Remove use of gdk_drawable_get_{screen, display}

The gdk_drawable_get_screen and gdk_drawable_get_display
methods don't exist in GDK3. Fortunately, even on GTK2
they are not required - we can call the equivalent
gtk_widget_get_screen/gtk_widget_get_display methods
which have existed since GTK 2.2
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>
Message-id: 1361805646-6425-3-git-send-email-berrange@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

ui/gtk.c

@@ -501,9 +501,8 @@ static gboolean gd_motion_event(GtkWidget *widget, GdkEventMotion *motion,
     }
 
     if (!kbd_mouse_is_absolute() && gd_is_grab_active(s)) {
-        GdkDrawable *drawable = GDK_DRAWABLE(gtk_widget_get_window(s->drawing_area));
-        GdkDisplay *display = gdk_drawable_get_display(drawable);
-        GdkScreen *screen = gdk_drawable_get_screen(drawable);
+        GdkDisplay *display = gtk_widget_get_display(s->drawing_area);
+        GdkScreen *screen = gtk_widget_get_screen(s->drawing_area);
         int x = (int)motion->x_root;
         int y = (int)motion->y_root;