測試 Components 與 Controls 的區別

本例:

代碼檔案:

unit Unit1;interfaceuses  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('表單所屬的 Components:');  for i := 0 to Self.ComponentCount - 1 do    Memo1.Lines.Add(Components[i].Name);  Memo1.Lines.Add('');  Memo1.Lines.Add('表單所屬的 Controls:');  for i := 0 to Self.ControlCount - 1 do    Memo1.Lines.Add(Controls[i].Name);end;end.

表單檔案:

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  endend