delphi如何按照控件的左右顺序来遍历窗体中的每个控件

delphi如何按照控件的左右顺序来遍历窗体中的每个控件
delphi默认是按照控件添加进窗体的顺序来遍历的,
有没有哪个属性能控制这个/??
object Form1: TForm1
  Left = 226
  Top = 153
  Width = 696
  Height = 480
  Caption = 'Form1'
  Color = clBtnFace
  Font.Charset = DEFAULT_CHARSET
  Font.Color = clWindowText
  Font.Height = -11
  Font.Name = 'MS Sans Serif'
  Font.Style = []
  Menu = MainMenu1
  OldCreateOrder = False
  PixelsPerInch = 96
  TextHeight = 13
    object Edit1: TEdit
    Left = 336
    Top = 128
    Width = 121
    Height = 21
    TabOrder = 2
    Text = 'Edit1'
  end
  object Button1: TButton
    Left = 208
    Top = 296
    Width = 75
    Height = 25
    Caption = 'Button1'
    TabOrder = 0
  end
  object Button2: TButton
    Left = 408
    Top = 272
    Width = 75
    Height = 25
    Caption = 'Button2'
    TabOrder = 1
    OnClick = Button2Click
  end

  object Edit2: TEdit
    Left = 368
    Top = 32
    Width = 121
    Height = 21
    TabOrder = 3
    Text = 'Edit2'
  end
  object Edit3: TEdit
    Left = 200
    Top = 64
    Width = 121
    Height = 21
    TabOrder = 4
    Text = 'Edit3'
  end
  object RadioButton1: TRadioButton
    Left = 128
    Top = 40
    Width = 113
    Height = 17
    Caption = 'RadioButton1'
    TabOrder = 5
  end
  object MainMenu1: TMainMenu
    Left = 232
    Top = 96
  end
end
、
Delphi是根据这里定义的次序进行加载的，所以此处Components[0]为Button1
如果控制焦点的话是TabOrder这个属性

以上代码对TLabel，TImage无效 对TPanel，TEdit有效
对无效的TLabel，TImage等放在TPanel容器里面，上面的代码就可以用了