main.cpp Example File | Qt Script

- Qt 5.4
- Qt Script
- Hello Script Example
- main.cpp Example File
- Qt 5.4.2 Reference Documentation

# main.cpp Example File

script/helloscript/main.cpp

    /****************************************************************************
    **
    ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
    ** Contact: http://www.qt-project.org/legal
    **
    ** This file is part of the examples 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 Digia Plc 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 <QApplication>
    #include <QFile>
    #include <QMessageBox>
    #include <QPushButton>
    #include <QTextStream>
    #include <QTranslator>
    #include <QtScript>

    int main(int argc, char *argv[])
    {
        Q_INIT_RESOURCE(helloscript);

        QApplication app(argc, argv);

        QScriptEngine engine;

        QTranslator translator;
        translator.load("helloscript_la");
        app.installTranslator(&translator);
        engine.installTranslatorFunctions();

        QPushButton button;
        QScriptValue scriptButton = engine.newQObject(&button);
        engine.globalObject().setProperty("button", scriptButton);

        QString fileName(":/helloscript.js");
        QFile scriptFile(fileName);
        scriptFile.open(QIODevice::ReadOnly);
        QTextStream stream(&scriptFile);
        QString contents = stream.readAll();
        scriptFile.close();

    #ifdef Q_OS_SYMBIAN
        contents.replace("button.show()", "button.showMaximized()");
    #endif

        QScriptValue result = engine.evaluate(contents, fileName);

        if (result.isError()) {
            QMessageBox::critical(0, "Hello Script",
                                  QString::fromLatin1("%0:%1: %2")
                                  .arg(fileName)
                                  .arg(result.property("lineNumber").toInt32())
                                  .arg(result.toString()));
            return -1;
        }

        return app.exec();
    }