summaryrefslogtreecommitdiffstats
path: root/doc/src/widgets-and-layouts/widgets.qdoc
blob: 18b8be1c2959e935ff611c63880cda028d5737b2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:FDL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in a
** written agreement between you and Nokia.
**
** GNU Free Documentation License
** 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/

/*!
  \page widgets-and-layouts.html
  \title Widgets and Layouts
  \ingroup qt-gui-concepts
  \brief The primary elements for designing user interfaces in Qt.

  \section1 Widgets

  Widgets are the primary elements for creating user interfaces in Qt.
  \l{The 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{Window and Dialog Widgets} {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{Styles &amp 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.

  \section1 The Widget Classes

  The following sections list the widget classes. See the \l{Qt Widget
  Gallery} for some examples.

  \section2 Basic Widgets

  These basic widgets (controls), e.g. 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

  \section2 Advanced Widgets

  Advanced GUI widgets, e.g. 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

  \section2 Organizer Widgets

  Classes like splitters, tab bars, button groups, etc are used for
  organizing and grouping GUI primitives into more complex
  applications and dialogs.

  \annotatedlist organizers

  \section2 Abstract Widget Classes

  The abstract widget classes are base classes. They are not usable as
  standalone classes but provide functionality when they are subclassed.

  \annotatedlist abstractwidgets
*/

/*!
    \group advanced
    \title Advanced Widgets
*/

/*!
    \group abstractwidgets
    \title Abstract Widget Classes
*/

/*!
    \group basicwidgets
    \title Basic Widgets
*/

/*!
    \group organizers
    \title Organizers
*/