[gtk/hello-world-fixup] Update hello-world.c

[Matthias Clasen <matthiasc src gnome org>]

commit bda75577831a61523b072a33dda72a4fd4a1cb8a
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Jun 29 08:01:37 2021 -0400

    Update hello-world.c
    
    Simplify the code a bit and make the window
    match the existing screenshot.

 docs/reference/gtk/getting_started.md | 10 +++++-----
 examples/hello/hello-world.c          | 10 +++++-----
 2 files changed, 10 insertions(+), 10 deletions(-)
---
diff --git a/docs/reference/gtk/getting_started.md b/docs/reference/gtk/getting_started.md
index df0c968f75..0b1dcee503 100644
--- a/docs/reference/gtk/getting_started.md
+++ b/docs/reference/gtk/getting_started.md
@@ -161,19 +161,19 @@ activate (GtkApplication *app,
 {
   GtkWidget *window;
   GtkWidget *button;
-  GtkWidget *box;
 
   window = gtk_application_window_new (app);
   gtk_window_set_title (GTK_WINDOW (window), "Window");
   gtk_window_set_default_size (GTK_WINDOW (window), 200, 200);
 
-  box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
-  gtk_window_set_child (GTK_WINDOW (window), box);
-
   button = gtk_button_new_with_label ("Hello World");
+  gtk_widget_set_halign (button, GTK_ALIGN_CENTER);
+  gtk_widget_set_valign (button, GTK_ALIGN_CENTER);
+
   g_signal_connect (button, "clicked", G_CALLBACK (print_hello), NULL);
   g_signal_connect_swapped (button, "clicked", G_CALLBACK (gtk_window_destroy), window);
-  gtk_box_append (GTK_BOX (box), button);
+
+  gtk_window_set_child (GTK_WINDOW (window), button);
 
   gtk_widget_show (window);
 }
diff --git a/examples/hello/hello-world.c b/examples/hello/hello-world.c
index f4c058e978..a597a97573 100644
--- a/examples/hello/hello-world.c
+++ b/examples/hello/hello-world.c
@@ -13,19 +13,19 @@ activate (GtkApplication *app,
 {
   GtkWidget *window;
   GtkWidget *button;
-  GtkWidget *box;
 
   window = gtk_application_window_new (app);
   gtk_window_set_title (GTK_WINDOW (window), "Window");
   gtk_window_set_default_size (GTK_WINDOW (window), 200, 200);
 
-  box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
-  gtk_window_set_child (GTK_WINDOW (window), box);
-
   button = gtk_button_new_with_label ("Hello World");
+  gtk_widget_set_halign (button, GTK_ALIGN_CENTER);
+  gtk_widget_set_valign (button, GTK_ALIGN_CENTER);
+
   g_signal_connect (button, "clicked", G_CALLBACK (print_hello), NULL);
   g_signal_connect_swapped (button, "clicked", G_CALLBACK (gtk_window_destroy), window);
-  gtk_box_append (GTK_BOX (box), button);
+
+  gtk_window_set_child (GTK_WINDOW (window), button);
 
   gtk_widget_show (window);
 }