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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** All rights reserved.
** Contact: http://www.qt-project.org/legal
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
/*!
\page widgets-and-layouts.html
\title Widgets and Layouts
\ingroup frameworks-technologies
\nextpage Widget Classes
The primary elements for designing user interfaces in Qt are widgets and layouts.
\section1 Widgets
\l{Widget Classes}{Widgets} can display data and status information, receive
user input, and provide a container for other widgets that should be grouped
together. A widget that is not embedded in a parent widget is called a
\l{Application Windows and Dialogs}{window}.
\image parent-child-widgets.png A parent widget containing various child widgets.
The QWidget class provides the basic capability to render to the screen, and to
handle user input events. All UI elements that Qt provides are either subclasses
of QWidget, or are used in connection with a QWidget subclass. Creating custom
widgets is done by subclassing QWidget or a suitable subclass and reimplementing
the virtual event handlers.
\section1 Layouts
\l{Layout Management}{Layouts} are an elegant and flexible way to automatically
arrange child widgets within their container. Each widget reports its size requirements
to the layout through the \l{QWidget::}{sizeHint} and \l{QWidget::}{sizePolicy}
properties, and the layout distributes the available space accordingly.
\table
\row
\o \image qgridlayout-with-5-children.png
\o \image qformlayout-with-6-children.png
\endtable
\l{Qt Designer Manual}{\QD} is a powerful tool for interactively creating and
arranging widgets in layouts.
\section1 Widget Styles
\l{Implementing Styles and Style Aware Widgets}{Styles} draw on behalf of widgets
and encapsulate the look and feel of a GUI. Qt's built-in widgets use the QStyle
class to perform nearly all of their drawing, ensuring that they look exactly like
the equivalent native widgets.
\table
\row
\o \image windowsxp-tabwidget.png
\o \image plastique-tabwidget.png
\o \image macintosh-tabwidget.png
\endtable
\l{Qt Style Sheets} are a powerful mechanism that allows you to customize the
appearance of widgets, in addition to what is already possible by subclassing QStyle.
*/
/*!
\page widget-classes.html
\title Widget Classes
\contentspage Widgets and Layouts
\nextpage Layout Management
Below you find a list of all widget classes in Qt. You can also browse the
widget classes Qt provides in the various supported styles in the
\l{Qt Widget Gallery}.
\tableofcontents
\section1 Basic Widgets
These basic widgets (controls), such as buttons, comboboxes and scroll bars, are
designed for direct use.
\table
\row
\o \image windows-label.png
\o \image windowsvista-pushbutton.png
\o \image gtk-progressbar.png
\row
\o \image plastique-combobox.png
\o \image macintosh-radiobutton.png
\o \image cde-lineedit.png
\endtable
\annotatedlist basicwidgets
\section1 Advanced Widgets
Advanced GUI widgets such as tab widgets and progress bars provide more
complex user interface controls.
\table
\row
\o \image windowsxp-treeview.png
\o \image gtk-calendarwidget.png
\o \image qundoview.png
\endtable
\annotatedlist advanced
\table
\row
\o \image windowsvista-tabwidget.png
\o \image macintosh-groupbox.png
\endtable
\section1 Organizer Widgets
Classes like splitters, tab bars, button groups, etc are used to
organize and group GUI primitives into more complex applications or
dialogs.
\annotatedlist organizers
\section1 Abstract Widget Classes
Abstract widget classes usable through subclassing. They are generally
not usable in themselves, but provide functionality that can be used
by inheriting these classes.
\annotatedlist abstractwidgets
*/
/*!
\group advanced
\title Advanced Widgets
*/
/*!
\group abstractwidgets
\title Abstract Widget Classes
*/
/*!
\group basicwidgets
\title Basic Widgets
*/
/*!
\group organizers
\title Organizers
*/
|
