hbox.pack_end(button, FALSE, FALSE, 0);
button.connect( "clicked",
G_CALLBACK( dialog_button_callback ), GINT_TO_POINTER( IDCANCEL ) );
gtk_widget_set_size_request( button, 60, -1 );
button = ui::Button( "OK" );
hbox.pack_end(button, FALSE, FALSE, 0);
button.connect( "clicked",
G_CALLBACK( dialog_button_callback ), GINT_TO_POINTER( IDCANCEL ) );
gtk_widget_set_size_request( button, 60, -1 );
button = ui::Button( "OK" );