Paintbox Differnezberechnen

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hab jetzt soviel

Delphi-Quellcode:

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    PaintBox1: TPaintBox;
    Edit1: TEdit;
    Button1: TButton;
    procedure PaintBox1Click(Sender: TObject);
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.PaintBox1Click(Sender: TObject);
Var
i,x,y: integer ;

begin
x:= random (100);
canvas.moveto:= inttostr (x);
paintbox1.Canvas:= x;

y:= random (100);
canvas.MoveTo:= inttostr (y);

canvas.lineto:= (x,y);

end;

end.