Embedding Slint UI Within a Qt Application (C++)
Qt is a mature and feature-rich framework, but building flexible and declarative UIs often requires more than widgets and signals. That’s where Slint fits in. It provides a compact, declarative syntax for building modern UIs while staying native and lightweight.
Some Qt-based projects, like LibrePCB, already use Slint to modernise their UI without abandoning their existing Qt foundation. Check the full blog details here. Embedding Slint lets you:
Keep your Qt app logic and backend code intact.
Use Slint for fast, declarative, and maintainable UI layers.
Mix and match Slint views with traditional Qt widgets.
Gradually migrate UI parts without a full rewrite.
Watch the walkthrough video here:
Slint UI 102: Embedding Slint UI Within a Qt Application | C++
What you’ll learn:
How to embed Slint UI components in a Qt app
How to compile
.slintfiles to native C++How to synchronise data between Qt and Slint
How to manage event flow and cleanup
Resources:
Slint Documentation: https://slint.dev/docs
Slint Source Code: https://github.com/slint-ui/slint
Slint C++ Template: https://github.com/slint-ui/slint-cpp-template
Full Source Code from this video: https://github.com/allankoechke/qt-slint-integration-cpp