source: trunk/doc/src/snippets/code/src_script_qscriptvalue.cpp@ 973

Last change on this file since 973 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: 3.1 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]
42QScriptEngine myEngine;
43QScriptValue myObject = myEngine.newObject();
44QScriptValue myOtherObject = myEngine.newObject();
45myObject.setProperty("myChild", myOtherObject);
46myObject.setProperty("name", "John Doe");
47//! [0]
48
49
50//! [1]
51QScriptValue val(&myEngine, 123);
52myObject.setProperty("myReadOnlyProperty", val, QScriptValue::ReadOnly);
53//! [1]
54
55
56//! [2]
57QScriptEngine engine;
58engine.evaluate("function fullName() { return this.firstName + ' ' + this.lastName; }");
59engine.evaluate("somePerson = { firstName: 'John', lastName: 'Doe' }");
60
61QScriptValue global = engine.globalObject();
62QScriptValue fullName = global.property("fullName");
63QScriptValue who = global.property("somePerson");
64qDebug() << fullName.call(who).toString(); // "John Doe"
65
66engine.evaluate("function cube(x) { return x * x * x; }");
67QScriptValue cube = global.property("cube");
68QScriptValueList args;
69args << 3;
70qDebug() << cube.call(QScriptValue(), args).toNumber(); // 27
71//! [2]
72
73
74//! [3]
75QScriptValue myNativeFunction(QScriptContext *ctx, QScriptEngine *)
76{
77 QScriptValue otherFunction = ...;
78 return otherFunction.call(ctx->thisObject(), ctx->argumentsObject());
79}
80//! [3]
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