To get the selected item of TRadioGroup

[asdf]

sp1, sp2, sp3 : string;

RadioGroup1.Items.Add(sp1);
RadioGroup1.Items.Add(sp2);
RadioGroup1.Items.Add(sp3);

How can we get the caption of the selected item?

[theo]

Code: Pascal  [Select][+][-]

1. var idx:integer;
2. begin
3.  idx:=RadioGroup1.ItemIndex;
4.  if idx>-1 then Caption:=RadioGroup1.Items[idx];
5. end;
6.