how to identify the konqueror main-window?

[Robert Linden]

Hello!

I'm trying to make automated screenshots of konqueror.
With konqueror version 2.2.2 I could identify the main-
window because it had "toplevel" in it's name as reported
by xwininfo. That doesn't seem to be the case anymore. 
Now there different window-IDs belonging to konqueror all
have just "konqueror" as their names. Do I need to parse/compare
the window-sizes or is there a cleaner/easier way to find
the main-window?

Thanks a lot & all the best,
rob