Locking the screen orientation on a QtWRT widget?
I'd like to know this too. As a workaround I found out that when you activate the sensors API then app is locked into a landscape mode. I did this in my Labyrinth game, "ChromeBall":http://www.substanceofcode.com/2010/08/21/labyrinth-game-with-w3c-widget-accelerometer-api-and-nokia-n900/
No, in the preview release, we enabled the orientation by default.