# Qt Bridge for Rust 0.3 Beta: CXX-Qt Compatibility and Soundness

DevFeed: [Qt Bridge for Rust 0.3 Beta: CXX-Qt Compatibility and Soundness](<https://devfeed.tech/articles/qt-bridge-for-rust-0-3-beta-cxx-qt-compatibility-and-soundness-58803.md>)

Original publisher: [Read original article](<https://www.qt.io/blog/qt-bridge-for-rust-0.3-cxx-qt-compatibility-and-soundness>)

Author: matthias.rauter@qt.io (Matthias Rauter)

Published: 2026-09-23T10:22:34Z

Content type: release

Language: en

Sources: [Qt](<https://devfeed.tech/sources/qt-blog.md>)

Topics: [Qt](<https://devfeed.tech/topics/qt.md>), [Rust](<https://devfeed.tech/topics/rust.md>), [interoperability](<https://devfeed.tech/topics/interoperability.md>), [Framework](<https://devfeed.tech/topics/framework.md>)

Tags: [beta](<https://devfeed.tech/tags/beta.md>), [compatibility](<https://devfeed.tech/tags/compatibility.md>), [cxx](<https://devfeed.tech/tags/cxx.md>), [dev-loop](<https://devfeed.tech/tags/dev-loop.md>), [development](<https://devfeed.tech/tags/development.md>), [linux](<https://devfeed.tech/tags/linux.md>), [macos](<https://devfeed.tech/tags/macos.md>), [qt](<https://devfeed.tech/tags/qt.md>), [qt-bridges](<https://devfeed.tech/tags/qt-bridges.md>), [rust](<https://devfeed.tech/tags/rust.md>), [windows](<https://devfeed.tech/tags/windows.md>)

## AI overview

Qt Bridge for Rust 0.3 is released as a beta focused on CXX-Qt compatibility and soundness. The update changes parts of the API, adopts CXX-Qt types and build utilities, improves failure modes, and reworks ownership management between Rust and QML.

## Source excerpt

As part of the on-going development of Qt Bridges, we are out with a new beta version of Qt Bridge for Rust, with a focus on CXX-Qt compatibility and soundness. The API surface has changed in only a handful of places compared to 0.2. Where it did change, it is mostly because we removed any API we could not make sound.