#include <gtk/gtk.h>

static void button_clicked (GtkButton*, GtkWindow*);

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

  gtk_init (&argc, &argv);

  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  gtk_window_set_title (GTK_WINDOW (window), "Save a File");
  gtk_container_set_border_width (GTK_CONTAINER (window), 10);
  gtk_widget_set_size_request (window, 200, 100);

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

  button = gtk_button_new_with_label ("Save As ...");

  g_signal_connect (G_OBJECT (button), "clicked",
                    G_CALLBACK (button_clicked), 
                    (gpointer) window);

  gtk_container_add (GTK_CONTAINER (window), button);
  gtk_widget_show_all (window);

  gtk_main ();
  return 0;
}

/* Allow the user to enter a new file name and location for the file and
 * set the button to the text of the location. */
static void
button_clicked (GtkButton *button,
                GtkWindow *window)
{
  GtkWidget *dialog;
  gchar *filename;
  
  dialog = gtk_file_chooser_dialog_new ("Save File As ...", window,
                                        GTK_FILE_CHOOSER_ACTION_SAVE,
                                        GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
                                        GTK_STOCK_SAVE, GTK_RESPONSE_ACCEPT,
                                        NULL);

  gint result = gtk_dialog_run (GTK_DIALOG (dialog));
  if (result == GTK_RESPONSE_ACCEPT)
  {
    filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
    gtk_button_set_label (button, filename);
  }
  
  gtk_widget_destroy (dialog);
}