#include <gtk/gtk.h>

static GtkWidget*
create_ui (void)
{
  GtkWidget *window, *align, *button;
  GdkColor color;

  gdk_color_parse ("#af0", &color);
  button = gtk_color_button_new ();
  gtk_color_button_set_color (GTK_COLOR_BUTTON (button), &color);

  align = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
  gtk_container_add (GTK_CONTAINER (align), button);

  gtk_widget_show_all (align);

  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  gtk_container_add (GTK_CONTAINER (window), align);
  gtk_window_set_default_size (GTK_WINDOW (window), 600, 400);

  g_signal_connect (window, "destroy",
                    G_CALLBACK (gtk_main_quit),
                    NULL);

  return window;
}

/*********************************************************************/

int
main (int   argc,
      char *argv[])
{
  GtkWidget *ui;

  gtk_init (&argc, &argv);

  ui = create_ui ();
  gtk_widget_show (ui);
  gtk_main ();

  return 0;
}