unit testform; interface uses Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls,bitmapcheckbox, ExtCtrls; type TForm1 = class(TForm) Button1: TButton; cb: TBitmapCheckbox; procedure Button1Click(Sender: TObject); procedure cbClick(Sender: TObject); private { Private declarations } public { Public declarations } end; var Form1: TForm1; implementation {$R *.DFM} procedure TForm1.Button1Click(Sender: TObject); begin cb.top:=100; cb.left:=100; cb.width:=20; cb.color:=clblack; cb.caption:='Hello World'; cb.font.color:=clwhite; end; procedure TForm1.cbClick(Sender: TObject); begin beep; end; end.