测试 Components 与 Controls 的区别

本例效果图:

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代码文件:

---

unit Unit1;



interface



uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs, StdCtrls, ExtCtrls;



type

  TForm1 = class(TForm)

    Panel1: TPanel;

    Edit1: TEdit;

    Button1: TButton;

    Memo1: TMemo;

    procedure Button1Click(Sender: TObject);

  end;



var

  Form1: TForm1;



implementation



{$R *.dfm}



procedure TForm1.Button1Click(Sender: TObject);

var

  i: Integer;

begin

  Memo1.Clear;



  Memo1.Lines.Add('窗体所属的 Components:');

  for i := 0 to Self.ComponentCount - 1 do

    Memo1.Lines.Add(Components[i].Name);



  Memo1.Lines.Add('');

  Memo1.Lines.Add('窗体所属的 Controls:');

  for i := 0 to Self.ControlCount - 1 do

    Memo1.Lines.Add(Controls[i].Name);

end;



end.


 
   

窗体文件:

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object Form1: TForm1

  Left = 0

  Top = 0

  Caption = 'Form1'

  ClientHeight = 175

  ClientWidth = 339

  Color = clBtnFace

  Font.Charset = DEFAULT_CHARSET

  Font.Color = clWindowText

  Font.Height = -11

  Font.Name = 'Tahoma'

  Font.Style = []

  OldCreateOrder = False

  PixelsPerInch = 96

  TextHeight = 13

  object Panel1: TPanel

    Left = 194

    Top = 8

    Width = 137

    Height = 113

    Caption = 'Panel1'

    TabOrder = 0

    object Edit1: TEdit

      Left = 16

      Top = 11

      Width = 81

      Height = 21

      TabOrder = 0

      Text = 'Edit1'

    end

  end

  object Button1: TButton

    Left = 224

    Top = 136

    Width = 75

    Height = 25

    Caption = 'Button1'

    TabOrder = 1

    OnClick = Button1Click

  end

  object Memo1: TMemo

    Left = 0

    Top = 0

    Width = 185

    Height = 175

    Align = alLeft

    Lines.Strings = (

      'Memo1')

    TabOrder = 2

    ExplicitHeight = 192

  end

end