Es geht, aber die Items müssen genügend Abstand haben:
Delphi-Quellcode:
procedure MultilineControl(theControl: TWinControl);
var
dwStyle: Longint;
begin
dwStyle := GetWindowLong(theControl.handle, GWL_STYLE) or BS_MULTILINE;
SetWindowLong(theControl.Handle, GWL_STYLE, dwStyle);
end;
var
i : Integer;
begin
for i := 0 to RadioGroup1.ControlCount-1 do
MultilineControl(RadioGroup1.Controls[i] as TWinControl);
RadioGroup1.Refresh;