QProgressBar updates as function progress

Question

How to initializa the operation of QProgressBar, I already declare her maximum, minimum, range and values.

I want to assimilate the progress of QProgressBar with the "sleep_for" function.

Current code:

void MainPrograma::on_pushCorre_clicked()
{
    QPlainTextEdit *printNaTela = ui->plainTextEdit;
    printNaTela->moveCursor(QTextCursor::End);
    printNaTela->insertPlainText("corrida iniciada\n");

    QProgressBar *progresso = ui->progressBar;
    progresso->setMaximum(100);
    progresso->setMinimum(0);
    progresso->setRange(0, 100);
    progresso->setValue(0);
    progresso->show();

    WORD wEndereco = 53606;
    WORD wValor = 01;
    WORD ifValor = 0;
    EscreveVariavel(wEndereco, wValor);


//How to assimilate QProgressBar to this function:
std::this_thread::sleep_for(std::chrono::milliseconds(15000));
//StackOverFlow help me please


    EscreveVariavel(wEndereco, ifValor);

Answer 1

use a QTimer

and in the slot update the value of the progressbar

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    t = new QTimer(this);
    t->setSingleShot(false);
    c = 0;
    connect(t, &QTimer::timeout, [this]()
    {   c++;
        if (c==100) {
            c=0;
        }
        qDebug() << "T...";
        ui->progressBar->setValue(c);
    });
}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::on_pushButton_clicked()
{
    t->start(100);
}