c++qtqtguiqlayout

Does QLayout::addWidget assign a parent

Say I have something like this:

void someClass::start()
{
    QLabel* label = new QLabel();
    label->setText("Hello World");
    ui.verticalLayout->addWidget(label);
}

Does addWidget make label a child of someClass so that when I delete someClass, label is also deleted? If this is true, how do I know which methods in general assign parents to an object?

Solution

  • From Qt Documentation — Layout Management — Tips for Using Layouts:

    When you use a layout, you do not need to pass a parent when constructing the child widgets. The layout will automatically reparent the widgets (using QWidget::setParent()) so that they are children of the widget on which the layout is installed.