This topic shows, how to protect PPTX Presentation using C++ by setting a password for encryption. There are different ways one can secure the PowerPoint presentation like by applying a textual or image watermark or making it read only. In this tutorial, we’ll be programmatically setting password for protecting presentation using C++.
Steps to Lock PowerPoint Presentation in C++
- Use Aspose.Slides for C++ NuGet package
- Add reference to Aspose::Slides and Export namespaces
- Load the presentation file for protection using Presentation class instance
- Use Encrypt method exposed by ProtectionManager class to secure presentation with a password
- Save the password protected presentation using Save method and saving as PPTX
The Aspose.Slides for C++ API can help you to secure PowerPoint presentation using C++ without any reliance on Microsoft Interop or even Microsoft PowerPoint being installed on your machine.
Code to Lock PowerPoint Presentation in C++
| #pragma once | |
| #include <DOM/Presentation.h> | |
| #include <Util/License.h> | |
| #include <Export/SaveFormat.h> | |
| #include <DOM/ProtectionManager.h> | |
| using namespace Aspose::Slides; | |
| using namespace Aspose::Slides::Export; | |
| using namespace System; | |
| class ProtectPresentationEx { | |
| public: | |
| static void SaveWithPassword() | |
| { | |
| //Set Aspose license before securing PowerPoint presentation | |
| //using Aspose.Slides for C++ | |
| const String LicPath = u"Aspose.Total.NET.lic"; | |
| SharedPtr<License> lic = MakeObject<License>(); | |
| lic->SetLicense(LicPath); | |
| //create an object of Presentation class from Aspose.Slides namespace | |
| //and provide the PowerPoint presentation to secure in the constructor | |
| SharedPtr<Presentation> pres = MakeObject<Presentation>(u"Input.pptx"); | |
| //specify the password with which you want to secure the presentation | |
| //this can be taken as input password from the user/admin etc. | |
| const String PasswordForPresentationSecurity = u"8ma2bzdqgo"; | |
| pres->get_ProtectionManager()->Encrypt(PasswordForPresentationSecurity); | |
| //Finally, save the output presentation secured with password | |
| //provide PPTX as save format | |
| pres->Save(u"PresentationSecuredWithPassword.pptx", SaveFormat::Pptx); | |
| } | |
| }; |
Earlier, in another how-to topic, we have looked How to Insert Draft Watermark in PowerPoint Presentation in C#. But in the above example we have seen how to secure PPTX presentation in C++. The API also have provision to unlock the protection on presentation by removing password in C++ as well. There are few lines of code in C++ allowing you to secure your presentation.
