|  | Home · All Classes · Main Classes · Grouped Classes · Modules · Functions |

# mainwindow.cpp Example File
tools/customcompleter/mainwindow.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2006-2008 Trolltech ASA. All rights reserved.
     **
     ** This file is part of the documentation of the Qt Toolkit.
     **
     ** This file may be used under the terms of the GNU General Public
    ** License versions 2.0 or 3.0 as published by the Free Software
    ** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
    ** included in the packaging of this file.  Alternatively you may (at
    ** your option) use any later version of the GNU General Public
    ** License if such license has been publicly approved by Trolltech ASA
    ** (or its successors, if any) and the KDE Free Qt Foundation. In
    ** addition, as a special exception, Trolltech gives you certain
    ** additional rights. These rights are described in the Trolltech GPL
    ** Exception version 1.2, which can be found at
    ** http://www.trolltech.com/products/qt/gplexception/ and in the file
    ** GPL_EXCEPTION.txt in this package.
    **
    ** Please review the following information to ensure GNU General
    ** Public Licensing requirements will be met:
    ** http://trolltech.com/products/qt/licenses/licensing/opensource/. If
    ** you are unsure which license is appropriate for your use, please
    ** review the following information:
    ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
    ** or contact the sales department at sales@trolltech.com.
    **
    ** In addition, as a special exception, Trolltech, as the sole
    ** copyright holder for Qt Designer, grants users of the Qt/Eclipse
    ** Integration plug-in the right for the Qt/Eclipse Integration to
    ** link to functionality provided by Qt Designer and its related
    ** libraries.
    **
    ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
    ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
    ** A PARTICULAR PURPOSE. Trolltech reserves all rights not expressly
    ** granted herein.
     **
     ** 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);
         completer->setWrapAround(false);
         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);

     #ifndef QT_NO_CURSOR
         QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
     #endif
         QStringList words;

         while (!file.atEnd()) {
             QByteArray line = file.readLine();
             if (!line.isEmpty())
                 words << line.trimmed();
         }

     #ifndef QT_NO_CURSOR
         QApplication::restoreOverrideCursor();
     #endif
         return new QStringListModel(words, completer);
     }

     void MainWindow::about()
     {
         QMessageBox::about(this, tr("About"), tr("This example demonstrates the "
             "different features of the QCompleter class."));
     }