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    40 ****************************************************************************/

    41 

    42 #include <QtGui>

    43 #include "mainwindow.h"

    44 #include "textedit.h"

    45 

    46 //! [0]

    47 MainWindow::MainWindow(QWidget *parent)

    48     : QMainWindow(parent), completer(0)

    49 {

    50     createMenu();

    51 

    52     completingTextEdit = new TextEdit;

    53     completer = new QCompleter(this);

    54     completer->setModel(modelFromFile(":/resources/wordlist.txt"));

    55     completer->setModelSorting(QCompleter::CaseInsensitivelySortedModel);

    56     completer->setCaseSensitivity(Qt::CaseInsensitive);

    57     completer->setWrapAround(false);

    58     completingTextEdit->setCompleter(completer);

    59 

    60     setCentralWidget(completingTextEdit);

    61     resize(500, 300);

    62     setWindowTitle(tr("Completer"));

    63 }

    64 //! [0]

    65 

    66 //! [1]

    67 void MainWindow::createMenu()

    68 {

    69     QAction *exitAction = new QAction(tr("Exit"), this);

    70     QAction *aboutAct = new QAction(tr("About"), this);

    71     QAction *aboutQtAct = new QAction(tr("About Qt"), this);

    72 

    73     connect(exitAction, SIGNAL(triggered()), qApp, SLOT(quit()));

    74     connect(aboutAct, SIGNAL(triggered()), this, SLOT(about()));

    75     connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt()));

    76 

    77     QMenu* fileMenu = menuBar()->addMenu(tr("File"));

    78     fileMenu->addAction(exitAction);

    79 

    80     QMenu* helpMenu = menuBar()->addMenu(tr("About"));

    81     helpMenu->addAction(aboutAct);

    82     helpMenu->addAction(aboutQtAct);

    83 }

    84 //! [1]

    85 

    86 //! [2]

    87 QAbstractItemModel *MainWindow::modelFromFile(const QString& fileName)

    88 {

    89     QFile file(fileName);

    90     if (!file.open(QFile::ReadOnly))

    91         return new QStringListModel(completer);

    92 

    93 #ifndef QT_NO_CURSOR

    94     QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));

    95 #endif

    96     QStringList words;

    97     

    98     while (!file.atEnd()) {

    99         QByteArray line = file.readLine();

   100         if (!line.isEmpty())

   101             words << line.trimmed();

   102     }

   103 

   104 #ifndef QT_NO_CURSOR

   105     QApplication::restoreOverrideCursor();

   106 #endif

   107     return new QStringListModel(words, completer);

   108 }

   109 //! [2]

   110 

   111 //! [3]

   112 void MainWindow::about()

   113 {

   114     QMessageBox::about(this, tr("About"), tr("This example demonstrates the "

   115         "different features of the QCompleter class."));

   116 }

   117 //! [3]

   118