Right now you have to make your own controls with whatever combination of Sprites, text box objects suits you. Since it's a bit repetitive and also window controls don't work in fullscreen, I've got vague plans in my head for button-sprites, textbox-sprites and so on, which are basically controls which draw with textures. Then you could customise their look for your game and have easy to use controls. Still, I don't think I'll have time for that until after 1.0, but it'd be a good one for a starting out plugin dev to give a go.