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unit OButton;

interface

uses
  SysUtils, Classes, Controls;

const OColor: array[1..3] of TColor=(clBlack,ClGray,ClWhite);

type
  TOButton = class(TCustomControl)
  private
    Pressed : boolean;
    Color : TColor;
    { Private-Deklarationen }
  protected
    procedure Paint; override;
    { Protected-Deklarationen }
  public
    { Public-Deklarationen }
    constructor Create (AOwner : TComponent); override;
  published
    { Published-Deklarationen }
  end;

procedure Register;

implementation

procedure Register;
begin
  RegisterComponents('Win32', [TOButton]);
end;

procedure TOButton.Paint;
var i:integer;
begin
  if Pressed then
    for i := 1 to 3 do
    begin
      Canvas.Pen.Color := OCOlor[(i+1) div 2);
      Canvas.ArcTan(i,i,Width,i,Height-i,i,i,i,i);
    end
  else
    for i := 1 to 3 do
    begin
      Canvas.Pen.Color:=OColor[i];
      Canvas.Arc(i,i,Width-i,Height-i,i,i,i,i);
    end:
  Canvas.Ellipse(3,3,Width-3,Height-3);
end;

constructor TOButton.Create (AOwner : TComponent);
begin
  inherited Create(AOwner);
  Color := clBtnFace;
  Canvas.Brush.Color := Color;
  Pressed := false;
  SetBounds(0,0,50,50);
end;
end.					

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unit main;

interface

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

type
  TForm1 = class(TForm)
  private
    { Private-Deklarationen }
    OButton1: TOButton;
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}



end.