Jumat, 20 April 2012

Timer – Visual C++


Timer merupakan sebuah tool yang disediakan oleh visual c++ sebagai tool pengolah data yang berkaitan dengan waktu. Dalam menggunakan timer, kita harus mengaktifkannya terlebih dahulu dengan mengubah nilai properties “Enabled” nya menjadi “true”.
Selain mengatur properties enable nya, yang harus kita perhatikan jika kita menggunakan timer adalah pengaturan properties “interval” nya. Interval ini digunakan untuk mendefinisikan tunda waktu timer untuk menjalankan program yang ada didalam fungsi “timer_tick”. Misalnya kita atur interval timer adalah 1000 (nilai 1000 tersebut memiliki satuan waktu milidetik atau 1 detik), kemudian didalam fungsi timer_tick (fungsi yang akan kita jumpai jika kita double klik pada timer) kita buat sebuah program untuk menampilkan sebuah tulisan pada label, maka program menampilkan tulisan pada label tersebut akan dijalankan setiap satu detik sekali.
Untuk  lebih jelasnya, dibawah ini akan dijelaskan mengenai beberapa cara menggunakan timer pada visual c++ (GUI).

timer1->Interval = 1000;
Sintak diatas berfungsi untuk mendefinisikan nilai interval dari timer. Nilai interval tersebut dapat kita atur sesuai dengan keinginan.

timer1->Enabled = false;
Sintak diatas berfungsi untuk mengatur enable dari timer. Enable disini artinya adalah mengaktifkan atau menonaktifkan timer yang akan kita atur. Jika ingin mengaktifkan maka nilai enabled nya adalah “true” sedangkan untuk menonaktifkan adalah “false”.


Berikut ini merupakan contoh penggunaan timer pada sebuah aplikasi.



#pragma once

namespace timer {

       using namespace System;
       using namespace System::ComponentModel;
       using namespace System::Collections;
       using namespace System::Windows::Forms;
       using namespace System::Data;
       using namespace System::Drawing;

       /// <summary>
       /// Summary for Form1
       /// </summary>
       public ref class Form1 : public System::Windows::Forms::Form
       {
              int a, jam, menit, detik, jam1, men1, det1;

       public:
              Form1(void)
              {
                     InitializeComponent();
                     //
                     //TODO: Add the constructor code here
                     //
              }

       protected:
              /// <summary>
              /// Clean up any resources being used.
              /// </summary>
              ~Form1()
              {
                     if (components)
                     {
                           delete components;
                     }
              }
       private: System::Windows::Forms::Timer^  timer1;
       private: System::Windows::Forms::Button^  button1;
       private: System::Windows::Forms::Label^  label1;
       private: System::Windows::Forms::Label^  label2;
       private: System::Windows::Forms::Label^  label3;
       private: System::Windows::Forms::GroupBox^  groupBox1;
       private: System::Windows::Forms::RadioButton^  radioButton1;
       private: System::Windows::Forms::RadioButton^  radioButton2;
       private: System::Windows::Forms::GroupBox^  groupBox2;
       private: System::Windows::Forms::TextBox^  textBox1;
       private: System::Windows::Forms::Label^  label7;
       private: System::Windows::Forms::Button^  button2;
       private: System::Windows::Forms::Label^  label4;
       private: System::Windows::Forms::Label^  label5;
       private: System::Windows::Forms::Label^  label6;
       private: System::Windows::Forms::Label^  label8;
       private: System::Windows::Forms::RadioButton^  radioButton3;
       private: System::Windows::Forms::GroupBox^  groupBox3;
       private: System::Windows::Forms::TextBox^  textBox5;
       private: System::Windows::Forms::Label^  label13;
       private: System::Windows::Forms::TextBox^  textBox4;
       private: System::Windows::Forms::Label^  label12;
       private: System::Windows::Forms::TextBox^  textBox3;
       private: System::Windows::Forms::Label^  label11;
       private: System::Windows::Forms::Label^  label10;
       private: System::Windows::Forms::TextBox^  textBox2;
       private: System::Windows::Forms::Label^  label9;
       private: System::Windows::Forms::Button^  button3;
       protected:
       private: System::ComponentModel::IContainer^  components;

       private:
              /// <summary>
              /// Required designer variable.
              /// </summary>


#pragma region Windows Form Designer generated code
              /// <summary>
              /// Required method for Designer support - do not modify
              /// the contents of this method with the code editor.
              /// </summary>
              void InitializeComponent(void)
              {
                     this->components = (gcnew System::ComponentModel::Container());
                     this->timer1 = (gcnew System::Windows::Forms::Timer(this->components));
                     this->button1 = (gcnew System::Windows::Forms::Button());
                     this->label1 = (gcnew System::Windows::Forms::Label());
                     this->label2 = (gcnew System::Windows::Forms::Label());
                     this->label3 = (gcnew System::Windows::Forms::Label());
                     this->groupBox1 = (gcnew System::Windows::Forms::GroupBox());
                     this->label8 = (gcnew System::Windows::Forms::Label());
                     this->radioButton1 = (gcnew System::Windows::Forms::RadioButton());
                     this->radioButton2 = (gcnew System::Windows::Forms::RadioButton());
                     this->groupBox2 = (gcnew System::Windows::Forms::GroupBox());
                     this->textBox1 = (gcnew System::Windows::Forms::TextBox());
                     this->label7 = (gcnew System::Windows::Forms::Label());
                     this->button2 = (gcnew System::Windows::Forms::Button());
                     this->label4 = (gcnew System::Windows::Forms::Label());
                     this->label5 = (gcnew System::Windows::Forms::Label());
                     this->label6 = (gcnew System::Windows::Forms::Label());
                     this->radioButton3 = (gcnew System::Windows::Forms::RadioButton());
                     this->groupBox3 = (gcnew System::Windows::Forms::GroupBox());
                     this->textBox5 = (gcnew System::Windows::Forms::TextBox());
                     this->label13 = (gcnew System::Windows::Forms::Label());
                     this->textBox4 = (gcnew System::Windows::Forms::TextBox());
                     this->label12 = (gcnew System::Windows::Forms::Label());
                     this->textBox3 = (gcnew System::Windows::Forms::TextBox());
                     this->label11 = (gcnew System::Windows::Forms::Label());
                     this->label10 = (gcnew System::Windows::Forms::Label());
                     this->textBox2 = (gcnew System::Windows::Forms::TextBox());
                     this->label9 = (gcnew System::Windows::Forms::Label());
                     this->button3 = (gcnew System::Windows::Forms::Button());
                     this->groupBox1->SuspendLayout();
                     this->groupBox2->SuspendLayout();
                     this->groupBox3->SuspendLayout();
                     this->SuspendLayout();
                     //
                     // timer1
                     //
                     this->timer1->Tick += gcnew System::EventHandler(this, &Form1::timer1_Tick);
                     //
                     // button1
                     //
                     this->button1->Location = System::Drawing::Point(6, 19);
                     this->button1->Name = L"button1";
                     this->button1->Size = System::Drawing::Size(227, 39);
                     this->button1->TabIndex = 0;
                     this->button1->Text = L"aktifkan timer";
                     this->button1->UseVisualStyleBackColor = true;
                     this->button1->Click += gcnew System::EventHandler(this, &Form1::button1_Click);
                     //
                     // label1
                     //
                     this->label1->AutoSize = true;
                     this->label1->Font = (gcnew System::Drawing::Font(L"Tahoma", 12, System::Drawing::FontStyle::Regular, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                     this->label1->Location = System::Drawing::Point(122, 128);
                     this->label1->Name = L"label1";
                     this->label1->Size = System::Drawing::Size(18, 19);
                     this->label1->TabIndex = 2;
                     this->label1->Text = L"0";
                     //
                     // label2
                     //
                     this->label2->AutoSize = true;
                     this->label2->Font = (gcnew System::Drawing::Font(L"Tahoma", 12, System::Drawing::FontStyle::Regular, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                     this->label2->Location = System::Drawing::Point(51, 128);
                     this->label2->Name = L"label2";
                     this->label2->Size = System::Drawing::Size(65, 19);
                     this->label2->TabIndex = 3;
                     this->label2->Text = L"Counter";
                     //
                     // label3
                     //
                     this->label3->Font = (gcnew System::Drawing::Font(L"Tahoma", 12, System::Drawing::FontStyle::Regular, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                     this->label3->Location = System::Drawing::Point(6, 61);
                     this->label3->Name = L"label3";
                     this->label3->Size = System::Drawing::Size(227, 19);
                     this->label3->TabIndex = 4;
                     this->label3->Text = L"Timer  tidak aktif";
                     this->label3->TextAlign = System::Drawing::ContentAlignment::MiddleCenter;
                     //
                     // groupBox1
                     //
                     this->groupBox1->Controls->Add(this->label8);
                     this->groupBox1->Controls->Add(this->button1);
                     this->groupBox1->Controls->Add(this->label1);
                     this->groupBox1->Controls->Add(this->label2);
                     this->groupBox1->Controls->Add(this->label3);
                     this->groupBox1->Location = System::Drawing::Point(12, 51);
                     this->groupBox1->Name = L"groupBox1";
                     this->groupBox1->Size = System::Drawing::Size(239, 159);
                     this->groupBox1->TabIndex = 5;
                     this->groupBox1->TabStop = false;
                     this->groupBox1->Text = L"Mengaktifkan timer dari button";
                     //
                     // label8
                     //
                     this->label8->Font = (gcnew System::Drawing::Font(L"Tahoma", 12, System::Drawing::FontStyle::Regular, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                     this->label8->Location = System::Drawing::Point(6, 95);
                     this->label8->Name = L"label8";
                     this->label8->Size = System::Drawing::Size(227, 19);
                     this->label8->TabIndex = 5;
                     this->label8->Text = L"Interval timer : 1000";
                     this->label8->TextAlign = System::Drawing::ContentAlignment::MiddleCenter;
                     //
                     // radioButton1
                     //
                     this->radioButton1->AutoSize = true;
                     this->radioButton1->Checked = true;
                     this->radioButton1->Location = System::Drawing::Point(17, 14);
                     this->radioButton1->Name = L"radioButton1";
                     this->radioButton1->Size = System::Drawing::Size(168, 17);
                     this->radioButton1->TabIndex = 6;
                     this->radioButton1->TabStop = true;
                     this->radioButton1->Text = L"Mengaktifkan timer dari button";
                     this->radioButton1->UseVisualStyleBackColor = true;
                     this->radioButton1->CheckedChanged += gcnew System::EventHandler(this, &Form1::radioButton1_CheckedChanged);
                     //
                     // radioButton2
                     //
                     this->radioButton2->AutoSize = true;
                     this->radioButton2->Location = System::Drawing::Point(259, 14);
                     this->radioButton2->Name = L"radioButton2";
                     this->radioButton2->Size = System::Drawing::Size(120, 17);
                     this->radioButton2->TabIndex = 8;
                     this->radioButton2->Text = L"Setting interval timer";
                     this->radioButton2->UseVisualStyleBackColor = true;
                     this->radioButton2->CheckedChanged += gcnew System::EventHandler(this, &Form1::radioButton2_CheckedChanged);
                     //
                     // groupBox2
                     //
                     this->groupBox2->Controls->Add(this->textBox1);
                     this->groupBox2->Controls->Add(this->label7);
                     this->groupBox2->Controls->Add(this->button2);
                     this->groupBox2->Controls->Add(this->label4);
                     this->groupBox2->Controls->Add(this->label5);
                     this->groupBox2->Controls->Add(this->label6);
                     this->groupBox2->Enabled = false;
                     this->groupBox2->Location = System::Drawing::Point(259, 51);
                     this->groupBox2->Name = L"groupBox2";
                     this->groupBox2->Size = System::Drawing::Size(207, 159);
                     this->groupBox2->TabIndex = 7;
                     this->groupBox2->TabStop = false;
                     this->groupBox2->Text = L"Mengatur interval timer";
                     //
                     // textBox1
                     //
                     this->textBox1->Location = System::Drawing::Point(117, 29);
                     this->textBox1->Name = L"textBox1";
                     this->textBox1->Size = System::Drawing::Size(84, 20);
                     this->textBox1->TabIndex = 9;
                     this->textBox1->Text = L"1";
                     //
                     // label7
                     //
                     this->label7->AutoSize = true;
                     this->label7->Font = (gcnew System::Drawing::Font(L"Tahoma", 12, System::Drawing::FontStyle::Regular, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                     this->label7->Location = System::Drawing::Point(6, 27);
                     this->label7->Name = L"label7";
                     this->label7->Size = System::Drawing::Size(105, 19);
                     this->label7->TabIndex = 5;
                     this->label7->Text = L"Interval timer";
                     //
                     // button2
                     //
                     this->button2->Location = System::Drawing::Point(6, 61);
                     this->button2->Name = L"button2";
                     this->button2->Size = System::Drawing::Size(195, 39);
                     this->button2->TabIndex = 0;
                     this->button2->Text = L"aktifkan timer";
                     this->button2->UseVisualStyleBackColor = true;
                     this->button2->Click += gcnew System::EventHandler(this, &Form1::button2_Click);
                     //
                     // label4
                     //
                     this->label4->AutoSize = true;
                     this->label4->Font = (gcnew System::Drawing::Font(L"Tahoma", 12, System::Drawing::FontStyle::Regular, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                     this->label4->Location = System::Drawing::Point(113, 137);
                     this->label4->Name = L"label4";
                     this->label4->Size = System::Drawing::Size(18, 19);
                     this->label4->TabIndex = 2;
                     this->label4->Text = L"0";
                     //
                     // label5
                     //
                     this->label5->AutoSize = true;
                     this->label5->Font = (gcnew System::Drawing::Font(L"Tahoma", 12, System::Drawing::FontStyle::Regular, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                     this->label5->Location = System::Drawing::Point(29, 137);
                     this->label5->Name = L"label5";
                     this->label5->Size = System::Drawing::Size(65, 19);
                     this->label5->TabIndex = 3;
                     this->label5->Text = L"Counter";
                     //
                     // label6
                     //
                     this->label6->Font = (gcnew System::Drawing::Font(L"Tahoma", 12, System::Drawing::FontStyle::Regular, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                     this->label6->Location = System::Drawing::Point(6, 103);
                     this->label6->Name = L"label6";
                     this->label6->Size = System::Drawing::Size(183, 19);
                     this->label6->TabIndex = 4;
                     this->label6->Text = L"Timer  tidak aktif";
                     this->label6->TextAlign = System::Drawing::ContentAlignment::MiddleCenter;
                     //
                     // radioButton3
                     //
                     this->radioButton3->AutoSize = true;
                     this->radioButton3->Location = System::Drawing::Point(472, 14);
                     this->radioButton3->Name = L"radioButton3";
                     this->radioButton3->Size = System::Drawing::Size(190, 17);
                     this->radioButton3->TabIndex = 10;
                     this->radioButton3->Text = L"Aktifkan lampu sesuai setingan jam";
                     this->radioButton3->UseVisualStyleBackColor = true;
                     this->radioButton3->CheckedChanged += gcnew System::EventHandler(this, &Form1::radioButton3_CheckedChanged);
                     //
                     // groupBox3
                     //
                     this->groupBox3->Controls->Add(this->textBox5);
                     this->groupBox3->Controls->Add(this->label13);
                     this->groupBox3->Controls->Add(this->textBox4);
                     this->groupBox3->Controls->Add(this->label12);
                     this->groupBox3->Controls->Add(this->textBox3);
                     this->groupBox3->Controls->Add(this->label11);
                     this->groupBox3->Controls->Add(this->label10);
                     this->groupBox3->Controls->Add(this->textBox2);
                     this->groupBox3->Controls->Add(this->label9);
                     this->groupBox3->Controls->Add(this->button3);
                     this->groupBox3->Enabled = false;
                     this->groupBox3->Location = System::Drawing::Point(472, 51);
                     this->groupBox3->Name = L"groupBox3";
                     this->groupBox3->Size = System::Drawing::Size(260, 159);
                     this->groupBox3->TabIndex = 9;
                     this->groupBox3->TabStop = false;
                     this->groupBox3->Text = L"Setting timer";
                     //
                     // textBox5
                     //
                     this->textBox5->Location = System::Drawing::Point(220, 60);
                     this->textBox5->Name = L"textBox5";
                     this->textBox5->Size = System::Drawing::Size(34, 20);
                     this->textBox5->TabIndex = 16;
                     this->textBox5->Text = L"1";
                     //
                     // label13
                     //
                     this->label13->AutoSize = true;
                     this->label13->Location = System::Drawing::Point(182, 63);
                     this->label13->Name = L"label13";
                     this->label13->Size = System::Drawing::Size(32, 13);
                     this->label13->TabIndex = 15;
                     this->label13->Text = L"Detik";
                     //
                     // textBox4
                     //
                     this->textBox4->Location = System::Drawing::Point(136, 60);
                     this->textBox4->Name = L"textBox4";
                     this->textBox4->Size = System::Drawing::Size(34, 20);
                     this->textBox4->TabIndex = 14;
                     this->textBox4->Text = L"0";
                     //
                     // label12
                     //
                     this->label12->AutoSize = true;
                     this->label12->Location = System::Drawing::Point(97, 63);
                     this->label12->Name = L"label12";
                     this->label12->Size = System::Drawing::Size(33, 13);
                     this->label12->TabIndex = 13;
                     this->label12->Text = L"Menit";
                     //
                     // textBox3
                     //
                     this->textBox3->Location = System::Drawing::Point(43, 60);
                     this->textBox3->Name = L"textBox3";
                     this->textBox3->Size = System::Drawing::Size(34, 20);
                     this->textBox3->TabIndex = 12;
                     this->textBox3->Text = L"0";
                     //
                     // label11
                     //
                     this->label11->AutoSize = true;
                     this->label11->Location = System::Drawing::Point(14, 63);
                     this->label11->Name = L"label11";
                     this->label11->Size = System::Drawing::Size(26, 13);
                     this->label11->TabIndex = 11;
                     this->label11->Text = L"Jam";
                     //
                     // label10
                     //
                     this->label10->BackColor = System::Drawing::Color::Black;
                     this->label10->Location = System::Drawing::Point(114, 129);
                     this->label10->Name = L"label10";
                     this->label10->Size = System::Drawing::Size(48, 24);
                     this->label10->TabIndex = 10;
                     //
                     // textBox2
                     //
                     this->textBox2->Enabled = false;
                     this->textBox2->Location = System::Drawing::Point(117, 29);
                     this->textBox2->Name = L"textBox2";
                     this->textBox2->Size = System::Drawing::Size(137, 20);
                     this->textBox2->TabIndex = 9;
                     this->textBox2->Text = L"1000";
                     //
                     // label9
                     //
                     this->label9->AutoSize = true;
                     this->label9->Font = (gcnew System::Drawing::Font(L"Tahoma", 12, System::Drawing::FontStyle::Regular, System::Drawing::GraphicsUnit::Point,
                           static_cast<System::Byte>(0)));
                     this->label9->Location = System::Drawing::Point(6, 27);
                     this->label9->Name = L"label9";
                     this->label9->Size = System::Drawing::Size(105, 19);
                     this->label9->TabIndex = 5;
                     this->label9->Text = L"Interval timer";
                     //
                     // button3
                     //
                     this->button3->Location = System::Drawing::Point(6, 87);
                     this->button3->Name = L"button3";
                     this->button3->Size = System::Drawing::Size(248, 39);
                     this->button3->TabIndex = 0;
                     this->button3->Text = L"aktifkan timer";
                     this->button3->UseVisualStyleBackColor = true;
                     this->button3->Click += gcnew System::EventHandler(this, &Form1::button3_Click);
                     //
                     // Form1
                     //
                     this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
                     this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
                     this->ClientSize = System::Drawing::Size(744, 222);
                     this->Controls->Add(this->radioButton3);
                     this->Controls->Add(this->groupBox3);
                     this->Controls->Add(this->radioButton2);
                     this->Controls->Add(this->groupBox2);
                     this->Controls->Add(this->radioButton1);
                     this->Controls->Add(this->groupBox1);
                     this->Name = L"Form1";
                     this->Text = L"Timer by Rifqi";
                     this->groupBox1->ResumeLayout(false);
                     this->groupBox1->PerformLayout();
                     this->groupBox2->ResumeLayout(false);
                     this->groupBox2->PerformLayout();
                     this->groupBox3->ResumeLayout(false);
                     this->groupBox3->PerformLayout();
                     this->ResumeLayout(false);
                     this->PerformLayout();

              }
#pragma endregion
       private: System::Void timer1_Tick(System::Object^  sender, System::EventArgs^  e) {
                            if(radioButton1->Checked){
                                   a++;
                                   label1->Text=a.ToString();
                            }
                            else if(radioButton2->Checked){
                                   a++;
                                   label4->Text=a.ToString();
                            }
                            else if(radioButton3->Checked){
                                   detik++;
                                   if(detik==60){
                                           menit++;
                                          detik=0;
                                   }

                                   if(menit==60){
                                          jam++;
                                          menit=0;
                                   }

                                   if(jam==jam1 && menit==men1 && detik==det1){
                                          timer1->Enabled=false;
                                          label10->BackColor = System::Drawing::Color::Red;
                                          button3->Text="Reset";
                                   }
                                   
                            }
                      }
       private: System::Void radioButton1_CheckedChanged(System::Object^  sender, System::EventArgs^  e) {
                            groupBox1->Enabled=true;
                            groupBox2->Enabled=false;
                            a=0;
                            label4->Text="0";
                            label6->Text="Timer Tidak Aktif";
                            button2->Text="aktifkan timer";
                            button3->Text="aktifkan timer";
                            label10->BackColor = System::Drawing::Color::Black;
                      }
       private: System::Void radioButton2_CheckedChanged(System::Object^  sender, System::EventArgs^  e) {
                             groupBox1->Enabled=false;
                            groupBox2->Enabled=true;
                            timer1->Enabled = false;
                            a=0;
                            label1->Text="0";
                            label3->Text="Timer Tidak Aktif";
                            button1->Text="aktifkan timer";
                            button3->Text="aktifkan timer";
                            label10->BackColor = System::Drawing::Color::Black;
                      }    

private: System::Void radioButton3_CheckedChanged(System::Object^  sender, System::EventArgs^  e) {
                             groupBox1->Enabled=false;//mengubah enabled groupBox
                            groupBox2->Enabled=false;
                            groupBox3->Enabled=true;
                            timer1->Enabled = false;
                            a=0;
                            detik=0;
                            menit=0;
                            jam=0;
                            label1->Text="0";
                            label4->Text="0";
                            label3->Text="Timer Tidak Aktif";
                            label6->Text="Timer Tidak Aktif";
                            button1->Text="aktifkan timer";
                            button2->Text="aktifkan timer";
               }

private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
                      if(button1->Text=="aktifkan timer"){
                            timer1->Interval = 1000;
                            timer1->Enabled = true;
                            a=0;
                            label1->Text="0";
                            label3->Text="Timer Aktif";
                            button1->Text="non aktifkan timer";
                      }
                      else{
                            timer1->Enabled = false;
                            a=0;
                            label3->Text="Timer Tidak Aktif";
                            button1->Text="aktifkan timer";
                      }
              }
private: System::Void button2_Click(System::Object^  sender, System::EventArgs^  e) {
                      if(textBox1->Text==""){
                            MessageBox::Show("Masukkan nilai interval pada textBox terlebih dahulu!!!");
                      }
                      else{
                            if(button2->Text=="aktifkan timer"){
                                   timer1->Interval = System::Int32::Parse(textBox1->Text);//ambil data dari textBox
                                   timer1->Enabled = true;//mengaktifkan timer
                                   a=0;//inisialisasi nilai a
                                   label4->Text="0";//mengubah text pada label
                                   label6->Text="Timer Aktif";//mengubah text pada label
                                   button2->Text="non aktifkan timer";//mengubah text pada button
                            }
                            else{
                                   timer1->Enabled = false//me-non-aktifkan timer
                                   a=0;  //inisialisasi nilai a
                                   label6->Text="Timer Tidak Aktif";//mengubah text pada label
                                   button2->Text="aktifkan timer";//mengubah text pada button
                                   label10->BackColor = System::Drawing::Color::Black;//mengubah backColor label               
                            }
                      }
               }
private: System::Void button3_Click(System::Object^  sender, System::EventArgs^  e) {
                      if(textBox3->Text=="" || textBox4->Text=="" || textBox5->Text==""){
                            MessageBox::Show("Lengkapi data pada textBox terlebih dahulu!!!");//messageBox
                      }
                      else{
                            if(button3->Text=="aktifkan timer"){
                                   timer1->Interval = System::Int32::Parse(textBox2->Text);//ambil nilai dari textBox
                                   timer1->Enabled = true;//mengaktifkan timer

                                   //inisialisasi nilai variabel
                                   a=0;
                                   detik=0;
                                   menit=0;
                                   jam=0;

                                   //ambil nilai dari textBox

                                   jam1=System::Int32::Parse(textBox3->Text);
                                   men1=System::Int32::Parse(textBox4->Text);
                                   det1=System::Int32::Parse(textBox5->Text);
                                   
                                   button3->Text="Stop timer";//mengubah text pada button
                            }
                            else if(button3->Text=="Reset"){
                                   //inisialisasi nilai variabel
                                   a=0;
                                   detik=0;
                                   menit=0;
                                   jam=0;
                                   button3->Text="aktifkan timer";//mengubah text pada button
                                   label10->BackColor = System::Drawing::Color::Black;//setting backColor label
                            }
                            else{
                                   timer1->Enabled = false;//me-non-aktifkan timer

                                   //inisialisasi nilai variabel
                                   a=0; 
                                   detik=0;
                                   menit=0;
                                   jam=0;

                                   button3->Text="aktifkan timer";//mengubah text pada button
                            }
                      }
               }
};
}

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