Browse our Products

Aspose.Slides for C++ 25.2 Release Notes

This page contains release notes for Aspose.Slides for C++ 25.2

Supported Platforms

Aspose.Slides for C++ for Windows x64/x86 (Microsoft Visual Studio 2017 or later).
Aspose.Slides for C++ for Linux (Clang 3.9 or later, GCC 6.1 or later, glibc 2.23 or later).
Aspose.Slides for C++ for macOS x86_64/ARM64 (Xcode 13.4 or later).

New Features and Enhancements

Key	Summary	Category	Related Documentation
SLIDESNET-43623	Support for Trim Audio settings in PowerPoint presentations	Feature	https://docs.aspose.com/slides/net/audio-frame/
SLIDESNET-44791	Merged letters in word when saving presentation to HTML and PNG	Feature

Other Improvements and Changes

Key	Summary	Category	Related Documentation
SLIDESCPP-4004	Use Aspose.Slides for .NET 25.2 features	Enhancement	https://releases.aspose.com/slides/net/release-notes/2025/aspose-slides-for-net-25-2-release-notes/
SLIDESCPP-3984	Extracting Fade In and Fade Out settings from audio frames	Feature	https://docs.aspose.com/slides/cpp/audio-frame/
SLIDESCPP-3985	Getting volume value from audio frames	Feature	https://docs.aspose.com/slides/cpp/audio-frame/
SLIDESCPP-3987	A null reference exception occurs when converting a presentation to HTML5	Bug

Public API Changes

Added New Methods to get and set Fade In and Fade Out Duration of AudioFrame

The new methods, get_FadeInDuration(), set_FadeInDuration(), get_FadeOutDuration() and set_FadeOutDuration(), have been added to the IAudioFrame interface and the AudioFrame class. These methods allow you to specify the duration of the fade-in and fade-out effects for the media.

The following code sample demonstrates how to add a new audio frame with embedded audio and configure its fade-in and fade-out durations:

System::SharedPtr<Presentation> pres = System::MakeObject<Presentation>();

// Add audio frame
System::SharedPtr<IAudio> audio = pres->get_Audios()->AddAudio(System::IO::File::ReadAllBytes(u"sampleaudio.mp3"));
System::SharedPtr<IAudioFrame> audioFrame = pres->get_Slide(0)->get_Shapes()->AddAudioFrameEmbedded(50.0f, 50.0f, 100.0f, 100.0f, audio);

// Set the duration of the starting fade for 200ms
audioFrame->set_FadeInDuration(200.0f);
// Set the duration of the ending fade for 500ms
audioFrame->set_FadeOutDuration(500.0f);

pres->Save(u"AudioFrameFade_out.pptx", SaveFormat::Pptx);

Added New Methods to get and set Volume Value of Audio Frame

The new methods, get_VolumeValue() and set_VolumeValue(), have also been added to the IAudioFrame interface and the AudioFrame class. These methods allows you to adjust the audio volume as a percentage.

This code sample demonstrates how to add a new audio frame with embedded audio and set its volume to 85%:

System::SharedPtr<Presentation> pres = System::MakeObject<Presentation>();

// Add audio frame
System::SharedPtr<IAudio> audio = pres->get_Audios()->AddAudio(System::IO::File::ReadAllBytes(u"sampleaudio.mp3"));
System::SharedPtr<IAudioFrame> audioFrame = pres->get_Slide(0)->get_Shapes()->AddAudioFrameEmbedded(50.0f, 50.0f, 100.0f, 100.0f, audio);

// Set the audio volume for 85%
audioframe->set_VolumeValue(85.0f);

pres->Save(u"AudioFrameValue_out.pptx", SaveFormat::Pptx);

Added New Methods to get and set Trim From Start and Trim From End Time of Audio Frame

The new methods, get_TrimFromStart(), set_TrimFromStart(), get_TrimFromEnd() and set_TrimFromEnd(), have been added to the IAudioFrame interface and the AudioFrame class. These methods allow you to specify the duration to trim from the start and end of the media during playback.

The following code sample demonstrates how to add a new audio frame with embedded audio and set the trimming times:

System::SharedPtr<Presentation> pres = System::MakeObject<Presentation>();

// Add audio frame
System::SharedPtr<IAudio> audio = pres->get_Audios()->AddAudio(System::IO::File::ReadAllBytes(u"sampleaudio.mp3"));
System::SharedPtr<IAudioFrame> audioFrame = pres->get_Slide(0)->get_Shapes()->AddAudioFrameEmbedded(50.0f, 50.0f, 100.0f, 100.0f, audio);

// Set the start trimming time 1.5 seconds
audioFrame->set_TrimFromStart(1500.0f);

// Set the end trimming time 2 seconds
audioFrame->set_TrimFromEnd(2000.0f);

Added New Methods to Disable Ligatures in Export Options Classes

The new methods, get_DisableFontLigatures() and set_DisableFontLigatures(), have been added to the IRenderingOptions, ISVGOptions, and IHtmlOptions interfaces, as well as their implementation classes. These methods allows you to control text rendering during export by enabling or disabling ligatures in the rendered text.

The following code sample demonstrates how to disable ligatures during export using set_DisableFontLigatures() methods.

System::SharedPtr<Presentation> pres = System::MakeObject<Presentation>(u"example.pptx");

// Configure export options
System::SharedPtr<HtmlOptions> options = System::MakeObject<HtmlOptions>();
options->set_DisableFontLigatures(true); // Disable ligatures in rendered text

// Export presentation to HTML with disabled ligatures
pres->Save(u"output.html", SaveFormat::Html, options);

Added New Methods to get Parent Shape or Parent Cell of Text Frame

The new methods, get_ParentShape() and get_ParentCell(), have been added to the ITextFrame interface and the TextFrame class.

The get_ParentShape() method returns the parent shape or nullptr if the parent object does not implement the IShape interface.
The get_ParentCell() property returns the parent cell or nullptr if the parent object does not implement the ICell interface.

The following examples demonstrate how these properties work:

System::SharedPtr<Presentation> presentation = System::MakeObject<Presentation>(u"SomePresentation.pptx");

System::SharedPtr<AutoShape> autoShape = System::ExplicitCast<AutoShape>(presentation->get_Slide(0)->get_Shape(0));

// These assertions are always true
ASSERT_EQ(autoShape->get_TextFrame()->get_ParentShape(), autoShape);
ASSERT_EQ(autoShape->get_TextFrame()->get_ParentCell(), nullptr);

System::SharedPtr<Presentation> presentation = System::MakeObject<Presentation>(u"SomePresentation.pptx");

System::SharedPtr<Table> table = System::ExplicitCast<Table>(presentation->get_Slide(0)->get_Shape(0));
System::SharedPtr<ICell> cell = table->idx_get(0, 0);

// These assertions are always true
ASSERT_EQ(cell->get_TextFrame()->get_ParentShape(), nullptr);
ASSERT_EQ(cell->get_TextFrame()->get_ParentCell(), cell);