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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+  \class Q3PtrStack
+  \brief The Q3PtrStack class is a template class that provides a stack.
+  \compat
+
+  Q3ValueStack is an STL-compatible alternative to this class.
+
+  Define a template instance Q3PtrStack\<X\> to create a stack that
+  operates on pointers to X, (X*). 
+
+  A stack is a last in, first out (LIFO) structure. Items are added
+  to the top of the stack with push() and retrieved from the top
+  with pop(). Use top() to get a reference to the top element
+  without changing the stack.
+
+  You can control the stack's deletion policy with setAutoDelete().
+
+  For compatibility with the Q3PtrCollection classes current() and
+  remove() are provided; they both operate on the top().
+
+  \sa Q3PtrList Q3PtrQueue
+*/
+
+/*!
+  \fn Q3PtrStack::Q3PtrStack () 
+
+  Creates an empty stack.
+*/
+
+/*!
+  \fn Q3PtrStack::Q3PtrStack (const Q3PtrStack<type>& s) 
+
+  Creates a stack by making a shallow copy of another stack \a s.
+*/
+
+/*!
+  \fn Q3PtrStack::~Q3PtrStack () 
+
+  Destroys the stack. All items will be deleted if autoDelete() is
+  true.
+*/
+
+/*!
+  \fn Q3PtrStack<type>& Q3PtrStack::operator= (const Q3PtrStack<type>& s) 
+
+  Sets the contents of this stack by making a shallow copy of
+  another stack \a s. Elements currently in this stack will be
+  deleted if autoDelete() is true.
+*/
+
+/*!
+  \fn bool Q3PtrStack::isEmpty () const 
+
+  Returns true if the stack contains no elements; otherwise returns
+  false.
+*/
+
+/*!
+  \fn void Q3PtrStack::push (const type* d) 
+
+  Adds an element \a d to the top of the stack. Last in, first out.
+*/
+
+/*!
+  \fn type* Q3PtrStack::pop () 
+
+  Removes the top item from the stack and returns it. The stack must
+  not be empty.
+*/
+
+/*!
+  \fn bool Q3PtrStack::remove () 
+
+  Removes the top item from the stack and deletes it if autoDelete()
+  is true. Returns true if there was an item to pop; otherwise
+  returns false.
+
+  \sa clear()
+*/
+
+/*!
+  \fn void Q3PtrStack::clear()
+
+  Removes all items from the stack, deleting them if autoDelete() is
+  true.
+
+  \sa remove()
+*/
+
+/*!
+  \fn uint Q3PtrStack::count() const
+
+  Returns the number of items in the stack.
+
+  \sa isEmpty()
+*/
+
+/*!
+  \fn type* Q3PtrStack::top () const 
+
+  Returns a pointer to the top item on the stack (most recently
+  pushed). The stack is not changed. Returns 0 if the stack is
+  empty.
+*/
+
+/*!
+  \fn Q3PtrStack::operator type* ()const 
+
+  Returns a pointer to the top item on the stack (most recently
+  pushed). The stack is not changed. Returns 0 if the stack is
+  empty.
+*/
+
+/*!
+  \fn type* Q3PtrStack::current () const 
+
+  Returns a pointer to the top item on the stack (most recently
+  pushed). The stack is not changed. Returns 0 if the stack is
+  empty.
+*/
+
+/*!
+  \fn bool Q3PtrStack::autoDelete() const
+
+  The same as Q3PtrCollection::autoDelete(). Returns true if 
+  the auto-delete option is set. If the option is set, the 
+  stack auto-deletes its contents. 
+
+  \sa setAutoDelete()
+*/
+
+/*!
+  \fn void Q3PtrStack::setAutoDelete(bool enable) 
+
+  Defines whether this stack auto-deletes its contents. The same as
+  Q3PtrCollection::setAutoDelete(). If \a enable is true, auto-delete
+  is turned on.
+
+  If auto-deleting is turned on, all the items in the stack are
+  deleted when the stack itself is deleted. This is convenient if
+  the stack has the only pointers to the items.
+
+  The default setting is false, for safety. If you turn it on, be
+  careful about copying the stack, or you might find yourself with
+  two stacks deleting the same items.
+
+  Note that the auto-delete setting may also affect other functions in
+  subclasses. For example, a subclass that has a remove() function
+  will remove the item from its data structure, and if auto-delete is
+  enabled, will also delete the item.
+  
+  \sa autoDelete()
+*/
+
+/*!
+  \fn QDataStream& Q3PtrStack::read(QDataStream& s, Q3PtrCollection::Item& item)
+
+  Reads a stack item, \a item, from the stream \a s and returns a
+  reference to the stream.
+
+  The default implementation sets \a item to 0.
+
+  \sa write()
+*/
+
+/*!
+  \fn QDataStream& Q3PtrStack::write(QDataStream& s,
+				     Q3PtrCollection::Item item) const
+
+  Writes a stack item, \a item, to the stream \a s and returns a
+  reference to the stream.
+
+  The default implementation does nothing.
+
+  \sa read()
+*/