPtr<ITextFrame>  txtFrame = ashp->get_TextFrame();

// Create the Paragraph object for text frame
SharedPtr<IParagraph> paragraph = txtFrame->get_Paragraphs()->idx_get(0);

// Create Portion object for paragraph
SharedPtr<IPortion> portion = paragraph->get_Portions()->idx_get(0);
portion->set_Text(u"Watermark Text Watermark Text Watermark Text");

//Adding another shape
SharedPtr<IAutoShape>  ashape2 = slide->get_Shapes()->AddAutoShape(ShapeType::Triangle, 200, 365, 400, 150);

//Reorder shape
slide->get_Shapes()->Reorder(2, ashape2);

// Save PPTX to Disk
pres->Save(u"outPath.pptx", Aspose::Slides::Export::SaveFormat::Pptx);