I wish to create a tooltip style control to show information about items
being dragged in a tree view.

My problem is that I cannot capture the mouse in the treeview ( and hence
have the tooltip follow the mouse when it moves outside the treeview control
), presumably because once the tooltip is shown it becomes the foreground
window.

Any possible solutions would be welcome ( I have thought about wrapping the
Win32 tracking tooltip, but I require more sophisticated tooltip content than
just text ).

Thanks,
Andrew.