delphi怎么按照控件的左右顺序来遍历窗体中的每个控件

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

------解决方案--------------------
如果窗体上的控件都是 TWinControl继承下来的 下面的代码对你可能有帮助
 var

    P:TPoint;
wnd:Thandle;
vWinControl: TWinControl;
begin



   P := self.ClientToScreen(Point(x,y));

   wnd := WindowFromPoint(p);//
     if wnd<>0 then
     begin
          vWinControl := FindControl(wnd);


     end;

end;