在本教程中，我们将学习如何使用 C++ 在 PPTX 中添加图像水印。您可以使用 C++ 中的简单 API 接口在 PowerPoint 演示文稿中插入徽标、签名或任何视觉信息作为图像水印。该功能不依赖于 Microsoft PowerPoint 或任何用于在 Windows 或 Linux 平台上添加图像水印的应用程序。
使用 C++ 在 PPTX 中添加图像水印的步骤
- 从 NuGet 包管理器工具安装 Aspose.Slides for C++
- 添加对 Aspose::Slides 命名空间的引用
- 使用 Presentation Class 加载输入 PPTX 以添加图像水印
- 在所有主幻灯片中添加 PictureFrame 以添加图像水印
- 锁定添加的图像水印以避免更改
- 保存输出带水印的 PPTX 演示文件
您可以使用几行简单的代码将图像水印插入 C++ 中的 PowerPoint。此示例也适用于 PPT 文件格式。
使用 C++ 在 PPTX 中添加图像水印的代码
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| #pragma once | |
| #include <iostream> | |
| #include <DOM/Presentation.h> | |
| #include <DOM/IMasterSlideCollection.h> | |
| #include <DOM/IMasterSlide.h> | |
| #include <DOM/IShapeCollection.h> | |
| #include <DOM/IAutoShape.h> | |
| #include <DOM/ShapeType.h> | |
| #include <DOM/SlideSizeScaleType.h> | |
| #include <DOM/SlideSize.h> | |
| #include <DOM/ISlideSize.h> | |
| #include <DOM/IFillFormat.h> | |
| #include <DOM/IPictureFillFormat.h> | |
| #include <DOM/PictureFillMode.h> | |
| #include <DOM/ITextFrame.h> | |
| #include <DOM/IPortionFormat.h> | |
| #include <DOM/IParagraphCollection.h> | |
| #include <DOM/IParagraph.h> | |
| #include <DOM/IPortionCollection.h> | |
| #include <DOM/IPortion.h> | |
| #include <DOM/FillType.h> | |
| #include <DOM/NullableBool.h> | |
| #include <DOM/IColorFormat.h> | |
| #include <DOM/AutoShapeLock.h> | |
| #include <Export/SaveFormat.h> | |
| #include <DOM/IPPImage.h> | |
| #include <DOM/IImageCollection.h> | |
| #include <DOM/IPictureFrame.h> | |
| #include <drawing/Color.h> | |
| #include <drawing/Size.h> | |
| #include <drawing/size_f.h> | |
| #include <system/io/file_mode.h> | |
| #include <system/io/file_stream.h> | |
| using namespace Aspose::Slides; | |
| using namespace System; | |
| using namespace System::Drawing; | |
| using namespace System::IO; | |
| class AddWatermarkEx | |
| { | |
| public: | |
| static void AddImageWatermark() | |
| { | |
| // Load the input presentation for adding image watermark | |
| SharedPtr<Presentation> WatermarkPresentation = MakeObject<Presentation>(u"SourceInput.pptx"); | |
| String imageFilePath = u"Tulips.jpg"; | |
| //SharedPtr<System::Drawing::Bitmap> bitmap = MakeObject<System::Drawing::Bitmap>(imageFilePath); | |
| SharedPtr<FileStream> ImageStream = MakeObject<IO::FileStream>(imageFilePath, System::IO::FileMode::Open); | |
| SharedPtr<IPPImage> image = WatermarkPresentation->get_Images()->AddImage(ImageStream); | |
| // Accessing the master slides for adding image watermark | |
| for (SharedPtr <IMasterSlide> masterSlide : WatermarkPresentation->get_Masters()) | |
| { | |
| // Adding a Pptx image watermark shape | |
| SharedPtr <IPictureFrame> PptxWatermark = masterSlide->get_Shapes()->AddPictureFrame(ShapeType::Rectangle, | |
| WatermarkPresentation->get_SlideSize()->get_Size().get_Width() / 2 - 50, | |
| WatermarkPresentation->get_SlideSize()->get_Size().get_Height() / 2 - 50, | |
| 200, 50, image); | |
| // Set the fill type, fill format, and rotation angle of the shape | |
| PptxWatermark->set_Rotation(325); | |
| PptxWatermark->get_FillFormat()->set_FillType(FillType::Picture); | |
| PptxWatermark->get_FillFormat()->get_PictureFillFormat()->set_PictureFillMode(PictureFillMode::Stretch); | |
| // Locking Pptx image watermarked shape to be uneditable in PowerPoint | |
| PptxWatermark->get_ShapeLock()->Lock(); | |
| } | |
| // Save output presentation with watermark image | |
| WatermarkPresentation->Save(u"ImageWatermarkPresentation.pptx", Export::SaveFormat::Pptx); | |
| } | |
| }; |
在上一个主题中，我们学习了 如何使用 C++ 在 PPTX 中添加草稿水印。本主题重点介绍如何使用 C++ 在 pptx 中放置图像水印。
