Should we remove the layout in the destructor?

[morde]

MainWindow.cpp

MainWindow::MainWindow(QWidget *parent) : QWidget(parent)
{
    label = new QLabel(this);
    label->setText(tr("Text:"));
line = new QLineEdit(this);
output = new QPlainTextEdit(this);

layoutHorizontal = new QHBoxLayout();
layoutHorizontal->addWidget(label);
layoutHorizontal->addWidget(line);

layoutVertical = new QVBoxLayout();
layoutVertical->addLayout(layoutHorizontal);
layoutVertical->addWidget(output);

setLayout(layoutVertical);

}

How do I understand layoutHorizontal and layoutVertical in the hierarchy of Qt objects, and will not be removed by chain? MainWindow is here only for example.

[emran]

You don't think these objects will be in hierarchy. layoutHorizontal It's like, "through." layoutVertical Here we go.

layoutVertical->addLayout(layoutHorizontal);

♪ layoutVertical It's going to become a descendant. MainWindow Here we go.

setLayout(layoutVertical);

Accordingly, it's clear to destroy them in the destructor. MainWindow No need.