qt中获取窗口位置和大小

    //窗口左上角的位置(含边框)
    qDebug() << this->frameGeometry().x() << this->frameGeometry().y() << ;//1
    qDebug() << this->x()  << this->y();//2
    qDebug() << this->pos().x() << this->pos().y();//3
    //窗口的宽度和高度(含边框)
    qDebug() << this->frameGeometry().width() << this->frameGeometry().height();
    //窗口左上角的位置(不含边框)
    qDebug() << this->geometry().x() << this->geometry().y();
    //窗口的宽度和高度(不含边框)
    qDebug() << this->geometry().width() << this->geometry().height();//1
    qDebug() << this->width() << this->height();//2
    qDebug() << this->rect().width() << this->rect().height();//3
    qDebug() << this->size().width() << this->size().height();//4