[Lazarus] Combobox with sorted list of unique items?

[Bart]

On Fri, Oct 12, 2018 at 2:30 PM Vojtěch Čihák via Lazarus
<lazarus at lists.lazarus-ide.org> wrote:
>
> I just tried TStringList(ComboBox1.Items).Duplicates:=dupIgnore; but it does not work for combo (in Qt4).

Override Insert and check if it is already in there?

Bart