How to prevent the selection of a specific color in a component TColorBox?

Question

Does anyone know how to remove a certain color from the drop-down list of TColorBox?

Answer 1

The prefilled ones you can delete from the Items collection. For example:

procedure TForm31.Button1Click(Sender: TObject);
var
  Index: Integer;
begin
  Index := ColorBox1.Items.IndexOfObject(TObject(clGreen));
  if Index <> -1 then
    ColorBox1.Items.Delete(Index);
end;