Redkite GUI Toolkit 2.0.0 has been released. Geonkick is using this toolkit to develop its UI. The toolkit is small and not perfect, but maybe someone will find it useful.
Before this version, every widget was a system window. Version 2.0 moved to graphics widgets within a single system window.
Here are the release notes:
Features
Moved to graphics widgets within a single system window
RkSpinBox
Fixes
Fixes related to potential crashes when closing the UI (RkTimer destruction, destruction of Widgets)
Fixes related to invalidating the actions list container when removing the current action from the action callback
Improvements
Improvements to RkPoint, RkSize, and other interface elements
