Scrolling a Tree View before it's realized

[Attilio Fiandrotti <attilio fiandrotti gmail com>]

Hi

In an application i add many items to a ListStore and make it scroll on 
the fly to the default option row,  like this

for (i = 0; i < NUMBER_OF_ITEMS; i++) {
    gtk_list_store_append (store, &iter);
    gtk_list_store_set (store, &iter, MY_COLUMN, mystrings[i], -1);
    if (default_option_index == i) {
        path = gtk_tree_model_get_path(model, &iter);
        gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW(view), path, NULL, 
FALSE, 0.5, 0);
        gtk_tree_view_set_cursor (GTK_TREE_VIEW(view), path, NULL, FALSE);
        gtk_tree_path_free (path);
    }
}

Later i pack the TreeView into proper box hierarchy and eventually show 
the gtkwindow and within contained widgets.

Now, scrolling works inconsistently, as the row gets indeed selected but 
the scrolling is only "partial".
I wonder if this is because i'm attempting to scroll to a row in a 
treeview which has not been realized yet.
In the case, does performing scroll after widget realization, from 
within a proper callback, will solve this issue?

thanks

Attilio