cannot create a long tree

["SirVlad" <sirvlad inbox ru>]

Hello!
I am writing an application in GTK and I need long trees, 20000 nodes and maybe more. Is it a problem? When I come to about a thousand or so the long subtree does not appear in the scrolled window, only its parent. This is my code:

static GtkWidget *drawTree(unsigned int treelen)
{
    GtkWidget *tree;
    GtkWidget *subTree;
    GtkWidget *treeItem;
    int i;

    tree = gtk_tree_new();

    treeItem = gtk_tree_item_new_with_label("One");
    gtk_tree_append(GTK_TREE(tree), treeItem);
    subTree=gtk_tree_new();
    gtk_tree_item_set_subtree(GTK_TREE_ITEM(treeItem), subTree);
    g_print("drawTree: treelen = %d\n", treelen);
    for (i=0; i<treelen; i++)
    {
        treeItem=gtk_tree_item_new_with_label("Itemname");
        gtk_tree_append(GTK_TREE(subTree), treeItem);
        gtk_widget_show(treeItem);
    }
    gtk_widget_show_all(subTree);
    gtk_widget_show_all(tree);

    return(tree);
}

And I get only + "One" and that's all... If treelen is about 500 everything is ok. Maybe the problem is with the container which holds tree?

Thank you very much for any answer,
Cheers,
--
roy.

There is nothing so fatiguing as the eternal hanging on of an uncompleted task. (C)