Re: [gtkmm] leave_notify in VBox

[Paul Davis <paul linuxaudiosystems com>]

>Some widget has it's own Gdk window some not. Obviously Gdk events do not
>applicable to those without own window. There is Gtk::Widget::has_no_window
>method, which can tell you if your particular widget has window or not.
>If it don't you can use parent widget's window to achieve your task, or you
>can place your widget inside Gtk::EventBox and use EventBox's window.

and as a general note, most "layout" widgets (boxes, tables, etc) have
no window of their own.