von ComboBox abgeleitete Komponente

[KodeZwerg]

Delphi-Quellcode:

unit Unit1;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Vcl.Menus;

type
  TXComboBox = class(TComboBox)
    strict private
      FPopupMenu: TPopupMenu;
    public
      constructor Create(AOwner: TComponent); override;
    public
      property PopupMenu: TPopupMenu read FPopupMenu write FPopupMenu;
  end;

type
  TForm1 = class(TForm)
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
    FComboBox: TXComboBox;
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

constructor TXComboBox.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  Parent := TWinControl(AOwner);
  FPopupMenu := nil;
  Items.Add('Foo');
  Items.Add('Bar');
end;


procedure TForm1.FormCreate(Sender: TObject);
begin
  FComboBox := TXComboBox.Create(Self);
  FComboBox.Left := 10;
  FComboBox.Top := 10;
end;

end.

Eventuell so?