Render PDF to OTP within C++ Applications
Convert PDF to OTP within your C++ Applications without using Microsoft® PowerPoint
Why to Convert PDF to OTP?
PDF to OTP conversion is a useful feature for C++ developers who want to add a secure authentication system to their applications. OTP (One Time Password) is a secure authentication system that is used to verify the identity of a user. It is a unique code that is sent to the user’s mobile device or email address. The user then has to enter the code in order to access the application.
How Aspose.Total Helps for PDF to OTP Conversion?
Aspose.Total for C++ is a comprehensive suite of APIs that can help C++ developers to integrate PDF to OTP conversion feature inside their applications. It includes two APIs, Aspose.PDF for C++ and Aspose.Slides for C++. With Aspose.PDF for C++, developers can export PDF to PPTX. And with Aspose.Slides for C++, developers can convert PPTX to OTP. Both APIs come under the Aspose.Total for C++ package. This makes it easy for developers to integrate PDF to OTP conversion feature inside their applications.
C++ API to Export PDF to OTP
- Open PDF file using Document class reference
- Convert PDF to PPTX by using Save method function
- Load PPTX document by using Presentation class reference
- Save the document to OTP format using
Save
member function and set
Otpas SaveFormat
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 Install-Package Aspose.Total.Cpp.
Alternatively, get the offline MSI installer or DLLs in a ZIP file from downloads .
// load PDF file with an instance of Document class
auto doc = MakeObject<Document>(u"template.pdf");
// save PDF 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 Otp format
prs->Save(u"output.otp", Aspose::Slides::Export::SaveFormat::Otp);
Change Password of PDF Document via C++
In the process of rendering PDF to OTP, you can open a password protected PDF and also change its password. In order to change the password of a PDF 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 PDF Document
auto doc = MakeObject<Document>(L"input.pdf", L"owner");
// change password of PDF Document
doc->ChangePasswords(L"owner", L"newuser", L"newuser");
// save the document
doc->Save(L"output.Doc");
Add Images From Web in OTP File via C++
After converting PDF to OTP, 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 OTP file
// instantiate a Presentation object that represents a OTP file
auto pres = System::MakeObject<Presentation>("output.otp");
// 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.otp", SaveFormat::Otp);