I am currently re-writing the OpenGL Controls (and adding a few), if anyone is interested in helping either reply here or PM me for details.
I am looking more for functionality and structure with a bare bones rendering since mostly every game will have its own needs and wants for drawing the controls to match the style of the game.
Version 2.0 Classes:
BevelButton - NEW
Checkbox
Container (Floating Window) - NEW
Group Box - NEW
Listbox
PopupMenu
ProgressBar
ProgressWheel - NEW
PushButton (Expanded from Button)
RadioButton
ScrollBar - NEW
Separator - NEW
Slider
StaticText
TabPanal
TextArea
TextField
Up/Down Arrows - NEW