QMessageBox

 int r = QMessageBox::warning(this, tr("QMessageBox"),
                    tr("This is a QMessageBox.\n"
                       "Thank you!"),
                    QMessageBox::Yes | QMessageBox::No
                    | QMessageBox::Cancel);
    if (r == QMessageBox::Yes) {
        printf("***Yes***");
    } else if (r == QMessageBox::Cancel) {
        printf("***Cancel***");
    }

QMessaggeBox::warning(parent, title, message, buttons);