$title->set_justify(Gtk::JUSTIFY_CENTER);
$alignment = new GtkAlignment(0.5, 0, 0, 0);
$alignment->add($title);
$vbox->pack_start($alignment, 0, 0);
$vbox->pack_start(new GtkLabel(), 0, 0);
$hbox = new GtkHBox();
$hbox->pack_start(new GtkLabel("Search string: "), 0);
$hbox->pack_start($entry = new GtkEntry(), 0);
$hbox->pack_start($button_search = new GtkButton('Search'), 0);
$vbox->pack_start($hbox, 0);
$button_search->connect('clicked', 'on_search_button', $entry);
// note 1
// Create a new buffer and a new view to show the buffer.
$buffer = new GtkTextBuffer();
$view = new GtkTextView();
$view->set_buffer($buffer);
$view->modify_font(new PangoFontDescription("Verdana italic 14"));
$view->set_wrap_mode(Gtk::WRAP_WORD);
$scrolled_win = new GtkScrolledWindow();
$scrolled_win->set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
$vbox->pack_start($scrolled_win);
$scrolled_win->add($view);
$window->show_all();
Gtk::main();
function on_search_button($widget, $entry)
{
global $view, $buffer;
$search_str = $entry->get_text();
$start_iter = $buffer->get_start_iter();
// note 2
$match_start = $buffer->get_start_iter();
