/******************************************************************************** Copyright (C) 2006-2006 Trolltech ASA. All rights reserved.**** This file is part of the example classes of the Qt Toolkit.**** This file may be used under the terms of the GNU General Public** License version 2.0 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 GNU** General Public Licensing requirements will be met:** http://www.trolltech.com/products/qt/opensource.html**** If you are unsure which license is appropriate for your use, please** review the following information:** http://www.trolltech.com/products/qt/licensing.html or contact the** sales department at sales@trolltech.com.**** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.******************************************************************************/#include <QtGui>#include "mainwindow.h"#include "textedit.h"MainWindow::MainWindow(QWidget *parent)    : QMainWindow(parent), completer(0){    createMenu();    completingTextEdit = new TextEdit;    completer = new QCompleter(this);    completer->setModel(modelFromFile(":/resources/wordlist.txt"));    completer->setModelSorting(QCompleter::CaseInsensitivelySortedModel);    completer->setCaseSensitivity(Qt::CaseInsensitive);    completingTextEdit->setCompleter(completer);     setCentralWidget(completingTextEdit);    resize(500, 300);    setWindowTitle(tr("Completer"));}void MainWindow::createMenu(){    QAction *exitAction = new QAction(tr("Exit"), this);    QAction *aboutAct = new QAction(tr("About"), this);    QAction *aboutQtAct = new QAction(tr("About Qt"), this);    connect(exitAction, SIGNAL(triggered()), qApp, SLOT(quit()));    connect(aboutAct, SIGNAL(triggered()), this, SLOT(about()));    connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt()));    QMenu* fileMenu = menuBar()->addMenu(tr("File"));    fileMenu->addAction(exitAction);    QMenu* helpMenu = menuBar()->addMenu(tr("About"));    helpMenu->addAction(aboutAct);    helpMenu->addAction(aboutQtAct);}QAbstractItemModel *MainWindow::modelFromFile(const QString& fileName){    QFile file(fileName);    if (!file.open(QFile::ReadOnly))        return new QStringListModel(completer);    QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));    QStringList words;        while (!file.atEnd()) {        QByteArray line = file.readLine();        if (!line.isEmpty())            words << line.trimmed();    }    QApplication::restoreOverrideCursor();    return new QStringListModel(words, completer);}void MainWindow::about(){    QMessageBox::about(this, tr("About"), tr("This example demonstrates the "        "different features of the QCompleter class."));}