到底哪里错了啊？

Question

unit zqd;interfaceuses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, DB, ADODB, Grids, DBGrids, StdCtrls;type
  TForm1 = class(TForm)
    DBGrid1: TDBGrid;
    DataSource1: TDataSource;
    ADOQuery1: TADOQuery;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;var
  Form1: TForm1;implementation
uses Unit2;
{$R *.dfm}procedure TForm1.Button1Click(Sender: TObject);
begin
      try
          Form2 := TForm2.Create(Nil);
          Form2.Show;
      except
          Form2.Free;
end;end.
这是Unit1里的代码！
我想button1click弹出子窗体
哪错了啊？还是窗体的属性设置的哪不对?窗体和子窗体的属性该怎么设置啊？

Answer 1

Form2 := TForm2.Create(Application);

Answer 2

try
          Form2 := TForm2.Create(Nil);
          Form2.Show;
      except
          Form2.Free;
      end;

Answer 3

try
...
except
...
end;//你是不是没有END啊？

Answer 4

wo KAO 妖哥又抢先一秒。呵呵呵呵