# Merge OTP Files in C++

> Merge OTP files in C++. Use Aspose.Slides for C++ to clone slides from one OTP presentation template into another and save the merged result.

Source: https://products.aspose.com/slides/cpp/merger/otp/
Updated: 2026-08-11



## Merge OTP Files Using C++

To merge `OTP` files, use [Aspose.Slides for C++](/slides/cpp/), a C++ API for working with presentation files. Install the latest package from [NuGet](https://www.nuget.org/packages/Aspose.Slides.Cpp/) or use the Package Manager Console command below.

### Command

```powershell
PM> Install-Package Aspose.Slides.Cpp
```

## Steps for Merging OTP Files in C++

Merge `OTP` files with [Aspose.Slides for C++](/slides/cpp/) by cloning slides from one presentation into another.

Load the destination and source `OTP` files with the `Presentation` class.

Iterate through the source slides with `get_Slides`.

Add each slide to the destination presentation with `AddClone`.

Save the merged file with `SaveFormat::Otp`.

## System Requirements

 Aspose.Slides for C++ is supported on all major platforms and operating systems. Please make sure that you have the following prerequisites.

-  Microsoft Windows, Linux, macOS, or another compatible OS with the supported C++ runtime.
-  Aspose.Slides for C++ library referenced in your project.

### Merge OTP Files - C++

```cpp
auto destinationPresentation = MakeObject<Presentation>(u"first.otp");
auto sourcePresentation = MakeObject<Presentation>(u"second.otp");

for (auto&& slide : sourcePresentation->get_Slides())
{
    destinationPresentation->get_Slides()->AddClone(slide);
}

destinationPresentation->Save(u"merged.otp", SaveFormat::Otp);
sourcePresentation->Dispose();
destinationPresentation->Dispose();
```

## About Aspose.Slides for C++ API

 The Aspose.Slides API can read, write, manipulate, and convert Microsoft PowerPoint presentations to PDF, XPS, HTML, TIFF, ODP, and other supported formats. You can create presentations from scratch and save them in a supported output format. Aspose.Slides is a standalone API for creating, parsing, and manipulating presentations, slides, and their elements; it does not require Microsoft PowerPoint or OpenOffice.

Files with the `.OTP` extension are OpenDocument presentation templates. They store reusable layouts, styles, formatting, backgrounds, and other content for creating new presentations with a consistent design. OTP files can be created and opened by applications that support the OpenDocument Format (ODF). The format is comparable to the Microsoft PowerPoint POT and POTX template formats.

## Other Supported Merging Formats

- [ODP](/slides/cpp/merger/odp/) — OpenDocument presentation
- [POT](/slides/cpp/merger/pot/) — PowerPoint template
- [POTM](/slides/cpp/merger/potm/) — Macro-enabled PowerPoint template
- [POTX](/slides/cpp/merger/potx/) — PowerPoint Open XML template
- [PPS](/slides/cpp/merger/pps/) — PowerPoint slide show
- [PPSM](/slides/cpp/merger/ppsm/) — Macro-enabled PowerPoint slide show
- [PPSX](/slides/cpp/merger/ppsx/) — PowerPoint Open XML slide show
- [PPT](/slides/cpp/merger/ppt/) — PowerPoint presentation
- [PPTM](/slides/cpp/merger/pptm/) — Macro-enabled PowerPoint presentation
- [PPTX](/slides/cpp/merger/pptx/) — PowerPoint Open XML presentation