unit2.~pas

来自「《Delphi实用程序100例》配套书源码盘」· ~PAS 代码 · 共 57 行

unit Unit2;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls;

type
  TForm2 = class(TForm)
    Button1: TButton;
    ListBox1: TListBox;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form2: TForm2;

implementation

uses Unit1;

{$R *.DFM}

procedure TForm2.Button1Click(Sender: TObject);
var
 I: Integer;
begin
  ListBox1.Items.Clear;
  for I := 0 to ComponentCount - 1 do
    ListBox1.Items.Add (Components[I].Name);
end;


procedure TForm2.Button2Click(Sender: TObject);
var
  AComp: TComponent;
begin
//  if Assigned (Label1) then
  begin
      // change parent
      Label1.Parent := Form1;
      // change owner
      AComp := Label1;
      RemoveComponent (AComp);
      Form1.InsertComponent (AComp);
  end;
end;

end.