I'm building a video player that looks a lot like the one at hulu.com. The video scrub bar at the bottom should look something like this: http://img.skitch.com/20081120-fkmhfssnkma2f9gps8eggbdikt.jpg
I also need to be able to draw lines at various parts of the scrub bar that represent comments. Should I extend HSlider for this? Or would I be better off extending directly from UIComponent?