Direct2D hardware-accelerated rendering, Fluent 2 design system, 29+ built-in controls, declarative .ui markup, and a pure C API — all in a single DLL.
UI Core is a compact Windows UI framework delivering Microsoft's Fluent 2 design language through a simple C interface and declarative markup files for fast native apps.
How It Works
You're building a Windows app and want a modern, beautiful look that's fast and lightweight without heavy dependencies.
Download the single tiny file that powers all the modern visuals and controls.
Describe your app's layout and buttons in a simple text file, like sketching a page.
Link clicks and changes to your app's logic using a handful of lines in your preferred language.
Run it and instantly see a smooth, professional Windows interface that feels native and snappy.
Edit the layout file and refresh to see changes appear without rebuilding anything.
Package your beautiful, high-performance Windows app that's tiny and ready to share with users.
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