QT 关闭添加确认提示

重写closeEvent

//.h

 void closeEvent(QCloseEvent *event);

//.cpp

void SceMainWindow::closeEvent(QCloseEvent *event)

{

    int closeApp = QMessageBox::question(this, "提示", "您确定要退出吗?", "确定", "取消", 0);

    if(closeApp == 0)

    {

        event->accept();

    }

    else

    {

        event->ignore();

    }

}