请教关于close后内存是否自动释放的问题 [复制链接]

TestPing::TestPing(QWidget *parent, Qt::WFlags flags):QWidget(parent, flags)
{  
    font.setFamily("wenquanyi");
    font.setPointSize(20);
    inputLabel = new QLabel(tr("Input CMD:"));
    inputEdit = new QLineEdit;
    runButton = new QPushButton(tr("Go"));  
    stopButton = new QPushButton(tr("Quit"));  
    outputLabel = new QLabel(tr("Out Window:"));  
    outputEdit = new QTextEdit;

    inputLabel ->setFont(font);
    inputEdit ->setFont(font);
    runButton->setFont(font);
    stopButton->setFont(font);
    outputLabel->setFont(font);
    outputEdit->setFont(font);

    outputEdit->setReadOnly(true);  

    hlayout = new QHBoxLayout;   //水平排列
    hlayout->addWidget(inputEdit);
    hlayout->addWidget(runButton);
    hlayout->addWidget(stopButton);
    layout = new QVBoxLayout;   //垂直排列
    layout->addWidget(inputLabel);
    layout->addLayout(hlayout);  
    layout->addWidget(outputLabel);  
    layout->addWidget(outputEdit);  
    setLayout(layout);
    
    cmd = new QProcess;
    stopcmd = new QProcess;
    connect(inputEdit, SIGNAL(returnPressed()), this, SLOT(runClicked()));  
    connect(runButton, SIGNAL(clicked(bool)), this, SLOT(runClicked()));  
    connect(stopButton, SIGNAL(clicked(bool)), this, SLOT(stopClicked()));  
    connect(cmd, SIGNAL(readyRead()), this, SLOT(readOutput()));  

}  

TestPing::~TestPing() //close后程序是否是自动释放空间的?
{
    delete inputLabel;
    delete inputEdit;
    delete runButton;
    delete stopButton;
    delete outputLabel;
    delete outputEdit;
    delete hlayout;
    delete layout;
    delete cmd;
    delete stopcmd;
}
这里我是否需要人工释放内存？？
我是通过一个信号将窗口关闭（这是个子窗口）
QObject::connect(this, SIGNAL(quitPing()), this, SLOT(close()));
emit quitPing();

看帮助文档

方法：
在构造函数中加一句：setAttribute(Qt::WA_DeleteOnClose); // 设置为在关闭的时候释放内存

然后在虚构函数中加一句：qDebug() << "Deleted";

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如果在close()执行后，有Deleted输出，说明widget的内存被自动释放了。