1 /****************************************************************************
3 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/
6 ** This file is part of the documentation of the Qt Toolkit.
8 ** $QT_BEGIN_LICENSE:BSD$
9 ** You may use this file under the terms of the BSD license as follows:
11 ** "Redistribution and use in source and binary forms, with or without
12 ** modification, are permitted provided that the following conditions are
14 ** * Redistributions of source code must retain the above copyright
15 ** notice, this list of conditions and the following disclaimer.
16 ** * Redistributions in binary form must reproduce the above copyright
17 ** notice, this list of conditions and the following disclaimer in
18 ** the documentation and/or other materials provided with the
20 ** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
21 ** the names of its contributors may be used to endorse or promote
22 ** products derived from this software without specific prior written
25 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
39 ****************************************************************************/
48 Q_DECLARE_METATYPE(MyStruct)
58 Q_DECLARE_METATYPE(MyNamespace::MyStruct)
65 var.setValue(s); // copy s into the variant
70 MyStruct s2 = var.value<MyStruct>();
75 int id = QMetaType::type("MyClass");
77 void *myClassPtr = QMetaType::create(id);
79 QMetaType::destroy(id, myClassPtr);
86 qRegisterMetaType<MyClass>("MyClass");
91 qRegisterMetaTypeStreamOperators<MyClass>("MyClass");
96 QDataStream &operator<<(QDataStream &out, const MyClass &myObj);
97 QDataStream &operator>>(QDataStream &in, MyClass &myObj);
102 int id = qRegisterMetaType<MyStruct>();
107 int id = qMetaTypeId<QString>(); // id is now QMetaType::QString
108 id = qMetaTypeId<MyStruct>(); // compile error if MyStruct not declared
112 typedef QString CustomString;
113 qRegisterMetaType<CustomString>("CustomString");