That reminds me -- is there a signal that can be used when mouse over mainwin titlebar?

["David C. Rankin" <drankinatty suddenlinkmail com>]

All,

  Thanks to the other "is there a signal?" question, that reminded me I have
been looking for a signal (or way) to detect when the user has the mouse over
the titlebar of the main window in an editor where I would like to activate a
tooltip showing the absolute path for the file in the currently focused
textview. I just cannot find a signal or event window scheme to do it --
probably because the main window titlebar is owned by the window manager and
not the application. But still, I see other editors that are capable of this.

  Is there any such signal, or something that can be used in conjunction with
the set_window_title call that would also provide a tooltip on mouseover I
could respond to?

-- 
David C. Rankin, J.D.,P.E.