public void renderCComboFilterBoxesInTable(Table table) {

    for (int i = 0; i < columns.length; i++) {

        TableEditor editor = new TableEditor(table);
        CCombo combo = new CCombo(table, SWT.NONE);

        HashSet<String> setStrings = new HashSet<String>();

        for (int j = 0; j < table.getItems().length; j++) {

            setStrings.add(table.getItems()[j].getText(i));
        }

        combo.setItems(setStrings.toArray(new String[0]));

        combo.setVisibleItemCount(setStrings.size() - 1);

        editor.grabHorizontal = true;
        editor.setEditor(combo, table.getItems()[0], i);
    }

tableViewerTrades.refresh();
        tableViewerTrades.getTable().redraw();
        editor.layout();
        combo.update();
        combo.redraw();