[gnome-chess/mcatanzaro/gtk4] progress

[Michael Catanzaro <mcatanzaro src gnome org>]

commit e6baf6ddc43d670a59024f394061c98e7a27add4
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Wed Dec 23 19:18:51 2020 -0600

    progress

 src/gnome-chess.vala | 24 ++++++------------------
 1 file changed, 6 insertions(+), 18 deletions(-)
---
diff --git a/src/gnome-chess.vala b/src/gnome-chess.vala
index 69fdc63..156fa1b 100644
--- a/src/gnome-chess.vala
+++ b/src/gnome-chess.vala
@@ -2329,7 +2329,7 @@ Copyright © 2015–2016 Sahil Sareen""";
     {
         if (about_dialog != null)
         {
-            about_dialog.present ();
+            about_dialog.show ();
             return;
         }
 
@@ -2346,15 +2346,12 @@ Copyright © 2015–2016 Sahil Sareen""";
         about_dialog.translator_credits = _("translator-credits");
         about_dialog.website = "https://wiki.gnome.org/Apps/Chess";;
         about_dialog.logo_icon_name = "org.gnome.Chess";
-#if 0
-        about_dialog.response.connect (about_response_cb);
+        about_dialog.hide_on_close = true;
         about_dialog.show ();
-#endif
     }
 
     private void run_invalid_pgn_dialog ()
     {
-#if 0
         var invalid_pgn_dialog = new MessageDialog (window,
                                                     DialogFlags.MODAL,
                                                     MessageType.ERROR,
@@ -2362,14 +2359,12 @@ Copyright © 2015–2016 Sahil Sareen""";
                                                     _("This does not look like a valid PGN game."));
         invalid_pgn_dialog.add_button (_("_OK"), ResponseType.OK);
 
-        invalid_pgn_dialog.run ();
-        invalid_pgn_dialog.destroy ();
-#endif
+        invalid_pgn_dialog.response.connect (() => invalid_pgn_dialog.destroy ());
+        invalid_pgn_dialog.show ();
     }
 
     private void run_invalid_move_dialog (string error_message)
     {
-#if 0
         var invalid_move_dialog = new MessageDialog (window,
                                                      DialogFlags.MODAL,
                                                      MessageType.ERROR,
@@ -2377,15 +2372,8 @@ Copyright © 2015–2016 Sahil Sareen""";
                                                      error_message);
         invalid_move_dialog.add_button (_("_OK"), ResponseType.OK);
 
-        invalid_move_dialog.run ();
-        invalid_move_dialog.destroy ();
-#endif
-    }
-
-    private void about_response_cb (int response_id)
-    {
-        about_dialog.destroy ();
-        about_dialog = null;
+        invalid_move_dialog.response.connect (() => invalid_move_dialog.destroy ());
+        invalid_move_dialog.show ();
     }
 
     private void update_pgn_time_remaining ()