Ultra App Kit engine

Built to power a new generation of game development tools, Ultra App Kit provides an easy-to-use C++ programming SDK for creating desktop GUI applications.

Make it Snappy

Unlike other alternatives, Ultra App Kit uses retained mode rendering with system-level drawing commands. This makes resizing windows and interacting with screen elements fast and responsive, even with the most complex interfaces.

Pixel-Perfect Pixels, at any Resolution

DPI scaling is baked into the core of our design, for a beautiful clean appearance on any screen.

Supported Widgets

• Label
• Button (push, checkbox, radio, and toggle styles)
• ProgressBar
• TextField
• TextArea
• ComboBox
• ListBox
• Slider (scrollbar, trackbar, and stepper styles)
• Draggable multi-select TreeView
• Create your own!

API Design

• C++ shared pointers everywhere
• Extensible widgets system
• Extensive documentation with examples for each command

UI Features

• Resolution independent for any DPI (16K+)
• Load SVG vector images
• Filter and sort widget items by name
• Set widget and item image
• Change mouse cursor
• Custom color schemes stored in JSON files

Other Features

• File I/O
• File system watcher
• Memory allocation and management
• Image loading, saving, processing
• Package system for loading files from compressed / encrypted archives
• Plugin system
• Thread management
• String manipulation (split, search, conversion, etc.)
• Message boxes and file / folder requester