Qt学习笔记 QMessageBox

QMessageBox::information(this,tr("hello"),tr("title"));

    QMessageBox::StandardButton returnBtn;
    returnBtn = QMessageBox::question(this,tr("hello have problem?"),tr("error!"),QMessageBox::Yes|QMessageBox::No);
    if(returnBtn==QMessageBox::Yes)
    {
        QMessageBox::information(this,tr("Yes!"),tr("error"));
    }

QMessageBox::warning(this,tr("warning!"),tr("warning!"));

    QMessageBox msg;
    msg.setText("customer!");
    msg.setWindowTitle(tr("titleHaHa"));
    msg.setStandardButtons(QMessageBox::Ok|QMessageBox::Cancel);
    msg.exec();