iterator Class | Qt GUI 5.12.12

- Qt 5.12
- Qt GUI
- C++ Classes
- iterator
- Qt 5.12.12 Reference Documentation

# iterator Class

(QTextFrame::iterator)

The iterator class provides an iterator for reading the contents of a QTextFrame. More...

Header: | #include <iterator>
qmake: | QT += gui

- List of all members, including inherited members

## Public Functions

| iterator()
| iterator(const iterator &other)
| iterator(iterator &&other)
bool | atEnd() const
QTextBlock | currentBlock() const
QTextFrame * | currentFrame() const
QTextFrame * | parentFrame() const
bool | operator!=(const iterator &other) const
iterator & | operator++()
iterator | operator++(int)
iterator & | operator--()
iterator | operator--(int)
iterator & | operator=(const iterator &other)
iterator & | operator=(iterator &&other)
bool | operator==(const iterator &other) const

## Detailed Description

The iterator class provides an iterator for reading the contents of a QTextFrame.

A frame consists of an arbitrary sequence of QTextBlocks and child QTextFrames. This class provides a way to iterate over the child objects of a frame, and read their contents. It does not provide a way to modify the contents of the frame.

## Member Function Documentation

### iterator::iterator()

Constructs an invalid iterator.

### iterator::iterator(const iterator &other)

Copy constructor. Constructs a copy of the other iterator.

### iterator::iterator(iterator &&other)

Default constructs an instance of iterator.

### bool iterator::atEnd() const

Returns `true` if the current item is the last item in the text frame.

### QTextBlock iterator::currentBlock() const

Returns the current block the iterator points to. If the iterator points to a child frame, the returned block is invalid.

See also currentFrame().

### QTextFrame *iterator::currentFrame() const

Returns the current frame pointed to by the iterator, or 0 if the iterator currently points to a block.

See also currentBlock().

### QTextFrame *iterator::parentFrame() const

Returns the parent frame of the current frame.

See also currentFrame() and QTextFrame::parentFrame().

### bool iterator::operator!=(const iterator &other) const

Retuns true if the iterator is different from the other iterator; otherwise returns `false`.

### iterator &iterator::operator++()

Moves the iterator to the next frame or block.

See also currentBlock() and currentFrame().

### iterator iterator::operator++(int)

The postfix ++ operator (`i++`) advances the iterator to the next item in the text frame, and returns an iterator to the old item.

### iterator &iterator::operator--()

Moves the iterator to the previous frame or block.

See also currentBlock() and currentFrame().

### iterator iterator::operator--(int)

The postfix -- operator (`i--`) makes the preceding item in the current frame, and returns an iterator to the old item.

### iterator &iterator::operator=(const iterator &other)

Assigns other to this iterator and returns a reference to this iterator.

### iterator &iterator::operator=(iterator &&other)

Move-assignment operator.

### bool iterator::operator==(const iterator &other) const

Retuns true if the iterator is the same as the other iterator; otherwise returns `false`.