unit InfoForm;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  Spin, ComCtrls, ExtCtrls, Mask, Buttons, StdCtrls;

type
  TForm1 = class(TForm)
    ListBox1: TListBox;
    Label1: TLabel;
    Edit1: TEdit;
    Label2: TLabel;
    Label3: TLabel;
    Shape1: TShape;
    Label4: TLabel;
    Edit2: TEdit;
    Memo1: TMemo;
    Button1: TButton;
    CheckBox1: TCheckBox;
    RadioButton1: TRadioButton;
    ListBox2: TListBox;
    ComboBox1: TComboBox;
    ScrollBar1: TScrollBar;
    GroupBox1: TGroupBox;
    RadioGroup1: TRadioGroup;
    Panel1: TPanel;
    BitBtn1: TBitBtn;
    MaskEdit1: TMaskEdit;
    Image1: TImage;
    Shape2: TShape;
    ScrollBox1: TScrollBox;
    TrackBar1: TTrackBar;
    HeaderControl1: THeaderControl;
    SpinEdit1: TSpinEdit;
    procedure Shape1DragDrop(Sender, Source: TObject; X, Y: Integer);
    procedure Shape1DragOver(Sender, Source: TObject; X, Y: Integer;
      State: TDragState; var Accept: Boolean);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Shape1DragOver(Sender, Source: TObject; X, Y: Integer;
  State: TDragState; var Accept: Boolean);
begin
  Accept := True;
end;

procedure TForm1.Shape1DragDrop(Sender, Source: TObject; X, Y: Integer);
var
  MyClass: TClass;
begin
  Edit1.Text := Format ('Name: %s - Size: %d bytes',
    [Source.ClassName, Source.InstanceSize]);
  MyClass := Source.ClassType;
  with Listbox1.Items do
  begin
    Clear;
    while MyClass.ClassParent <> nil do
    begin
      MyClass := MyClass.ClassParent;
      Add (MyClass.ClassName);
    end;
  end;
end;

end.