Qt Design Studio Manual

Define the look and feel of the UI from wireframe to final implementation with preset UI components. Import UI design files from 2D and 3D tools to Qt Design Studio, which can turn them into code for developers. Qt Design Studio prototyping features bring your designs to life and simulate and validate interactions and dynamic behavior. You can test, preview, and fine-tune your designs to pixel-perfection live on the desktop or target device.

Available under certain Qt licenses.
Find out more.