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// --------------------------------------------------------------------------
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// OpenMS -- Open-Source Mass Spectrometry
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// --------------------------------------------------------------------------
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// Copyright The OpenMS Team -- Eberhard Karls University Tuebingen,
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// ETH Zurich, and Freie Universitaet Berlin 2002-2013.
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// This software is released under a three-clause BSD license:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of any author or any participating institution
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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// For a full list of authors, refer to the file AUTHORS.
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// --------------------------------------------------------------------------
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL ANY OF THE AUTHORS OR THE CONTRIBUTING
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// INSTITUTIONS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// --------------------------------------------------------------------------
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// $Maintainer: Chris Bielow $
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// $Authors: Chris Bielow $
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// --------------------------------------------------------------------------
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#include <OpenMS/CONCEPT/Exception.h>
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#include <OpenMS/CONCEPT/LogStream.h>
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#include <OpenMS/VISUAL/APPLICATIONS/MISC/QApplicationTOPP.h>
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#include <QtGui/QApplication>
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#include <QMessageBox>
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#include <QFileOpenEvent>
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QApplicationTOPP::QApplicationTOPP(int& argc, char** argv) :
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QApplication(argc, argv)
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QApplicationTOPP::~QApplicationTOPP()
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@brief: Catch exceptions in Qt GUI applications, preventing ungraceful exit
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Re-implementing QApplication::notify() to catch exception thrown in event handlers (which is most likely OpenMS code).
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bool QApplicationTOPP::notify(QObject* rec, QEvent* ev)
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// this is called quite often (whenever a signal is fired), so mind performance!
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return QApplication::notify(rec, ev);
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catch (Exception::BaseException& e)
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String msg = String("Caught exception: '") + e.getName() + "' with message '" + e.getMessage() + "'";
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LOG_ERROR << msg << "\n";
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QMessageBox::warning(0, QString("Unexpected error occurred"), msg.toQString());
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// we could also exit() here... but no for now
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return false; // never reached, so return value does not matter
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bool QApplicationTOPP::event(QEvent* event)
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switch (event->type())
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case QEvent::FileOpen:
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emit fileOpen(static_cast<QFileOpenEvent*>(event)->file());
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return QApplication::event(event);