[gtk/kill-hierarchy-changed: 2/14] drag dest: Stop using ::hierarchy-changed

[Matthias Clasen <matthiasc src gnome org>]

commit ddb52a5b5eb66f7839045fff2129e3581606df3d
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Feb 23 00:30:32 2019 -0500

    drag dest: Stop using ::hierarchy-changed
    
    Use notify::root instead.

 gtk/gtkdragdest.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtkdragdest.c b/gtk/gtkdragdest.c
index ce6040ad2b..b2dcd78ef2 100644
--- a/gtk/gtkdragdest.c
+++ b/gtk/gtkdragdest.c
@@ -41,8 +41,9 @@ gtk_drag_dest_realized (GtkWidget *widget)
 }
 
 static void
-gtk_drag_dest_hierarchy_changed (GtkWidget *widget,
-                                 GtkWidget *previous_toplevel)
+gtk_drag_dest_hierarchy_changed (GtkWidget  *widget,
+                                 GParamSpec *pspec,
+                                 gpointer    data)
 {
   GtkWidget *toplevel = gtk_widget_get_toplevel (widget);
 
@@ -85,7 +86,7 @@ gtk_drag_dest_set_internal (GtkWidget       *widget,
 
   g_signal_connect (widget, "realize",
                     G_CALLBACK (gtk_drag_dest_realized), site);
-  g_signal_connect (widget, "hierarchy-changed",
+  g_signal_connect (widget, "notify::root",
                     G_CALLBACK (gtk_drag_dest_hierarchy_changed), site);
 
   g_object_set_data_full (G_OBJECT (widget), I_("gtk-drag-dest"),