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


- tooltip
- self:Resize(), OnResize
- enter,leave (mouse events)
- clicked controls should get MouseMove+MouseRelease event even if the mouse doesn't hover the control
- 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


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