콤보박스를 하나 올려놓고 이벤트 핸들러를 폼과 콤보박스에 해당되는 이벤트를 만들었습니다. 그런데 에러가 생기는데 왜 그런건지요?


unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    ComboBox1: TComboBox;
    procedure FormCreate(Sender: TObject);
    procedure ComboBox1DrawItem(Control: TWinControl; Index: Integer;
      Rect: TRect; State: TOwnerDrawState);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
  ComboBox1.Items.Add(IntToStr(clRed));
  ComboBox1.Items.Add(IntToStr(clFuchsia));
  ComboBox1.Items.Add(IntToStr(clBlue));
  ComboBox1.Items.Add(IntToStr(clGreen));
  ComboBox1.Items.Add(IntToStr(clYellow));
end;


procedure TForm1.ComboBox1DrawItem(Control: TWinControl; Index: Integer;
  Rect: TRect; State: TOwnerDrawState);

with Control as TComboBox,Canvas do

begin
    Brush.Color := clWhite;
    FillRect(Rect);
    // then reduce it and fill it with the color
    InflateRect(Rect,-2,-2);
    Brush.Color := StrToInt(Items[Index]);
    FillRect(Rect);
end;

end.