onHeaderClick

                   /* Get the tableView component */
    TableView table = (TableView) this.getComponentByName("myTableView");

    /* Set the onHeaderClick event */
    table.setOnHeaderClick("onHeaderClick");
    ..

    /*  the method onHeaderClick has to be declared in the DynPage.

        Otherwise an exception is thrown ("method not found") when the

        user clicks on the header of the tableView.
    
        Declaring onHeaderClick: */
    public void onHeaderClick(Event event) {
        System.out.println("Header click");
    }