Issue with qmessagebox, can't change its position

Question

I have this

int MainWindow::messageBox( QString button, QMessageBox::ButtonRole buttons, QString info, QMessageBox::Icon icon )
{
    QFont f;

    f.setPointSize(6);

    QMessageBox *message = new QMessageBox(this);
    message->setWindowModality(Qt::WindowModal);
    message->setFont(f);
    message->setText(info);
    message->addButton( button, buttons );
    message->setWindowTitle("MainWindow");
    message->setIcon(icon);
    message->move( this->width() / 2, this->height() / 2 );

    return message->exec();
}

But I can't make the qmessagebox go to the center of the screen, I also tried using setGeometry, but it doesn't work. Any ideas on this?

Answer 1

I solved using show() before moving it. This is the code:

int MainWindow::messageBox( QString button, QMessageBox::ButtonRole buttons, QString info, QMessageBox::Icon icon )
{
    QFont f;
    QMessageBox *message = new QMessageBox(this);
    QDesktopWidget *win = new QDesktopWidget();

    f.setPointSize(6);

    message->setWindowModality(Qt::WindowModal);
    message->setFont(f);
    message->setText(info);
    message->addButton( button, buttons );
    message->setWindowTitle("MainWindow");
    message->setIcon(icon);
    message->show();
    message->move( win->width() / 2 - message->width() / 2, win->height() / 2 - message->height() / 2 );

    return message->exec();
}