gmail style email completion

I’ve just implemented some gmail style email completion. As you type in a field, values are shown in a window. You can key UP or DOWN, or keep typing. Pressing ENTER selects highilghted value. You can enter multiple emails in one field and get help on each. However, in this case, the window is not modal, so the form below is painting itself. There are still some old widgets like Label and Field (perhaps button) that keep repainting redgarldess of whether changed. This overrides the non-modal window. I’ve just fixed field but putting a @repaint_required == true check in repaint. Also, i think its possible, that rcommandwindow does a repaint and panel update more often than required. its called in different ways, interactive and non-interactive. Need to look into that at some time.