Contoh Latihan 1

1. Buatlah program seperti berikut :



Komponen/Objek yang digunakan dan pengaturan propertiesnya adalah :



Masukkan perintah-perintah pada kejadian/event disetiap komponen di bawah ini.


Program lengkapnya adalah :
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, ExtCtrls;
type
TForm1 = class(TForm)
btJumlah: TButton;
btKurang: TButton;
Label1: TLabel;
Label2: TLabel;
edAng1: TEdit;
edAng2: TEdit;
btBagi: TButton;
btKali: TButton;
Panel1: TPanel;
Label3: TLabel;
edHasil: TEdit;
Panel2: TPanel;
LMerah: TLabel;
LBiru: TLabel;
LHijau: TLabel;
procedure btJumlahClick(Sender: TObject);
procedure btKurangClick(Sender: TObject);
procedure btKaliClick(Sender: TObject);
procedure btBagiClick(Sender: TObject);
procedure FormMouseMove(Sender: TObject; Shift: TShiftState; X,
Y: Integer);
procedure LMerahMouseMove(Sender: TObject; Shift: TShiftState; X,
Y: Integer);
procedure LBiruMouseMove(Sender: TObject; Shift: TShiftState; X,
Y: Integer);
procedure LHijauMouseMove(Sender: TObject; Shift: TShiftState; X,
Y: Integer);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}

procedure TForm1.btJumlahClick(Sender: TObject);
var a,b : integer;
begin
a := StrToInt(edAng1.Text);
b := StrToInt(edAng2.Text);
edHasil.Text := IntToStr(a + b);
end;
procedure TForm1.btKurangClick(Sender: TObject);
var a,b : integer;
begin
a := StrToInt(edAng1.Text);
b := StrToInt(edAng2.Text);
edHasil.Text := IntToStr(a - b);

procedure TForm1.btBagiClick(Sender: TObject);
var a,b : integer;
begin
a := StrToInt(edAng1.Text);
b := StrToInt(edAng2.Text);
edHasil.Text := FloatToStr(a / b);
end;
procedure TForm1.FormMouseMove(Sender: TObject; Shift: TShiftState; X,
Y: Integer);
begin
Form1.Color := clBtnFace;
end;
procedure TForm1.LMerahMouseMove(Sender: TObject; Shift: TShiftState; X,
Y: Integer);
begin
Form1.Color := clRed;
end;
procedure TForm1.LBiruMouseMove(Sender: TObject; Shift: TShiftState; X,
Y: Integer);
begin
Form1.Color := clBlue;
end;
procedure TForm1.LHijauMouseMove(Sender: TObject; Shift: TShiftState; X,
Y: Integer);
begin
Form1.Color := clGreen;
end;