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authorLars Knoll <lars.knoll@nokia.com>2009-03-23 09:18:55 (GMT)
committerSimon Hausmann <simon.hausmann@nokia.com>2009-03-23 09:18:55 (GMT)
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Long live Qt 4.5!
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+ \class QSignalSpy
+ \inmodule QtTest
+
+ \brief The QSignalSpy class enables introspection of signal emission.
+
+ QSignalSpy can connect to any signal of any object and records its emission.
+ QSignalSpy itself is a list of QVariant lists. Each emission of the signal
+ will append one item to the list, containing the arguments of the signal.
+
+ The following example records all signal emissions for the \c clicked() signal
+ of a QCheckBox:
+
+ \snippet doc/src/snippets/code/doc_src_qsignalspy.qdoc 0
+
+ \c{spy.takeFirst()} returns the arguments for the first emitted signal, as a
+ list of QVariant objects. The \c clicked() signal has a single bool argument,
+ which is stored as the first entry in the list of arguments.
+
+ The example below catches a signal from a custom object:
+
+ \snippet doc/src/snippets/code/doc_src_qsignalspy.qdoc 1
+
+ \bold {Note:} Non-standard data types need to be registered, using
+ the qRegisterMetaType() function, before you can create a
+ QSignalSpy. For example:
+
+ \snippet doc/src/snippets/code/doc_src_qsignalspy.qdoc 2
+
+ To retrieve the \c QModelIndex, you can use qvariant_cast:
+
+ \snippet doc/src/snippets/code/doc_src_qsignalspy.qdoc 3
+ */
+
+/*! \fn QSignalSpy::QSignalSpy(QObject *object, const char *signal)
+
+ Constructs a new QSignalSpy that listens for emissions of the \a signal
+ from the QObject \a object. Neither \a signal nor \a object can be null.
+
+ Example:
+ \snippet doc/src/snippets/code/doc_src_qsignalspy.qdoc 4
+*/
+
+/*! \fn QSignalSpy::isValid() const
+
+ Returns true if the signal spy listens to a valid signal, otherwise false.
+*/
+
+/*! \fn QSignalSpy::signal() const
+
+ Returns the normalized signal the spy is currently listening to.
+*/
+
+/*! \fn int QSignalSpy::qt_metacall(QMetaObject::Call call, int id, void **a)
+ \internal
+*/
+