This is an implementation of the Dear ImGui library.
See full original documentation here: https://pthom.github.io/imgui_manual_online/manual/imgui_manual.html
To use Dear ImGui in your project you need to add the ImGui plugin and call require like so:
This is a brand new plugin in Gideros Studio so it may take some time to document it thoroughly.
In the meantime, the author's GitHub is the best place to get info regarding Dear ImGui Gideros functions.
Of course, Gideros Wiki is here to help as well. You will find below some Dear ImGui examples implemented in Gideros Studio. ImGui_Examples