I need a way to determine if a nsIDOMWindow has a vertical scrollbar from C++. Actually, I'm trying to find the "outermost" frame with a vertical scrollbar by iterating over each nsIDOMWindow within a nsIWebBrowser. I've tried getting the nsIDOMBarProp via nsIDOMWindow::GetScrollBars, but I've since discovered that nsIDOMBarProp::GetVisible returns NS_ERROR_FAILURE everytime... which makes the whole nsIDOMBarProp pretty much useless. Any help or pointers would be appreciated. -=- John
