examples: Check for error when loading file

People playing with those examples tend to mess up things, so it's
really really unhelpful if we don't do error checking.

1 files changed, 7 insertions, 1 deletions

diff --git a/examples/builder.c b/examples/builder.c
index a05646fdbe..3525a03a16 100644
--- a/examples/builder.c
+++ b/examples/builder.c
@@ -14,12 +14,18 @@ main (int   argc,
   GtkBuilder *builder;
   GObject *window;
   GObject *button;
+  GError *error = NULL;
 
   gtk_init (&argc, &argv);
 
   /* Construct a GtkBuilder instance and load our UI description */
   builder = gtk_builder_new ();
-  gtk_builder_add_from_file (builder, "builder.ui", NULL);
+  if (gtk_builder_add_from_file (builder, "builder.ui", &error) == 0)
+    {
+      g_printerr ("Error loading file: %s\n", error->message);
+      g_clear_error (&error);
+      return 1;
+    }
 
   /* Connect signal handlers to the constructed widgets. */
   window = gtk_builder_get_object (builder, "window");