On Wed, 2018-09-26 at 18:52 -0500, David C. Rankin wrote:
> 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?

In the specific case of Client Side Decorations (CSD), like in Gnome,
applications can use GtkHeaderBar, where you can set a tooltip.

In Evince we do that for a similar use case you mention. A GtkHeaderBar
can have a title and subtitle. In the subtitle we present the filename
(basename), but you can get the full path through the tooltip.

Germán Poo-Caamaño
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