Hi,

I'm trying to create a tree view which is resizable, but when the contents
are larger than the TreeView, there must come a scroll bar too. But the
width of the TreeView is fixed, and I can't resize it.

Here is the code to reproduce it:

<?php
/**
* Example Tree view GTK application
*/
class TreeExample extends GtkWindow
{
    /**
     * An large array containig all menu items
     *
     * @var array
     */
    private $menus;

    /**
     * Constructor, Initializes the window
     */
    public function __construct()
    {
        parent::__construct();

        $this ->  add($this -> build_gui());
        $this ->  connect_simple('destroy', array($this, 'quit'));
        $this ->  set_title('RSS Reader');
        $this ->  set_default_size(800, 600);
        $this ->  set_position(Gtk::WIN_POS_CENTER);
        $this ->  show_all();
    }

    /**
     * Sets up the main GUI
     * @return GtkVbox Container with menu, toolbar and the rest
     */
    protected function build_gui()
    {
        $vbox = new GtkVBox();

        $vbox ->  pack_start($this -> build_content(), true, true, 2);

        //
        // TODO: Add toolbar, and main content
        //

        return $vbox;
    }

    /**
     * Sets up the RSS content
     * @return GtkHBox Container with the RSS content
     */
    protected function build_content()
    {
        $hbox = new GtkHBox();
        $hbox ->  pack_start($this -> build_feed_tree(), false, false);
        $hbox ->  pack_start(new GtkVSeparator(), false, false, 2);

        return $hbox;
    }

    /**
     * Loads all feeds, and puts it in a GtkTreeStore object
     * @return GtkScrolledWindow
     */
    protected function build_feed_tree()
    {
        $tree_store = new GtkTreeStore(Gtk::TYPE_STRING, Gtk::TYPE_STRING);

        // Items to add into the tree view
        $feeds = array(
            'Feed Folder 1' =>  array(
                'Feed1' =>  'url',
                'Feed2' =>  'url',
            ),
            'Feed Folder 2' =>  array(
                'Sub Folder' =>  array(
                    'Feed 3' =>  'url',
                    'Feed 4' =>  'url'
                ),
                'Feed 5' =>  'url'
            )
        );

        $this ->  add_feeds_to_tree($tree_store, $feeds);

        // Building the TreeView
        $tree_view = new GtkTreeView($tree_store);
        $tree_column = new GtkTreeViewColumn('RSS Feeds', new
GtkCellRendererText(), 'text', 0);
        $tree_column ->  set_resizable(true);
        $tree_column ->  set_min_width(150);
        $tree_view ->  append_column($tree_column);

        // Put it in a scrolled window
        $scroll = new GtkScrolledWindow();
        $scroll ->  set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);

        $scroll ->  add($tree_view);

        return $scroll;
    }

    /**
     * Adds the feeds recursive to the tree
     * @param GtkTreeStore $tree_store The GtkTreeStoreO Object to add the
feeds to
     * @param array $feeds An array with feeds to add
     * @param GtkTreeIter $parent The parent of the feed
     */
    protected function add_feeds_to_tree(GtkTreeStore &$tree_store, array
$feeds, $parent = null)
    {
        $pos = 0;
        foreach($feeds as $name =>  $contents)
        {
            $row = $tree_store ->  insert($pos++, $parent);
            $tree_store ->  set($row, 0, $name);
            if(is_array($contents))
            {
                $this ->  add_feeds_to_tree($tree_store, $contents, $row);
            }
            else
            {
                $tree_store ->  set($row, 1, $contents);
            }
        }
    }

    /**
     * Event triggered when a menu item is clicked
     * @param string $name Name of the menu item
     */
    public function OnMenuActivated($name)
    {
        if(method_exists($this, $name))
        {
            $this ->  $name();
        }
    }

    /**
     * Quits the application
     */
    public function quit()
    {
        Gtk::main_quit();
    }
}

new TreeExample();
Gtk::main();

?> 

Does anybody know why I can't resize it, and how I can fix this?

Thanks in advance.
-- 
Lucas