Gtk3 Popover outside the window

Question

How can i make Popover appears outside application window like menu in gnome-shell panel? Or should i use another GTK widget?

Answer 1

This should be possible (at least on wayland). gtk_popover_set_constrain_to (GtkPopover *popover, GtkPopoverConstraint constraint); "GTK_POPOVER_CONSTRAINT_NONE"

and

gtk_popover_set_pointing_to (GtkPopover *popover, const GdkRectangle *rect);