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#include "tray.h"

Tray::Tray(QWidget *parent) :
    QWidget(parent)
{
    createActions();
    createTrayIcon();
    setIcon();

    trayIcon->show();
}

void Tray::createActions()
{
    open = new QAction(tr("&Open"), this);
    connect(open, SIGNAL(triggered()), this, SLOT(show()));


    close = new QAction(tr("&Quit"), this);
    connect(close, SIGNAL(triggered()), qApp, SLOT(quit()));
}

void Tray::createTrayIcon()
{
    trayIconMenu = new QMenu(this);


    trayIconMenu->addAction(open);
    trayIconMenu->addSeparator();
    trayIconMenu->addAction(close);


    trayIcon = new QSystemTrayIcon(this);
    trayIcon->setContextMenu(trayIconMenu);


    connect(trayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason)), this, SLOT(trayIconClicked(QSystemTrayIcon::ActivationReason)));
}

void Tray::setIcon()
{
    trayIcon->setIcon(QIcon(":/tray.ico"));
}

void Tray::trayIconClicked(QSystemTrayIcon::ActivationReason reason)
{
    if(reason == QSystemTrayIcon::Trigger)
        this->show();
}

void Tray::closeEvent(QCloseEvent *event)
{
    if (trayIcon->isVisible()) {
        trayIcon->showMessage(tr("Still here!!!"),
                              tr("This application is still running. To quit please click this icon and select Quit"));
        hide();


        event->ignore();
    }
}

Tray::~Tray()
{
    delete trayIcon;
    delete trayIconMenu;
    delete open;
    delete close;
}

#ifndef TRAY_H
#define TRAY_H

#include <QtGui>
#include <QWidget>
#include <QSystemTrayIcon>
#include <QCloseEvent>


class QMenu;

class Tray : public QWidget
{
    Q_OBJECT

public:
    explicit Tray(QWidget *parent = 0);
    ~Tray();

private:
    void createActions();
    void createTrayIcon();
    void setIcon();
    void closeEvent(QCloseEvent *); 

    QSystemTrayIcon *trayIcon;
    QMenu *trayIconMenu;

    QAction *open;
    QAction *close;

private slots:
    void trayIconClicked(QSystemTrayIcon::ActivationReason);
};

#endif // TRAY_H

#include "tray.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    if (!QSystemTrayIcon::isSystemTrayAvailable())
    {
        QMessageBox::critical(0, QObject::tr("Tray"),
                              QObject::tr("I couldn't detect any system tray "
                                          "on this system."));
        return 1;
    }

    QApplication::setQuitOnLastWindowClosed(false);

    Tray w;
    w.show();
    
    return a.exec();
}

Tray w;
w.show();

#include "mainwindow.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;

    if(onlyTray)
        w.showTray();
    else
        w.show();
    
    return a.exec();
}

#include "ui_mainwindow.h"

class QSystemTrayIcon;
class QAction;
class QMenu;

class MainWindow : public QMainWindow, private Ui::MainWindow
{
    Q_OBJECT

private:
    QSystemTrayIcon *trayIcon;
    QAction *quitAction;
    QMenu *trayIconMenu;
public:
    explicit MainWindow(QWidget *parent = 0);

    void showTray();
};

const bool onlyTray=true;

#include "mainwindow.h"
#include <QSystemTrayIcon>

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent)
{
    setupUi(this);
}

void MainWindow::showTray(){
    // создание иконки
    trayIconMenu = new QMenu(this);
    quitAction = new QAction(tr("Выход"), this);
    connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
    trayIconMenu->addAction(quitAction);

    trayIcon = new QSystemTrayIcon(this);
    trayIcon->setContextMenu(trayIconMenu);
    trayIcon->setIcon(QIcon(":/blueflag.png"));
    trayIcon->setToolTip(this->windowTitle());
    trayIcon->show();
}

QSystemTrayIcon *tray;
QMenu *trayMenu;

QSystemTrayIcon tray;
QMenu trayMenu;

QMenu trayMenu;
trayMenu.addSeparator();

QMenu *trayMenu;
trayMenu = new Qmenu;
trayMenu->addSeparator();