The QGLayoutIterator class is an abstract base class of internal layout iterators.
More...
Detailed Description
The QGLayoutIterator class is an abstract base class of internal layout iterators.
(This class is not OpenGL related, it just happens to start with
the letters QGL...)
Subclass this class to create a custom layout. The functions that
must be implemented are next(), current(), and takeCurrent().
The QGLayoutIterator implements the functionality of
QLayoutIterator. Each subclass of QLayout needs a
QGLayoutIterator subclass.
See also Widget Appearance and Style and Layout Management.
Member Function Documentation
QGLayoutIterator::~QGLayoutIterator () [virtual]
Destroys the iterator
QLayoutItem * QGLayoutIterator::current () [pure virtual]
Implemented in subclasses to return the current item, or 0 if
there is no current item.
Examples: customlayout/border.cpp, customlayout/card.cpp, and customlayout/flow.cpp.
QLayoutItem * QGLayoutIterator::next () [pure virtual]
Implemented in subclasses to move the iterator to the next item
and return that item, or 0 if there is no next item.
Examples: customlayout/border.cpp, customlayout/card.cpp, and customlayout/flow.cpp.
QLayoutItem * QGLayoutIterator::takeCurrent () [pure virtual]
Implemented in subclasses. The function must remove the current
item from the layout without deleting it, move the iterator to the
next item and return the removed item, or 0 if no item was
removed.
Examples: customlayout/border.cpp, customlayout/card.cpp, and customlayout/flow.cpp.
This file is part of the Qt toolkit.
Copyright © 1995-2003
Trolltech. All Rights Reserved.
