45 lines
1.8 KiB
Plaintext
45 lines
1.8 KiB
Plaintext
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2016 The Qt Company Ltd.
|
|
** Contact: https://www.qt.io/licensing/
|
|
**
|
|
** This file is part of the documentation of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:FDL$
|
|
** Commercial License Usage
|
|
** Licensees holding valid commercial Qt licenses may use this file in
|
|
** accordance with the commercial license agreement provided with the
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
** a written agreement between you and The Qt Company. For licensing terms
|
|
** and conditions see https://www.qt.io/terms-conditions. For further
|
|
** information use the contact form at https://www.qt.io/contact-us.
|
|
**
|
|
** GNU Free Documentation License Usage
|
|
** Alternatively, this file may be used under the terms of the GNU Free
|
|
** Documentation License version 1.3 as published by the Free Software
|
|
** Foundation and appearing in the file included in the packaging of
|
|
** this file. Please review the following information to ensure
|
|
** the GNU Free Documentation License version 1.3 requirements
|
|
** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
/*!
|
|
\example tools/undo
|
|
\title Undo Framework
|
|
\ingroup examples-widgets-tools
|
|
|
|
\brief This example shows Qt's undo framework in action.
|
|
|
|
\image undodemo.png
|
|
|
|
Qt's undo framework is an implementation of the Command
|
|
pattern, which provides advanced undo/redo functionality.
|
|
|
|
To show the abilities of the framework, we have implemented a
|
|
small diagram application in which the diagram items are geometric
|
|
primitives. You can edit the diagram in the following ways: add,
|
|
move, change the color of, and delete the items.
|
|
*/
|