Anpassungen an hello-gtk.c

20231005/hello-gtk.c

@@ -4,15 +4,26 @@ static void activate (GtkApplication *app, gpointer user_data)
 {
   GtkWidget *window = gtk_application_window_new (app);
   gtk_window_set_title (GTK_WINDOW (window), "Hello");
+  GtkWidget *vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 5);
+  gtk_window_set_child (GTK_WINDOW (window), vbox);
+  GtkWidget *label = gtk_label_new ("Hello, world!");
+  gtk_widget_set_margin_start (label, 15);
+  gtk_widget_set_margin_end (label, 15);
+  gtk_widget_set_margin_top (label, 10);
+  gtk_box_append (GTK_BOX (vbox), label);
   GtkWidget *button = gtk_button_new_with_label ("Quit");
+  gtk_widget_set_margin_start (button, 5);
+  gtk_widget_set_margin_end (button, 5);
+  gtk_widget_set_margin_top (button, 5);
+  gtk_widget_set_margin_bottom (button, 5);
   g_signal_connect_swapped (button, "clicked", G_CALLBACK (gtk_window_destroy), window);
-  gtk_window_set_child (GTK_WINDOW (window), button);
+  gtk_box_append (GTK_BOX (vbox), button);
   gtk_window_present (GTK_WINDOW (window));
 }
 
 int main (int argc, char **argv)
 {
-  GtkApplication *app = gtk_application_new ("org.gtk.example", G_APPLICATION_DEFAULT_FLAGS);
+  GtkApplication *app = gtk_application_new ("de.hs-bochum.cvh.hp.hello-gtk", G_APPLICATION_DEFAULT_FLAGS);
   g_signal_connect (app, "activate", G_CALLBACK (activate), NULL);
   int status = g_application_run (G_APPLICATION (app), argc, argv);
   g_object_unref (app);