Why to Convert
Are you a C++ developer looking to add a feature to your C++ applications that will allow you to convert MHTML to POTM? MHTML is a web page archive format that is used to store web pages in a single file. POTM is a Microsoft PowerPoint Open XML Macro-Enabled Presentation format that is used to store presentations. Converting MHTML to POTM can be a useful feature for C++ developers who need to store web pages in a presentation format.
How Aspose.Total Helps for MHTML to POTM Conversion
Integrating MHTML to POTM conversion into your C++ applications can be done in two simple steps with the help of Aspose.Total for C++. Aspose.Total for C++ is a suite of APIs that provides developers with the tools they need to create, manipulate, and convert documents and images. The first step is to use Aspose.PDF for C++ to export MHTML to PPTX. Aspose.PDF for C++ is a powerful PDF manipulation API that allows developers to create, edit, and convert PDF documents. The second step is to use Aspose.Slides for C++ to convert PPTX to POTM. Aspose.Slides for C++ is a powerful presentation manipulation API that allows developers to create, edit, and convert presentations. With the help of Aspose.Total for C++, developers can easily integrate MHTML to POTM conversion into their C++ applications.
C++ API to Export MHTML to POTM
Get Started with C++ File Automation APIs
Install from command line as
nuget install Aspose.Total.Cpp or via Package Manager Console of Visual Studio with
Alternatively, get the offline MSI installer or DLLs in a ZIP file from downloads .
// load MHTML file with an instance of Document class auto doc = MakeObject<Document>(u"template.mhtml"); // save MHTML as PPTX format doc->Save(u"PptxOutput.pptx", SaveFormat::Pptx); // instantiate a Presentation object that represents a PPTX file SharedPtr<Presentation> prs = MakeObject<Presentation>(u"PptxOutput.pptx"); // save the presentation as Potm format prs->Save(u"output.potm", Aspose::Slides::Export::SaveFormat::Potm);
Change Password of MHTML Document via C++
In the process of rendering MHTML to POTM, you can open a password protected MHTML and also change its password. In order to change the password of a MHTML file, you must know the owner password of that document. You can load password protected PDF document with Aspose.PDF for C++ by specifying its owner password and use ChangePasswords method to change the password.
// load an existing MHTML Document auto doc = MakeObject<Document>(L"input.mhtml", L"owner"); // change password of MHTML Document doc->ChangePasswords(L"owner", L"newuser", L"newuser"); // save the document doc->Save(L"output.Doc");
Add Images From Web in POTM File via C++
After converting MHTML to POTM, you can also add images from web to your output document. Aspose.Slides for C++ supports operations with images in these popular formats: JPEG, PNG, BMP, GIF, and others. You can add one or several images on your computer onto a slide in a presentation. This sample code in C++ shows you how to add an image to a POTM file
// instantiate a Presentation object that represents a POTM file auto pres = System::MakeObject<Presentation>("output.potm"); // get slide auto slide = pres->get_Slides()->idx_get(0); // initialize Web Client auto webClient = System::MakeObject<WebClient>(); // get image data auto imageData = webClient->DownloadData(System::MakeObject<Uri>(u"[REPLACE WITH URL]")); // add image auto image = pres->get_Images()->AddImage(imageData); // add picture frame slide->get_Shapes()->AddPictureFrame(ShapeType::Rectangle, 10.0f, 10.0f, 100.0f, 100.0f, image); // save updated file pres->Save(u"updated.potm", SaveFormat::Potm);
Explore MHTML Conversion Options with C++
What is MHTML File Format?
MHTML files are often created by web browsers when users save web pages for offline viewing or archiving purposes. By bundling all the necessary resources into one file, MHTML ensures that the web page can be viewed and rendered accurately, even without an internet connection or access to the original server.
The MHTML format follows the MIME standard, which is used for encoding and exchanging various types of data over the internet. It uses multipart MIME encoding to package the HTML code and associated resources into a single file. The file typically has a .mht or .mhtml file extension.
MHTML files can be opened and viewed by web browsers that support the format, such as Internet Explorer, Microsoft Edge, and Opera. Some text editors and specialized software also provide the ability to open and edit MHTML files.
The MHTML format offers advantages in terms of portability and convenience, as it allows users to save and share web pages as a single file, ensuring the preservation of the page’s layout, formatting, and linked resources. However, it’s worth noting that MHTML is not as widely used as other web formats like HTML or PDF, and compatibility may vary across different software and platforms.
What is POTM File Format?
POTM is a file format used in Microsoft PowerPoint to store presentation templates that also include macros. Similar to the POTX format, POTM files are part of the Office Open XML (OOXML) format introduced in PowerPoint 2007.
The “M” in POTM stands for macros, indicating that these templates can contain VBA (Visual Basic for Applications) code that automates tasks and enhances the functionality of the presentation. This allows users to create dynamic and interactive templates that go beyond static design elements.
POTM files offer the same benefits as POTX files in terms of providing pre-designed slide layouts, formatting, and styles. However, the inclusion of macros adds an extra layer of interactivity and automation to the templates. Macros can perform tasks such as data manipulation, calculations, slide transitions, and user interactions, making presentations more engaging and efficient.
To use a POTM file, users can open it in PowerPoint or select it as a template when creating a new presentation. The macros embedded in the POTM template can be executed and interacted with during the presentation, providing enhanced functionality beyond what is possible with a standard template.
It’s important to note that due to security concerns, some systems and organizations may have restrictions on running macros in PowerPoint presentations. In such cases, users may need to adjust their security settings or obtain necessary permissions to enable the execution of macros in POTM files.
POTM files are compatible with different versions of PowerPoint on various platforms, allowing users to create and share templates with macros across different devices and environments. They provide a powerful tool for creating interactive and automated presentations, offering greater flexibility and customization options for users.