- consistenly check for self.visible
- fix fixedRatio 1 pixel jumping


- tooltip
- self:Resize(), OnResize
- enter,leave (mouse events)
- displaylists + RenderToTexture
- masks for HitTest (depending on linked textures-> alpha channel)
- more different window controls -> background textures
- use matrices for clientspace transformations
- mousewheel support
- theme & layout handler

- stackpanel in scrollpanel -> error [  97031] gl.CreateList: error(2) = [string "LuaUI/Widgets/chiligui/object.lua"]:304: attempt to index field 'parent' (a nil value)


controls:
- image
- combobox
- editbox
- finish textbox
- progressbar
- listbox