Close program correctly

bagipro

I have a code

In header file
@Eng* dialog;@

In MainWindow
@void MainWindow::on_pushButton_clicked()
{
if( w.size() < 3)
{
QMessageBox box;
box.setText(QString("Error: Count of words less then 3"));
box.exec();
exit(1);
}
dialog->show();
dialog->start(w,0);
}@

And in eng.cpp file
@void Eng::start(Words w, int type)
{
word = w;
size = w.size();
ui->label3->setNum(size);
int error = 0;
int all = 0;
while(true)
{
ui->pushButton1->setStyleSheet("");
ui->pushButton2->setStyleSheet("");
ui->pushButton3->setStyleSheet("");

    setAs();
    right = rand() % 3;

    speak(w.getEng( a[right] ));

    ui->label1->setText("&lt;html&gt;&lt;head/>&lt;body&gt;&lt;p><span style=\"font-size:26pt;\">" + (type == 0 ? w.getRus( a[right] ) : w.getEng( a[right] )) + "</span></p>&lt;/body&gt;&lt;/html>" );

    ui->pushButton1->setText(type == 0 ? w.getEng( a[0] ) : w.getRus( a[0] ));
    ui->pushButton2->setText(type == 0 ? w.getEng( a[1] ) : w.getRus( a[1] ));
    ui->pushButton3->setText(type == 0 ? w.getEng( a[2] ) : w.getRus( a[2] ));

    QEventLoop loop,loopNext;
    QObject::connect(this,SIGNAL(clickedButton()),&loop,SLOT(quit()));
    loop.exec&#40;&#41;;

    if(right == 0) ui->pushButton1->setStyleSheet("background-color: #40DE06");
    else if(right == 1) ui->pushButton2->setStyleSheet("background-color: #40DE06");
    else ui->pushButton3->setStyleSheet("background-color: #40DE06");

    all++;
    if(right != choice)
    {
        if(choice == 0) ui->pushButton1->setStyleSheet("background-color: #E80D0D");
        else if(choice == 1) ui->pushButton2->setStyleSheet("background-color: #E80D0D");
        else ui->pushButton3->setStyleSheet("background-color: #E80D0D");
        error++;
    }

    double percentError = ((int)(((double)error/all)*10000)) / 100.0;
    ui->label5->setText(QString::number(percentError) + "%" + " (" + QString::number(error) + ")");
    ui->label5->setStyleSheet("color: #AA0000");

    QObject::connect(ui->buttonNext,SIGNAL(released()),&loopNext,SLOT(quit()));
    loopNext.exec&#40;&#41;;
}

}@

When i close dialog and after close mainwindow, i get infinite cycle (program not closes!). I wanna click on red X in right upper corner of window and close program

mehrdadsilver

use @qApp->exit(0);@ in closeEvent

bagipro

Yeah! it's works. thx u

SGaist

Hi,

This is one solution to do it but you should maybe consider a redesign of that part of the code. Using an infinite loop like this is not really recommended when doing a UI especially since you don't offer any possibility to get out of it.