Use break in Qt

RIVOPICO

Sorry but with Qt it's possible to use break for example when i want to close one program. Thx in advance.

tham

break is use to get out from loop, not for closing program. If you want to close the program, you can call
QApplication::quit().

If you want to exit because some error occur, you can call QCoreApplication::exit(), because this function can return non zero return code.

If the event loop is not running, QCoreApplication::exit() wouldn;t work, in this case you should call exit(failure_code);

RIVOPICO

@tham thx sir

? Offline

As a side note, to add to @tham, if you have a GUI application like this...

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();
    return a.exec();
}

... you can exit the application by closing the MainWindow.

So let's say you have a QPushButton (named "push_button"), then the following clicked handler will close the window and thus exit the program:

void MainWindow::on_pushButton_clicked()
{
    close();
}