Midi窗体怎么显示在指定的panel当中

Midi窗体如何显示在指定的panel当中？
如题:
Form2.Parent   :=   Tform1.panel1
编译出错：Method   identifier   expected

[解决办法]
procedure Tfm_Main.FormOpenShow(TClass: TComponentClass;var Reference);
begin
if assigned(TForm(Reference)) then
begin
TForm(Reference).Close;
TForm(Reference).free;
end;
application.CreateForm(TClass,TForm(Reference));
TForm(Reference).Dock(Panel1,Panel1.ClientRect); //把窗体 放在panel上
TForm(Reference).Show;
end;

procedure Tfm_Main.cxButton10Click(Sender: TObject);
begin
FormOpenShow(TForm1,Form1);
end;