diff options
Diffstat (limited to 'doc/src/snippets/signalsandslots')
| -rw-r--r-- | doc/src/snippets/signalsandslots/lcdnumber.h | 88 | ||||
| -rw-r--r-- | doc/src/snippets/signalsandslots/signalsandslots.cpp | 84 | ||||
| -rw-r--r-- | doc/src/snippets/signalsandslots/signalsandslots.h | 89 |
3 files changed, 261 insertions, 0 deletions
diff --git a/doc/src/snippets/signalsandslots/lcdnumber.h b/doc/src/snippets/signalsandslots/lcdnumber.h new file mode 100644 index 0000000000..3706387d24 --- /dev/null +++ b/doc/src/snippets/signalsandslots/lcdnumber.h @@ -0,0 +1,88 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** $QT_END_LICENSE$ +** +****************************************************************************/ + +//! [0] +#ifndef LCDNUMBER_H +//! [0] //! [1] +#define LCDNUMBER_H +//! [1] + +//! [2] +#include <QFrame> +//! [2] + +//! [3] +class LcdNumber : public QFrame +//! [3] //! [4] +{ +//! [4] //! [5] + Q_OBJECT +//! [5] + +//! [6] +public: +//! [6] //! [7] + LcdNumber(QWidget *parent = 0); +//! [7] + +//! [8] +signals: +//! [8] //! [9] + void overflow(); +//! [9] + +//! [10] +public slots: +//! [10] //! [11] + void display(int num); + void display(double num); + void display(const QString &str); + void setHexMode(); + void setDecMode(); + void setOctMode(); + void setBinMode(); + void setSmallDecimalPoint(bool point); +//! [11] //! [12] +}; +//! [12] + +//! [13] +#endif +//! [13] diff --git a/doc/src/snippets/signalsandslots/signalsandslots.cpp b/doc/src/snippets/signalsandslots/signalsandslots.cpp new file mode 100644 index 0000000000..42622322ed --- /dev/null +++ b/doc/src/snippets/signalsandslots/signalsandslots.cpp @@ -0,0 +1,84 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QAbstractButton> + +#include "signalsandslots.h" + +//! [0] +void Counter::setValue(int value) +{ + if (value != m_value) { + m_value = value; + emit valueChanged(value); + } +} +//! [0] + +int main() +{ +//! [1] + Counter a, b; +//! [1] //! [2] + QObject::connect(&a, SIGNAL(valueChanged(int)), + &b, SLOT(setValue(int))); +//! [2] + +//! [3] + a.setValue(12); // a.value() == 12, b.value() == 12 +//! [3] //! [4] + b.setValue(48); // a.value() == 12, b.value() == 48 +//! [4] + + + QWidget *widget = reinterpret_cast<QWidget *>(new QObject(0)); +//! [5] + if (widget->inherits("QAbstractButton")) { + QAbstractButton *button = static_cast<QAbstractButton *>(widget); + button->toggle(); +//! [5] //! [6] + } +//! [6] + +//! [7] + if (QAbstractButton *button = qobject_cast<QAbstractButton *>(widget)) + button->toggle(); +//! [7] +} diff --git a/doc/src/snippets/signalsandslots/signalsandslots.h b/doc/src/snippets/signalsandslots/signalsandslots.h new file mode 100644 index 0000000000..0671181f5f --- /dev/null +++ b/doc/src/snippets/signalsandslots/signalsandslots.h @@ -0,0 +1,89 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef SIGNALSANDSLOTS_H +#define SIGNALSANDSLOTS_H + +#define Counter PlainCounter + +//! [0] +class Counter +{ +public: + Counter() { m_value = 0; } + + int value() const { return m_value; } + void setValue(int value); + +private: + int m_value; +}; +//! [0] + +#undef Counter +#define Counter ObjectCounter + +//! [1] +#include <QObject> +//! [1] + +//! [2] +class Counter : public QObject +//! [2] //! [3] +{ + Q_OBJECT + +public: + Counter() { m_value = 0; } + + int value() const { return m_value; } + +public slots: + void setValue(int value); + +signals: + void valueChanged(int newValue); + +private: + int m_value; +}; +//! [3] + +#endif |