mini paint->rechtecke zeichnen

[Say1k]

hi

mein momentaner quelltext steht unten und ich habe jezt einen button zum rechtecke zeichnen gemacht

was muss ich wo eingeben damit das funktioniert?
oder habe ich das falsch angefangen?

Delphi-Quellcode:

unit mMiniPaint11;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, Buttons, ExtCtrls, Menus, ComCtrls, Tabs;

type
  TForm1 = class(TForm)
    PnlWerkzeug: TPanel;
    BitBtnFrei: TBitBtn;
    BitBtnPunkt: TBitBtn;
    Panel1: TPanel;
    Label1: TLabel;
    Label2: TLabel;
    Edit1: TEdit;
    Label3: TLabel;
    Label4: TLabel;
    Label5: TLabel;
    Label6: TLabel;
    Label7: TLabel;
    Button1: TButton;
    MainMenu1: TMainMenu;
    Men1: TMenuItem;
    Neu1: TMenuItem;
    Schlieen1: TMenuItem;
    BitBtn1: TBitBtn;
    Label8: TLabel;
    Label9: TLabel;
    Label10: TLabel;
    DateTimePicker1: TDateTimePicker;
    procedure BitBtnFreiClick(Sender: TObject);
    procedure BitBtnPunktClick(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure FormMouseUp(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure FormMouseMove(Sender: TObject; Shift: TShiftState; X,
      Y: Integer);
    procedure FormMouseDown(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure Edit1Change(Sender: TObject);
    procedure Label4Click(Sender: TObject);
    procedure Label5Click(Sender: TObject);
    procedure Label6Click(Sender: TObject);
    procedure Label7Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Neu1Click(Sender: TObject);
    procedure Label9Click(Sender: TObject);
    procedure Label10Click(Sender: TObject);
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;
  Status, Druecken: Boolean;
  XPos , YPos , startx , starty , endex , endey : Integer;
  gros : Integer;

implementation

{$R *.DFM}



procedure TForm1.BitBtnFreiClick(Sender: TObject);
begin
  Label2.caption := 'Freihand';
  Status:=False;
  Druecken:=false;
end;

procedure TForm1.BitBtnPunktClick(Sender: TObject);
begin
  Label2.caption := 'Punkt';
  Druecken:=False;
  Status:=True;
end;


procedure TForm1.FormCreate(Sender: TObject);
begin
  Status := False;
  Druecken := False;
  Label2.Caption := 'Freihand';
  Form1.Canvas.Create;
  
end;


procedure TForm1.FormMouseDown(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
begin
  If Status = False
  Then
    Begin
      Druecken := True;
      XPos := X;
      YPos := Y;
    End;
end;

procedure TForm1.FormMouseUp(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
begin
  if Status = False
  Then
  begin
    Druecken := False
  end
  else
    Begin
      form1.Canvas.brush.color := form1.canvas.pen.color;
      Form1.Canvas.Ellipse(X-2-gros, Y-2-gros, X +2+gros, Y +2+gros);
      Form1.Canvas.Brush.Color := clWhite;
    End;
end;

procedure TForm1.FormMouseMove(Sender: TObject; Shift: TShiftState; X,
  Y: Integer);
begin
  if Druecken = True
  Then
  Begin
    Form1.canvas.pen.width := gros;
    Form1.Canvas.MoveTo(XPos, YPos);
    XPos := X;
    YPos := Y;
    Form1.Canvas.LineTo(XPos, YPos);
  End;
end;


procedure TForm1.Edit1Change(Sender: TObject);
begin
  gros := 1;
  if edit1.Text = '0' then
  begin
  form1.font.color := clblack;
  label8.hide;
  gros := 0;
  end
  else
  if edit1.Text = '1' then
  begin
  form1.font.color := clblack;
  label8.hide;
  gros := 1;
  end
  else
  if edit1.Text = '2' then
  begin
  form1.font.color := clblack;
  label8.hide;
  gros := 2;
  end
  else
  if edit1.Text = '3' then
  begin
  form1.font.color := clblack;
  label8.hide;
  gros := 3;
  end
  else
  if edit1.Text = '4' then
  begin
  form1.font.color := clblack;
  label8.hide;
  gros := 4;
  end
  else
  if edit1.Text = '5' then
  begin
  form1.font.color := clblack;
  label8.hide;
  gros := 5;
  end
  else
  if edit1.Text = '6' then
  begin
  form1.font.color := clblack;
  label8.hide;
  gros := 6;
  end
  else
  if edit1.Text = '7' then
  begin
  form1.font.color := clblack;
  label8.hide;
  gros := 7;
  end
  else
  if edit1.Text = '8' then
  begin
  form1.font.color := clblack;
  label8.hide;
  gros := 8;
  end
  else
  if edit1.Text = '9' then
  begin
  form1.font.color := clblack;
  label8.hide;
  gros := 9;
  end
  else
  if edit1.Text = '10' then
  begin
  form1.font.color := clblack;
  label8.hide;
  gros := 10;
  end
  else
  begin
  form1.font.color := clred;
  Label8.show;
  Label8.caption := 'Fehler!';

  end;
end;


procedure TForm1.Label4Click(Sender: TObject);
begin
      Form1.Canvas.Pen.color := clblue;
      Form1.Canvas.Brush.Color := clblue;
end;

procedure TForm1.Label5Click(Sender: TObject);
begin
      Form1.Canvas.Pen.color := clred;
      Form1.Canvas.Brush.Color := clred;
end;

procedure TForm1.Label6Click(Sender: TObject);
begin
      Form1.Canvas.Pen.color := clgreen;
      Form1.Canvas.Brush.Color := clgreen;
end;

procedure TForm1.Label7Click(Sender: TObject);
begin
      Form1.Canvas.Pen.color := clblack;
      Form1.Canvas.Brush.Color := clblack;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  Form1.canvas.rectangle (-1,-1,9999,9999);
end;

procedure TForm1.Neu1Click(Sender: TObject);
begin
  Form1.Canvas.Brush.Color := clwhite;
  Form1.canvas.rectangle (-100,-100,9999,9999);
  Form1.Canvas.Brush.Color := clwhite;
end;

procedure TForm1.Label9Click(Sender: TObject);
begin
      Form1.Canvas.Pen.color := clyellow;
      Form1.Canvas.Brush.Color := clyellow;
end;

procedure TForm1.Label10Click(Sender: TObject);
begin
      Form1.Canvas.Pen.color := clwhite;
      Form1.Canvas.Brush.Color := clwhite;
end;

end.