raygui is a C graphics interface toolkit and immediate mode GUI library used for building interactive utility panels. It functions as a themed UI framework that renders interface controls instantly based on application logic without maintaining persistent state.
The toolkit includes a visual layout designer for managing icon sets and defining styles. It supports the application of custom themes and font data through binary files or embedded headers to modify the appearance of the interface.
The library provides standard interface controls such as buttons, sliders, and color pickers, along with interactive input boxes. It manages visual presentation through floating window containers, scrollable panels, and the integration of monochrome icons.
The project is distributed as a header-only implementation.