source: trunk/doc/src/snippets/code/doc_src_properties.qdoc@ 865

Last change on this file since 865 was 846, checked in by Dmitry A. Kuminov, 14 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.

File size: 3.8 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
6**
7** This file is part of the documentation of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:BSD$
10** You may use this file under the terms of the BSD license as follows:
11**
12** "Redistribution and use in source and binary forms, with or without
13** modification, are permitted provided that the following conditions are
14** met:
15** * Redistributions of source code must retain the above copyright
16** notice, this list of conditions and the following disclaimer.
17** * Redistributions in binary form must reproduce the above copyright
18** notice, this list of conditions and the following disclaimer in
19** the documentation and/or other materials provided with the
20** distribution.
21** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
22** the names of its contributors may be used to endorse or promote
23** products derived from this software without specific prior written
24** permission.
25**
26** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
37** $QT_END_LICENSE$
38**
39****************************************************************************/
40
41//! [0]
42Q_PROPERTY(type name
43 READ getFunction
44 [WRITE setFunction]
45 [RESET resetFunction]
46 [NOTIFY notifySignal]
47 [DESIGNABLE bool]
48 [SCRIPTABLE bool]
49 [STORED bool]
50 [USER bool]
51 [CONSTANT]
52 [FINAL])
53//! [0]
54
55
56//! [1]
57Q_PROPERTY(bool focus READ hasFocus)
58Q_PROPERTY(bool enabled READ isEnabled WRITE setEnabled)
59Q_PROPERTY(QCursor cursor READ cursor WRITE setCursor RESET unsetCursor)
60//! [1]
61
62
63//! [2]
64Q_PROPERTY(QDate date READ getDate WRITE setDate)
65//! [2]
66
67
68//! [3]
69QPushButton *button = new QPushButton;
70QObject *object = button;
71
72button->setDown(true);
73object->setProperty("down", true);
74//! [3]
75
76
77//! [4]
78QObject *object = ...
79const QMetaObject *metaobject = object->metaObject();
80int count = metaobject->propertyCount();
81for (int i=0; i<count; ++i) {
82 QMetaProperty metaproperty = metaobject->property(i);
83 const char *name = metaproperty.name();
84 QVariant value = object->property(name);
85 ...
86}
87//! [4]
88
89
90//! [5]
91class MyClass : public QObject
92{
93 Q_OBJECT
94 Q_PROPERTY(Priority priority READ priority WRITE setPriority NOTIFY priorityChanged)
95 Q_ENUMS(Priority)
96
97public:
98 MyClass(QObject *parent = 0);
99 ~MyClass();
100
101 enum Priority { High, Low, VeryHigh, VeryLow };
102
103 void setPriority(Priority priority)
104 {
105 m_priority = priority;
106 emit priorityChanged(priority);
107 }
108 Priority priority() const
109 { return m_priority; }
110
111signals:
112 void priorityChanged(Priority);
113
114private:
115 Priority m_priority;
116};
117//! [5]
118
119
120//! [6]
121MyClass *myinstance = new MyClass;
122QObject *object = myinstance;
123
124myinstance->setPriority(MyClass::VeryHigh);
125object->setProperty("priority", "VeryHigh");
126//! [6]
127
128
129//! [7]
130Q_CLASSINFO("Version", "3.0.0")
131//! [7]
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