[gnome-tetravex/arnaudb/wip/gtk4: 45/49] Adapt to Container disparition.

[Arnaud B. <arnaudb src gnome org>]

commit dd89da8aa9ca69a0df94032433df3bbc9221a833
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Tue Aug 4 16:03:30 2020 +0200

    Adapt to Container disparition.

 src/gnome-tetravex.vala | 12 ++++++------
 src/score-dialog.vala   |  2 +-
 2 files changed, 7 insertions(+), 7 deletions(-)
---
diff --git a/src/gnome-tetravex.vala b/src/gnome-tetravex.vala
index a25b8d2..455750e 100644
--- a/src/gnome-tetravex.vala
+++ b/src/gnome-tetravex.vala
@@ -350,8 +350,8 @@ private class Tetravex : Gtk.Application
 
         Box undo_redo_box = new Box (Orientation.HORIZONTAL, /* spacing */ 0);
         undo_redo_box.get_style_context ().add_class ("linked");
-        undo_redo_box.add (undo_button);
-        undo_redo_box.add (redo_button);
+        undo_redo_box.append (undo_button);
+        undo_redo_box.append (redo_button);
         undo_redo_box.show ();
 
         if (can_restore && !restore_on_start)
@@ -368,7 +368,7 @@ private class Tetravex : Gtk.Application
             restore_button.valign = Align.CENTER;
             restore_button.show ();
 
-            restore_stack.add (restore_button);
+            restore_button.insert_before (restore_stack, /* insert last */ null);
             restore_stack.set_visible_child (restore_button);
             restore_stack.visible = true;
             headerbar.pack_start (restore_stack);
@@ -390,7 +390,7 @@ private class Tetravex : Gtk.Application
         settings.bind ("theme", view, "theme-id", SettingsBindFlags.GET | SettingsBindFlags.NO_SENSITIVITY);
 
         Overlay overlay = new Overlay ();
-        overlay.add (view);
+        overlay.set_child (view);
         overlay.show ();
 
         score_overlay = new ScoreOverlay ();
@@ -468,10 +468,10 @@ private class Tetravex : Gtk.Application
         clock_box = new Box (Orientation.HORIZONTAL, /* spacing */ 8);
         Image image = new Image.from_icon_name ("preferences-system-time-symbolic");
         image.show ();
-        clock_box.add (image);
+        clock_box.append (image);
         clock_label = new Label ("");
         clock_label.show ();
-        clock_box.add (clock_label);
+        clock_box.append (clock_label);
         clock_box.halign = Align.CENTER;
         clock_box.valign = Align.BASELINE;
         clock_box.set_margin_top (20);
diff --git a/src/score-dialog.vala b/src/score-dialog.vala
index 8aa8738..f2ef72f 100644
--- a/src/score-dialog.vala
+++ b/src/score-dialog.vala
@@ -59,7 +59,7 @@ private class ScoreDialog : Dialog
         scroll.show ();
 
         Box content_area = get_content_area ();
-        content_area.add (scroll);
+        content_area.append (scroll);
 
         score_model = new Gtk.ListStore (3, typeof (string), typeof (string), typeof (int));