historyComboGD.horizontalSpan = 2;
historyCombo.setLayoutData(historyComboGD);
historyCombo.setItems(mapcalcHistoryItems);
historyCombo.setData(items2ValuesMap);
historyCombo.select(0);
historyCombo.addSelectionListener(new SelectionAdapter(){
public void widgetSelected( SelectionEvent e ) {
int selectionIndex = historyCombo.getSelectionIndex();
String item = historyCombo.getItem(selectionIndex);
@SuppressWarnings("unchecked")
HashMap<String, String> descriptionsMap = (HashMap<String, String>) historyCombo.getData();