Qt 5.6 | Qt Widgets | C++ Classes | QVBoxLayout

Qt 5.6.2 Reference Documentation

# QVBoxLayout Class

The QVBoxLayout class lines up widgets vertically. More...

Header: | #include <QVBoxLayout>
qmake: | QT += widgets
Inherits: | QBoxLayout

- List of all members, including inherited members

## Public Functions

| QVBoxLayout()
| QVBoxLayout(QWidget *parent)
| ~QVBoxLayout()

- 33 public functions inherited from QBoxLayout
- 36 public functions inherited from QLayout
- 17 public functions inherited from QLayoutItem

### Additional Inherited Members

- 2 properties inherited from QLayout
- 1 static public member inherited from QLayout
- 4 protected functions inherited from QLayout

## Detailed Description

The QVBoxLayout class lines up widgets vertically.

This class is used to construct vertical box layout objects. See QBoxLayout for details.

The simplest use of the class is like this:

          QWidget *window = new QWidget;
          QPushButton *button1 = new QPushButton("One");
          QPushButton *button2 = new QPushButton("Two");
          QPushButton *button3 = new QPushButton("Three");
          QPushButton *button4 = new QPushButton("Four");
          QPushButton *button5 = new QPushButton("Five");

          QVBoxLayout *layout = new QVBoxLayout;
          layout->addWidget(button1);
          layout->addWidget(button2);
          layout->addWidget(button3);
          layout->addWidget(button4);
          layout->addWidget(button5);

          window->setLayout(layout);
          window->show();

First, we create the widgets we want in the layout. Then, we create the QVBoxLayout object and add the widgets into the layout. Finally, we call QWidget::setLayout() to install the QVBoxLayout object onto the widget. At that point, the widgets in the layout are reparented to have `window` as their parent.

See also QHBoxLayout, QGridLayout, QStackedLayout, Layout Management, and Basic Layouts Example.

## Member Function Documentation

### QVBoxLayout::QVBoxLayout()

Constructs a new vertical box. You must add it to another layout.

### QVBoxLayout::QVBoxLayout(QWidget *parent)

Constructs a new top-level vertical box with parent parent.

### QVBoxLayout::~QVBoxLayout()

Destroys this box layout.

The layout's widgets aren't destroyed.