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The QPtrStack class is a template class that provides a stack. More...
#include <qptrstack.h>
QValueStack is an STL-compatible alternative to this class.
Define a template instance QPtrStack<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 QPtrCollection classes current() and remove() are provided; they both operate on the top().
See also QPtrList, QPtrQueue, and Non-GUI Classes.
Creates an empty stack.
Creates a stack by making a shallow copy of another stack s.
Destroys the stack. All items will be deleted if autoDelete() is TRUE.
The same as QPtrCollection::autoDelete().
See also setAutoDelete().
Removes all items from the stack, deleting them if autoDelete() is TRUE.
See also remove().
Returns the number of items in the stack.
See also isEmpty().
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.
Returns TRUE is the stack contains no elements; otherwise returns FALSE.
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.
Sets the contents of this stack by making a shallow copy of another stack s. Elements currently in this stack will be deleted if autoDelete() is TRUE.
Removes the top item from the stack and returns it. The stack must not be empty.
Adds an element d to the top of the stack. Last in, first out.
Reads a stack item, item, from the stream s and returns a reference to the stream.
The default implementation sets item to 0.
See also write().
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.
See also clear().
Defines whether this stack auto-deletes its contents. The same as QPtrCollection::setAutoDelete().
If enable is TRUE the stack auto-deletes its contents; if enable is FALSE the stack does not delete its contents.
See also autoDelete().
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.
Writes a stack item, item, to the stream s and returns a reference to the stream.
The default implementation does nothing.
See also read().
This file is part of the Qt toolkit. Copyright © 1995-2003 Trolltech. All Rights Reserved.
| Copyright © 2003 Trolltech | Trademarks | Qt version 3.1.2
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