[dr. F.I.N.]

Устанавливаем канву для панели

Код:

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Panel1: TPanel;
    Button1: TButton;
    procedure FormCreate(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  CC: TControlCanvas;
implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
  CC := TControlCanvas.Create;
  CC.Control := Panel1;
end;

procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
  CC.Free;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  CC.Rectangle(10, 10, 50, 50);
end;

end.