About QMessageBox close my tray application

[Doles]

Hi everyone,
I have a trouble with QMessageBox::about(). My application works in tray icon. I created it using example source code from documentation. I have a QWidget, and when I click the "X" button my program still works in tray. And that`s cool. When this QWidget window is visible and I click the "About Application" item from TrayIcon menu my program doesn`t quit. BUT when the window is invisible (I mean just closed) and I click the about action item, whole program exits. It doesn`t matter if i use "X" button or PushButton. I was trying to change this invocation:

void QIP::about()
{
 QMessageBox::about(this ,tr("About Application"),tr("<b> QIP v 0.2 </b><br/>"
						    "------------------<br/>"
						    "<b>Q</b>uick <b>I</b>p or <b>Q</b>t <b>I</b>p <br/>"
						    "2008 by Bartosz Dolewski"));
}

void QIP::about()
{
 QMessageBox::about(this ,tr("About Application"),tr("<b> QIP v 0.2 </b><br/>"
						    "------------------<br/>"
						    "<b>Q</b>uick <b>I</b>p or <b>Q</b>t <b>I</b>p <br/>"
						    "2008 by Bartosz Dolewski"));
}

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to this one:

void QIP::about()
{
 QMessageBox::about(NULL ,tr("About Application"),tr("<b> QIP v 0.2 </b><br/>"
						    "------------------<br/>"
						    "<b>Q</b>uick <b>I</b>p or <b>Q</b>t <b>I</b>p <br/>"
						    "2008 by Bartosz Dolewski"));
}

void QIP::about()
{
 QMessageBox::about(NULL ,tr("About Application"),tr("<b> QIP v 0.2 </b><br/>"
						    "------------------<br/>"
						    "<b>Q</b>uick <b>I</b>p or <b>Q</b>t <b>I</b>p <br/>"
						    "2008 by Bartosz Dolewski"));
}

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It wasn`t change anything, maybe this about messagebox had not my icon from main window. Does anybody have some ideas ?
There are source code of whole *.cpp file:

/***************************************************************************
 *   Copyright (C) 2008 by Bartosz Dolewski  
 *   E-mail: [email]doles2@gmail.com[/email]   
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/
#include "qip.h"
 
QIP::QIP(QWidget *parent, Qt::WFlags f) : QWidget(parent,f)
{
  ui.setupUi(this);
 
  QTextCodec::setCodecForTr (QTextCodec::codecForName ("UTF-8"));
  setWindowTitle("QIP");
  qDebug()<<"Program has started...\n";
 
  createNetworkList();
  createTrayIcon();
  createConnections();
  //this->hide();
}
 
void QIP::createNetworkList()
{
  //first of all we have to fill up our QList with interfaces which are found in this machine
  qDebug()<<"Creating list of founded networks...\n";
  networkList = QNetworkInterface::allInterfaces ();
  foreach(QNetworkInterface NetInter, networkList)
  {
    if(NetInter.isValid())
    {
     ui.comboBox1->addItem(NetInter.name());
    }
  }
 qDebug()<<"\t[+] NetworkList is done\n";
}
 
void QIP::closeEvent(QCloseEvent *event)
 {
 //this function is a reimpletementation of closeEvent from QWidget.
 //We would like to not quit from program if the user will click the X button of our window :)
 //Just ignore this event, when X button is clicked, close the window not whole application
     if (trayIcon->isVisible())
     {
	hide();
        event->ignore();
	isHidden = true;
	showHideAction->setText( tr("Show"));
     }
 }
 
void QIP::createTrayIcon()
{
  qDebug()<<"Building tray icon....\n";	
  icon		   = QIcon (QString(":images/tray_icon.xpm"));
  trayIcon         = new QSystemTrayIcon;
  contextMenu      = new QMenu;
  showHideAction   = new QAction(tr("Show"), this);
  aboutApplication = new QAction(tr("About Application"),this);
  quitApplication  = new QAction(tr("Quit Application"),this);
  isHidden = false;	 
  trayIcon->setIcon(icon);
 
  contextMenu->addAction(showHideAction);
  contextMenu->addSeparator();
  contextMenu->addAction(aboutApplication);
  contextMenu->addSeparator();
  contextMenu->addAction(quitApplication);
  contextMenu->setDefaultAction(showHideAction);
  qDebug()<<"\t[+] Tray icon has built\n";
 
 
  showHideAction->setText( tr("Hide")); //default action :) We have just started and the window is visible
  trayIcon->setContextMenu(contextMenu);
  trayIcon->show();
}
 
void QIP::createConnections()
{
  qDebug()<<"Building connections...\n";
  connect(ui.pushButton1, SIGNAL(clicked()), 	  this, SLOT(showIP()));
  connect(ui.pushButton2, SIGNAL(clicked()), 	  this, SLOT(showMAC()));
  connect(ui.pushButton3, SIGNAL(clicked()),	  this, SLOT(showBroadcast()));
  connect(ui.pushButton4, SIGNAL(clicked()), 	  this, SLOT(showNetmask()));
  connect(ui.pushButton5, SIGNAL(clicked()),	  this, SLOT(refreshEverything()));
  connect(ui.comboBox1,   SIGNAL(activated(int)), this, SLOT(setInterface(int)));
  //connections from TrayIcon
  connect(showHideAction,   SIGNAL(triggered()), this, SLOT(showHide()));
  connect(quitApplication,  SIGNAL(triggered()), qApp, SLOT(quit()));
  connect(aboutApplication, SIGNAL(triggered()), this, SLOT(about()));
  //this line are also from TrayIcon :)
  connect(trayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason)), this, SLOT(trayIconClicked(QSystemTrayIcon::ActivationReason)));
  qDebug()<<"\t[+] Connections have already created....\n";
}
 
void QIP::showIP()
{
  qDebug()<<"showIP()...\n";
  trayIcon->setToolTip("IP: " + ip);
 if ( networkInterface.isValid() )
    {
        QList<QNetworkAddressEntry> entry = networkInterface.addressEntries();
        ip = entry.at(0).ip().toString();
    }
    else
    {
        ip = "unknown";
    }
 
 if (ui.lineEdit1->text() != ip)
    {
	qDebug()<<"Setting IP adres to lineEdit1...\n";
	ui.lineEdit1->setText(ip);
	qDebug()<<"\t[+] Done...\n";
    }
}
void QIP::showMAC()
{
 qDebug()<<"showMAC()...\n";
	if(networkInterface.isValid() )
	{
		mac = networkInterface.hardwareAddress();
	}
	else
	{
		mac = "unknown";
	}
 
	if (ui.lineEdit2->text() != mac)
	{
		qDebug()<<"Setting up hardware address...\n";
		ui.lineEdit2->setText(mac);
		qDebug()<<"\t[+] Done...\n";
	}
 
}
 
void QIP::showBroadcast()
{
 qDebug()<<"showBroadcast...\n";
	if(networkInterface.isValid())
	{
		//broadcast = networkInterface.broadcast();
		 QList<QNetworkAddressEntry> entry = networkInterface.addressEntries();
        	 broadcast = entry.at(0).broadcast().toString();
	}
	else
	{
		broadcast = "unknown";
	}
	if(ui.lineEdit3->text() != broadcast)
	{
		qDebug()<<"Setting up broadcast address...\n";
		ui.lineEdit3->setText(broadcast);
		qDebug()<<"\t[+] Done...\n";
	}
}
void QIP::showNetmask()
{
 qDebug()<<"showNetmask()...\n";
	if(networkInterface.isValid())
	{
		//netmask = networkInterface.netmask();
		 QList<QNetworkAddressEntry> entry = networkInterface.addressEntries();
        	 netmask = entry.at(0).netmask().toString();
	}
	else
	{
		netmask = "unknown";
	}
	if(ui.lineEdit4->text() != netmask)
	{
		qDebug()<<"Setting up netmask address...\n";
		ui.lineEdit4->setText(netmask);
		qDebug()<<"\t[+] Done...\n";
	}
}
 
void QIP::refreshEverything()
{
	qDebug()<<"Refreshing all fields...\n";
	emit showIP();
	emit showMAC();
	emit showBroadcast();
	emit showNetmask();
	qDebug()<<"\t[+] Done...\n";
}
 
void QIP::showHide()
{
    if ( isHidden )
    {
        this->show();
        showHideAction->setText( tr("Hide"));
        isHidden = false;
    }
 
    else
    {
        this->hide();
        showHideAction->setText( tr("Show"));
        isHidden = true;
    }
}
 
 
void QIP::trayIconClicked( QSystemTrayIcon::ActivationReason reason )
{
    if ( reason == QSystemTrayIcon::Trigger )
    {
        emit showHide();
    }
}
 
void QIP::about()
{
 QMessageBox::about(this ,tr("About Application"),tr("<b> QIP v 0.2 </b><br/>"
						    "------------------<br/>"
						    "<b>Q</b>uick <b>I</b>p or <b>Q</b>t <b>I</b>p <br/>"
						    "2008 by Bartosz Dolewski"));
}
 
void QIP::setInterface(int index)
{
 qDebug()<<"Setting up new interface...\n";
 networkInterface = networkList.at(index);
 qDebug()<<"Network name: "<<networkInterface.name();
 qDebug()<<"\t[+] Done...\n";
}

/***************************************************************************
 *   Copyright (C) 2008 by Bartosz Dolewski  
 *   E-mail: [email]doles2@gmail.com[/email]   
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/
#include "qip.h"

QIP::QIP(QWidget *parent, Qt::WFlags f) : QWidget(parent,f)
{
  ui.setupUi(this);

  QTextCodec::setCodecForTr (QTextCodec::codecForName ("UTF-8"));
  setWindowTitle("QIP");
  qDebug()<<"Program has started...\n";
  
  createNetworkList();
  createTrayIcon();
  createConnections();
  //this->hide();
}

void QIP::createNetworkList()
{
  //first of all we have to fill up our QList with interfaces which are found in this machine
  qDebug()<<"Creating list of founded networks...\n";
  networkList = QNetworkInterface::allInterfaces ();
  foreach(QNetworkInterface NetInter, networkList)
  {
    if(NetInter.isValid())
    {
     ui.comboBox1->addItem(NetInter.name());
    }
  }
 qDebug()<<"\t[+] NetworkList is done\n";
}

void QIP::closeEvent(QCloseEvent *event)
 {
 //this function is a reimpletementation of closeEvent from QWidget.
 //We would like to not quit from program if the user will click the X button of our window :)
 //Just ignore this event, when X button is clicked, close the window not whole application
     if (trayIcon->isVisible())
     {
	hide();
        event->ignore();
	isHidden = true;
	showHideAction->setText( tr("Show"));
     }
 }

void QIP::createTrayIcon()
{
  qDebug()<<"Building tray icon....\n";	
  icon		   = QIcon (QString(":images/tray_icon.xpm"));
  trayIcon         = new QSystemTrayIcon;
  contextMenu      = new QMenu;
  showHideAction   = new QAction(tr("Show"), this);
  aboutApplication = new QAction(tr("About Application"),this);
  quitApplication  = new QAction(tr("Quit Application"),this);
  isHidden = false;	 
  trayIcon->setIcon(icon);

  contextMenu->addAction(showHideAction);
  contextMenu->addSeparator();
  contextMenu->addAction(aboutApplication);
  contextMenu->addSeparator();
  contextMenu->addAction(quitApplication);
  contextMenu->setDefaultAction(showHideAction);
  qDebug()<<"\t[+] Tray icon has built\n";

  
  showHideAction->setText( tr("Hide")); //default action :) We have just started and the window is visible
  trayIcon->setContextMenu(contextMenu);
  trayIcon->show();
}

void QIP::createConnections()
{
  qDebug()<<"Building connections...\n";
  connect(ui.pushButton1, SIGNAL(clicked()), 	  this, SLOT(showIP()));
  connect(ui.pushButton2, SIGNAL(clicked()), 	  this, SLOT(showMAC()));
  connect(ui.pushButton3, SIGNAL(clicked()),	  this, SLOT(showBroadcast()));
  connect(ui.pushButton4, SIGNAL(clicked()), 	  this, SLOT(showNetmask()));
  connect(ui.pushButton5, SIGNAL(clicked()),	  this, SLOT(refreshEverything()));
  connect(ui.comboBox1,   SIGNAL(activated(int)), this, SLOT(setInterface(int)));
  //connections from TrayIcon
  connect(showHideAction,   SIGNAL(triggered()), this, SLOT(showHide()));
  connect(quitApplication,  SIGNAL(triggered()), qApp, SLOT(quit()));
  connect(aboutApplication, SIGNAL(triggered()), this, SLOT(about()));
  //this line are also from TrayIcon :)
  connect(trayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason)), this, SLOT(trayIconClicked(QSystemTrayIcon::ActivationReason)));
  qDebug()<<"\t[+] Connections have already created....\n";
}

void QIP::showIP()
{
  qDebug()<<"showIP()...\n";
  trayIcon->setToolTip("IP: " + ip);
 if ( networkInterface.isValid() )
    {
        QList<QNetworkAddressEntry> entry = networkInterface.addressEntries();
        ip = entry.at(0).ip().toString();
    }
    else
    {
        ip = "unknown";
    }

 if (ui.lineEdit1->text() != ip)
    {
	qDebug()<<"Setting IP adres to lineEdit1...\n";
	ui.lineEdit1->setText(ip);
	qDebug()<<"\t[+] Done...\n";
    }
}
void QIP::showMAC()
{
 qDebug()<<"showMAC()...\n";
	if(networkInterface.isValid() )
	{
		mac = networkInterface.hardwareAddress();
	}
	else
	{
		mac = "unknown";
	}

	if (ui.lineEdit2->text() != mac)
	{
		qDebug()<<"Setting up hardware address...\n";
		ui.lineEdit2->setText(mac);
		qDebug()<<"\t[+] Done...\n";
	}

}

void QIP::showBroadcast()
{
 qDebug()<<"showBroadcast...\n";
	if(networkInterface.isValid())
	{
		//broadcast = networkInterface.broadcast();
		 QList<QNetworkAddressEntry> entry = networkInterface.addressEntries();
        	 broadcast = entry.at(0).broadcast().toString();
	}
	else
	{
		broadcast = "unknown";
	}
	if(ui.lineEdit3->text() != broadcast)
	{
		qDebug()<<"Setting up broadcast address...\n";
		ui.lineEdit3->setText(broadcast);
		qDebug()<<"\t[+] Done...\n";
	}
}
void QIP::showNetmask()
{
 qDebug()<<"showNetmask()...\n";
	if(networkInterface.isValid())
	{
		//netmask = networkInterface.netmask();
		 QList<QNetworkAddressEntry> entry = networkInterface.addressEntries();
        	 netmask = entry.at(0).netmask().toString();
	}
	else
	{
		netmask = "unknown";
	}
	if(ui.lineEdit4->text() != netmask)
	{
		qDebug()<<"Setting up netmask address...\n";
		ui.lineEdit4->setText(netmask);
		qDebug()<<"\t[+] Done...\n";
	}
}

void QIP::refreshEverything()
{
	qDebug()<<"Refreshing all fields...\n";
	emit showIP();
	emit showMAC();
	emit showBroadcast();
	emit showNetmask();
	qDebug()<<"\t[+] Done...\n";
}

void QIP::showHide()
{
    if ( isHidden )
    {
        this->show();
        showHideAction->setText( tr("Hide"));
        isHidden = false;
    }

    else
    {
        this->hide();
        showHideAction->setText( tr("Show"));
        isHidden = true;
    }
}


void QIP::trayIconClicked( QSystemTrayIcon::ActivationReason reason )
{
    if ( reason == QSystemTrayIcon::Trigger )
    {
        emit showHide();
    }
}

void QIP::about()
{
 QMessageBox::about(this ,tr("About Application"),tr("<b> QIP v 0.2 </b><br/>"
						    "------------------<br/>"
						    "<b>Q</b>uick <b>I</b>p or <b>Q</b>t <b>I</b>p <br/>"
						    "2008 by Bartosz Dolewski"));
}

void QIP::setInterface(int index)
{
 qDebug()<<"Setting up new interface...\n";
 networkInterface = networkList.at(index);
 qDebug()<<"Network name: "<<networkInterface.name();
 qDebug()<<"\t[+] Done...\n";
}

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Thanks for any help,
Regards Bartek

PS: Sorry for my english (maybe "engrish" )

[caduel]

have you unset QApplication::setQuitOnLastWindowClosed()?

[Doles]

No I haven`t unset it. Even more I didn`t know about this function at all I`ve added this code to the main.cpp file because there is included <QApplication> and my program works great. Thank you caduel