Bonsoir,

Voila je débute sous Qt et j'ai du mal avec le système de TrayIcone. Mon problème est que sous windows le programme marche très bien mais lorsque je le compile et l'execute sous linux cela ne marche pas j'ai droit à un jolie segmentation fault. Voici le code:

ptray.h
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#ifndef PTRAY_H
#define PTRAY_H
 
#include <QSystemTrayIcon>
#include "pnoteeditor.h"
 
class QAction;
class QMenu;
class QString;
 
class PTray : PNoteEditor
{
      Q_OBJECT
 
      public:
            PTray ();
            void setVisible (bool visible);
 
      protected:
            void closeEvent (QCloseEvent *event);
 
      private slots:
            void iconActivated (QSystemTrayIcon::ActivationReason reason);
            void showMessage ();
            void messageClicked ();
            void newNote ();
            void editNote ();
            void on_noteTitleChanged (const QString &str = "");
            void on_noteTextChanged (const QString &str = "");
            void showConfigDialog ();
            void removeActionFromHistory (QAction *);
            void on_settingsUpdated ();
            void quitTray ();
            void loadRssFile (const QString&);
      private:
            void createActions ();
            void createTrayIcon ();
            void addNoteToHistory (const QString &title = "", const QString &body = "");
            void writeSettings ();
            void writeNotes ();
            void readSettings ();
            QAction *quitAction;
            QAction *minimizeAction;
            QAction *maximizeAction;
            QAction *restoreAction;
            QAction *newNoteAction;
            QAction *currentNoteAction;
            QAction *configAction;
            QActionGroup *history;
            QSystemTrayIcon *trayIcon;
            QMenu *trayIconMenu;
            bool warnOnClose;
            QString notesFileName ;
            QString iconFileName ;
};
 
#endif
ptray.cpp
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#include <QtGui>
#include "ptray.h"
#include "pconfigdialog.h"
#include "pxmlhandler.h"
 
PTray::PTray () : PNoteEditor ()
{
      warnOnClose = false;
      readSettings ();
      createActions ();
      createTrayIcon ();
      connect (trayIcon, SIGNAL (messageClicked ()), this, SLOT (messageClicked ()));
      connect (trayIcon, SIGNAL (activated (QSystemTrayIcon::ActivationReason)), this, SLOT (iconActivated (QSystemTrayIcon::ActivationReason)));
      connect (this, SIGNAL (noteTitleChanged (const QString&)), this, SLOT (on_noteTitleChanged (const QString&)));
      connect(this, SIGNAL (noteTextChanged (const QString&)), this, SLOT (on_noteTextChanged (const QString&)));
      trayIcon->show ();
      setVisible (true);
      setNoteTitle ("");
      setNoteText ("");
      loadRssFile (notesFileName);
}
 
void PTray::loadRssFile (const QString &fileName)
{
      int i;
 
      if(QFile::exists (fileName))
      {
            QFile file (fileName);
            QXmlInputSource inputSource (&file);
            QXmlSimpleReader reader;
            QList<QAction *> list;
            PXmlHandler handler (&list);
            reader.setContentHandler (&handler);
            reader.setErrorHandler (&handler);
            reader.parse (inputSource);
            for(i=0;i<list.count ();i++)
            {
                  QAction *act = list.at (i);
                  addNoteToHistory (act->text (), act->toolTip ());
            }
      }
}
 
void PTray::writeNotes ()
{
      QFile file (notesFileName);
      if (!file.open (QFile::WriteOnly | QFile::Text))
      {
            QMessageBox::warning(this, tr ("Pense bête"),
			    tr ("Ne peut pas écrire de fichier %1:\n%2.")
			    .arg (notesFileName)
			    .arg (file.errorString ()));
      }
      else
      {
            QTextStream out (&file);
            out.setCodec ("UTF-8");
            QApplication::setOverrideCursor (Qt::WaitCursor);
            QApplication::restoreOverrideCursor ();
            out << "<?xml version=\"1.0\"?>\n<rss version=\"2.0\">\n<channel>\n";
            out << "<title>Pense bête</title>\n";
            out << "<link>fichier://" << notesFileName << "</link>\n";
            out << "<description>fichier de données Pense bête.</description>\n";
            out << "<language>" << QLocale::system ().name () << "</language>\n";
            out << "<pubDate>" << QDateTime::currentDateTime ().toString (Qt::TextDate) << "</pubDate>\n";
            out << "<lastBuildDate>" << QDateTime::currentDateTime().toString(Qt::TextDate) << "</lastBuildDate>\n";
            out << "<docs></docs>\n";
            out << "<generator>Pense bête 1.0</generator>\n";
            out << "<managingEditor></managingEditor>\n";
            out << "<webMaster></webMaster>\n";
            out << "<ttl></ttl>\n\n";
            QAction *ita;
            foreach (ita, history->actions ())
            {
                  if (!ita->text ().isEmpty () )
                  {
                        out << "<item>\n<title>" << Qt::escape (ita->text ()) << "</title>\n<link>fichier://" << Qt::escape (notesFileName) << "</link>\n";
                        out << "<description>" << Qt::escape (ita->toolTip ()) << "</description>\n<pubDate>" << Qt::escape (QDateTime::currentDateTime ().toString (Qt::TextDate)) << "</pubDate>\n<guid></guid>\n</item>\n\n";
                  }
            }
            out << "</channel>\n</rss>\n";
      }
}
 
void PTray::writeSettings ()
{
      QSettings settings ("toto", "Pense bête");
      settings.setValue ("pos", pos ());
      settings.setValue ("size", size ());
      settings.setValue ("notesFileName", notesFileName);
      settings.setValue ("iconFileName", iconFileName);
}
 
void PTray::readSettings ()
{
      QSettings settings ("toto", "Pense bête");
      QPoint pos = settings.value ("pos", QPoint (200, 200)).toPoint ();
      QSize size = settings.value ("size", QSize (800, 600)).toSize ();
      notesFileName = settings.value ("notesFileName","desktop_notes.rss").toString ();
      iconFileName = settings.value ("iconFileName",":/images/burn.png").toString ();
      setWindowIcon (QIcon (iconFileName));
      resize (size);
      move (pos);
}
 
void PTray::setVisible (bool visible)
{
      minimizeAction->setEnabled (visible);
      maximizeAction->setEnabled (!isMaximized ());
      restoreAction->setEnabled (isMaximized () || !visible);
      PNoteEditor::setVisible (visible);
}
 
void PTray::closeEvent (QCloseEvent *event)
{
      if (trayIcon->isVisible () && !warnOnClose)
      {
            QMessageBox::information (this, tr ("Pense bête"),
                                 tr ("Le programme continuera de fonctionner dans la "
                                     "barre des tâches. Pour quitter le programme, "
                                     "choisissez <b>Quitter</b> dans le menu contectuel "
                                     "d'entré de la barre des tâches."));
            warnOnClose = true;
            hide ();
            event->ignore ();
      }
      else if (warnOnClose)
      {
            hide ();
            event->ignore ();
      }
}
 
void PTray::iconActivated (QSystemTrayIcon::ActivationReason reason)
{
      switch (reason)
      {
            case QSystemTrayIcon::Trigger:
                  if (isVisible ())
                  {
                        setVisible (false);
                  }
                  else
                  {
                        showNormal ();
                  }
                  break;
            case QSystemTrayIcon::DoubleClick:
                  break;
            case QSystemTrayIcon::MiddleClick:
                  showMessage ();
                  break;
            default:
                  ;
      }
}
 
void PTray::showConfigDialog ()
{
      setVisible (true);
      PConfigDialog *config = new PConfigDialog (this);
      config->setMinimumSize (config->size ());
      config->setMaximumSize (config->size ());
      connect (config, SIGNAL (noteRemoved (QAction *)),this, SLOT (removeActionFromHistory (QAction *)));
      connect (config, SIGNAL (settingsUpdated ()),this, SLOT (on_settingsUpdated ()));
      config->setNoteList (history);
      config->show ();
}
 
void PTray::on_settingsUpdated ()
{
      readSettings ();
      trayIcon->setIcon (QIcon (iconFileName));
}
 
void PTray::removeActionFromHistory (QAction *action)
{
      if (action != currentNoteAction)
      {
            history->removeAction (action);
            trayIconMenu->removeAction (action);
      }
}
 
void PTray::showMessage ()
{
      trayIcon->showMessage (noteTitle (), noteText (), QSystemTrayIcon::Information,15 * 1000);
}
 
void PTray::messageClicked ()
{
      showNormal ();
}
 
void PTray::on_noteTitleChanged (const QString &str)
{
      QAction *ita = history->checkedAction ();
      ita->setText (str);
}
 
void PTray::on_noteTextChanged (const QString &str)
{
      QAction *ita = history->checkedAction ();
      ita->setToolTip (str);
}
 
void PTray::addNoteToHistory (const QString &title, const QString &body)
{
      QAction *oldNote = new QAction (title, this);
      oldNote->setToolTip (body);
      oldNote->setCheckable (true);
      oldNote->setChecked (false);
      connect (oldNote, SIGNAL (triggered ()), this, SLOT (editNote ()));
      trayIconMenu->addAction (oldNote);
      history->addAction (oldNote);
}
 
void PTray::newNote ()
{
      setVisible (true);
      addNoteToHistory (noteTitle (), noteText ());
      setNoteTitle ("");
      setNoteText ("");
      writeNotes ();
}
 
void PTray::editNote ()
{
      QAction *action = qobject_cast<QAction*> (sender ());
      if (action)
      {
            setNoteTitle (action->text ());
            setNoteText (action->toolTip ());
      }
}
 
void PTray::quitTray ()
{
      writeNotes ();
      writeSettings ();
      qApp->quit ();
}
 
void PTray::createActions ()
{
      minimizeAction = new QAction (tr ("Réduire la fenêtre"), this);
      minimizeAction->setIcon (QIcon (":/images/minimize.png"));
      connect (minimizeAction, SIGNAL (triggered ()), this, SLOT (hide ()));
      maximizeAction = new QAction (tr ("Agrandir la fenêtre"), this);
      maximizeAction->setIcon (QIcon (":/images/maximize.png"));
      connect (maximizeAction, SIGNAL (triggered ()), this, SLOT (showMaximized ()));
      restoreAction = new QAction(tr("Restaurer"), this);
      restoreAction->setIcon (QIcon (":/images/restaure.png"));
      connect (restoreAction, SIGNAL (triggered ()), this, SLOT (showNormal ()));
      quitAction = new QAction (tr ("Quitter"), this);
      quitAction->setIcon (QIcon (":/images/exit.png"));
      connect (quitAction, SIGNAL (triggered ()), this, SLOT (quitTray ()));
      newNoteAction = new QAction (tr ("Nouvelle note"), this);
      newNoteAction->setIcon (QIcon (":/images/list_add.png"));
      connect (newNoteAction , SIGNAL (triggered ()), this, SLOT (newNote ()));
      currentNoteAction = new QAction (tr ("Note en cours"), this);
      connect (currentNoteAction , SIGNAL (triggered ()), this, SLOT (editNote ()));
      configAction = new QAction (tr ("Configurer"), this);
      configAction->setIcon (QIcon (":/images/configure.png"));
      connect (configAction, SIGNAL (triggered ()), this, SLOT (showConfigDialog ()));
      history = new QActionGroup (this);
      history->addAction (currentNoteAction);
      currentNoteAction->setCheckable (true);
      currentNoteAction->setChecked (true);
}
 
void PTray::createTrayIcon ()
{
      trayIconMenu = new QMenu (this);
      trayIconMenu->addAction (minimizeAction);
      trayIconMenu->addAction (maximizeAction);
      trayIconMenu->addAction (restoreAction);
      trayIconMenu->addSeparator ();
      trayIconMenu->addAction (configAction);
      trayIconMenu->addAction (newNoteAction);
      trayIconMenu->addAction (currentNoteAction);
      trayIconMenu->addSeparator ();
      trayIconMenu->addAction (quitAction);
      trayIcon = new QSystemTrayIcon (this);
      trayIconMenu->addSeparator ();
      trayIcon->setContextMenu (trayIconMenu);
      trayIcon->setIcon (QIcon (iconFileName));
}
main.cpp
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#include <QtGui>
#include "ptray.h"
 
int main (int argc, char **argv)
{
      QApplication app(argc, argv);
      if (!QSystemTrayIcon::isSystemTrayAvailable ())
      {
            QMessageBox::critical (0, QObject::tr ("Pense bête"),
                              QObject::tr ("Aucune barre des tâches n'a été détecté "
                                          "sur ce système."));
 
            return 1;
      }
      PTray window;
 
      return app.exec();
}
Pour information je l'ai passé sous gdb et il me dit que l'erreur survient a la ligne:

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PTray window;
Dans le main. Voici le rapport:

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Program terminated with signal 11, Segmentation fault.
[New process 9830]
#0  0xb78df368 in ?? () from /usr/lib/libQtGui.so.4
(gdb) b main
Breakpoint 1 at 0x804f3c5: file main.cpp, line 6.
(gdb) r
Starting program: /home/...... 
[Thread debugging using libthread_db enabled]
[New Thread 0xb70beb60 (LWP 9843)]
[Switching to Thread 0xb70beb60 (LWP 9843)]
 
Breakpoint 1, main (argc=1, argv=0xbf85ee64) at main.cpp:6
6       QApplication app(argc, argv);
(gdb) n
Qt: gdb: -nograb added to command-line options.
Use the -dograb option to enforce grabbing.
7       if (!QSystemTrayIcon::isSystemTrayAvailable ())
(gdb) n
15       PTray window;
(gdb) n
 
Program received signal SIGSEGV, Segmentation fault.
0xb797e368 in ?? () from /usr/lib/libQtGui.so.4
Merci d'avance