Frage zur Komponentenerstellung

[DeddyH]

Ich habe das hier gerade mal schnell unter Delphi 5 getestet:

Delphi-Quellcode:

unit UnitNix;

interface

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

type
  TTabelle = class(TGraphicControl)
  private
  public
  protected
    procedure Paint; override;
  end;

  TForm1 = class(TForm)
    procedure FormCreate(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
  private
    { Private-Deklarationen }
    tab: TTabelle;
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TTabelle.Paint;
begin
  inherited;
  with Canvas do
  begin
    Pen.Color := clRed;  // nur mal so als bespiel
    MoveTo(0,0);
    LineTo(100,100);
  end;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  tab := TTabelle.Create(self);
  tab.Parent := self;
  tab.Left := 0;
  tab.Top := 0;
  tab.Width := 200;
  tab.Height := 200;
end;

procedure TForm1.FormDestroy(Sender: TObject);
begin
  FreeAndNil(tab);
end;

end.