I can only speak from early teen years looking at computer game UIs. It's way harder to make a UI work in "native" ways than it appears at first sight. Especial

I can only speak from early teen years looking at computer game UIs. It's way harder to make a UI work in "native" ways than it appears at first sight. Especially if you do very manual rendering instead of relying on float/clear stuff. There are reasons that many people are going more and more into the embed HTML-controls into native UIs direction. One example: Your own renderer will have to handle text selection, cursor movement, and mouse interaction in exactly the way the surrounding platform does. Including things like "I'd expect Ctrl+A to jump the the beginning of this textbox".