Just for the record I'd never do an embedded gui in html. Well maybe not never, but not until it's common. Sounds like a nightmare of layers and compatibility issues. If you run into a problem, where do you even start to look?

I've been doing straight opengl-es on my devices and like not being locked into a gui platform. It makes even more sense to do it this way when you've got external buttons as inputs, because you're not even able to use slots and signals, which is the most useful part of qt.