Membuat traffight pada Qt

Laporan Sistem Manufaktur Terpadu
Timer pada Traffic Light
Studi Kasus Traffic Light pada Siwalankerto, Surabaya

Listing Program

1.      widget.h

#ifndef WIDGET_H

#define WIDGET_H

#include

namespace Ui {

    class Widget;

}

class Widget : public QWidget

{

    Q_OBJECT

public:

    explicit Widget(QWidget *parent = 0);

    ~Widget();

private:

    Ui::Widget *ui;

private slots:

    void update();

    void on_pushButton_clicked();

};

#endif // WIDGET_H

2.  main.cpp
#include
#include "widget.h"
int main(int argc, char *argv[])

{

    QApplication a(argc, argv);

    Widget w;

    w.show();

    return a.exec();

}

3.  widget.cpp
#include "widget.h"

#include "ui_widget.h"

#include "QTimer"

#include "QSound"

int a=16,kuning=3,merah=12;

Widget::Widget(QWidget *parent) :

    QWidget(parent),

    ui(new Ui::Widget)

{

    ui->setupUi(this);

    QTimer *timer = new QTimer(this);

         connect(timer, SIGNAL(timeout()), this, SLOT(update()));

         timer->start(1000);

}

Widget::~Widget()

{

    delete ui;

}

void Widget::update()

{

    if(a<=3)

    {

        ui->label->setPixmap(QPixmap("C:/Users/EVAN/Pictures/New folder/yellow.png"));

        ui->label_2->setPixmap(QPixmap("C:/Users/EVAN/Pictures/New folder/yellow.png"));

        ui->lcdNumber->display(kuning);

        kuning--;

        QSound::play("C:/Users/EVAN/Downloads/Music/sirentone.wav");

    }

    else if(a<=15)

    {   kuning=3;

        ui->label->setPixmap(QPixmap("C:/Users/EVAN/Pictures/New folder/11949849771043985234traffic_light_red_dan_ge_01.svg.med.png"));

        ui->label_2->setPixmap(QPixmap("C:/Users/EVAN/Pictures/New folder/11949849761176136192traffic_light_green_dan__01.svg.med.png"));

        ui->lcdNumber->display(merah);

        merah--;

        QSound::play("C:/Users/EVAN/Downloads/Music/sirentone_2.wav");

    }

    else

    {   merah=11;

        ui->label->setPixmap(QPixmap("C:/Users/EVAN/Pictures/New folder/11949849761176136192traffic_light_green_dan__01.svg.med.png"));

        ui->label_2->setPixmap(QPixmap("C:/Users/EVAN/Pictures/New folder/11949849771043985234traffic_light_red_dan_ge_01.svg.med.png"));

 }

    a++;

}

void Widget::on_pushButton_clicked()

{

    a=0;

}