--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/help/simpletextviewer/assistant.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,110 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/QByteArray>
+#include <QtCore/QDir>
+#include <QtCore/QLibraryInfo>
+#include <QtCore/QProcess>
+
+#include <QtGui/QMessageBox>
+
+#include "assistant.h"
+
+Assistant::Assistant()
+    : proc(0)
+{
+}
+
+//! [0]
+Assistant::~Assistant()
+{
+    if (proc && proc->state() == QProcess::Running) {
+        proc->terminate();
+        proc->waitForFinished(3000);
+    }
+    delete proc;
+}
+//! [0]
+
+//! [1]
+void Assistant::showDocumentation(const QString &page)
+{
+    if (!startAssistant())
+        return;
+
+    QByteArray ba("SetSource ");
+    ba.append("qthelp://com.trolltech.examples.simpletextviewer/doc/");
+    
+    proc->write(ba + page.toLocal8Bit() + '\0');
+}
+//! [1]
+
+//! [2]
+bool Assistant::startAssistant()
+{
+    if (!proc)
+        proc = new QProcess();
+
+    if (proc->state() != QProcess::Running) {
+        QString app = QLibraryInfo::location(QLibraryInfo::BinariesPath) + QDir::separator();
+#if !defined(Q_OS_MAC)
+        app += QLatin1String("assistant");
+#else
+        app += QLatin1String("Assistant.app/Contents/MacOS/Assistant");    
+#endif
+
+        QStringList args;
+        args << QLatin1String("-collectionFile")
+            << QLibraryInfo::location(QLibraryInfo::ExamplesPath)
+            + QLatin1String("/help/simpletextviewer/documentation/simpletextviewer.qhc")
+            << QLatin1String("-enableRemoteControl");
+
+        proc->start(app, args);
+
+        if (!proc->waitForStarted()) {
+            QMessageBox::critical(0, QObject::tr("Simple Text Viewer"),
+                QObject::tr("Unable to launch Qt Assistant (%1)").arg(app));
+            return false;
+        }    
+    }
+    return true;
+}
+//! [2]