The hover to select functionality does not work properly on Windows - the first node is initially highlighted properly, but then goes all the way out to what appears to be the body element. It is also impossible to actually select the node as clicking does nothing. The highlight window is probably messing with our mouse events.
Created attachment 23685 [details]
I'm hoping I missed an easier way of doing this...
There is still a tendency for the highlight to get "stuck" at a larger, outer element, but it doesn't seem as bad as is in the tree current (but that could just be me). It's definitely something to fix in the future, but this at least gets it working on Windows.
Comment on attachment 23685 [details]
Clearing the review flag, I think the hover forwarding stuff is wrong, I'd like to into it some more.
If you just want all mouse events to pass through the overlay window as if it weren't there, try passing WS_EX_TRANSPARENT to CreateWindowEx.
Created attachment 23777 [details]
One line patch - I'm an idiot.
Comment on attachment 23777 [details]
Committed revision 36881.