#include <gtk/gtk.h>

gint
main (gint argc, gchar *argv[])
{
  GtkWidget *window, *label;

  gtk_init (&argc, &argv);

  window = g_object_new (GTK_TYPE_WINDOW,
                         NULL);
  label  = g_object_new (GTK_TYPE_LABEL,
                         "parent", window,
                         NULL);

  gtk_widget_show_all (GTK_WIDGET (window));

  while (1)
  {
    gtk_main_iteration_do (FALSE);
    gtk_label_set_label (GTK_LABEL (label), "a");
  }

  return 0;
}