How to keep System tray icons

[mkkguru]

Hi All,
I have to keep System tray icon when i executed my application..below is the code i written its working but the icon is not visible.

QIcon icon;
     icon.addPixmap(QPixmap(QString::fromUtf8(":/images/home.png")),
     QIcon::Normal, QIcon::Off);
 
        tray.setIcon(QIcon( icon));//":/images/home.png"));
        tray.setContextMenu(&cmenu);
        connect(&tray, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
                        this, SLOT(trayActivated(QSystemTrayIcon::ActivationReason)));
 
 
     void abc::trayActivated(QSystemTrayIcon::ActivationReason reason)
{
        switch(reason)
        {
                case QSystemTrayIcon::Trigger:
                {
                        if(isHidden()) show();
                        else hide();
                        break;
                }
                default: break;
        }
}

QIcon icon;
     icon.addPixmap(QPixmap(QString::fromUtf8(":/images/home.png")),
     QIcon::Normal, QIcon::Off);
   
        tray.setIcon(QIcon( icon));//":/images/home.png"));
        tray.setContextMenu(&cmenu);
        connect(&tray, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
                        this, SLOT(trayActivated(QSystemTrayIcon::ActivationReason)));


     void abc::trayActivated(QSystemTrayIcon::ActivationReason reason)
{
        switch(reason)
        {
                case QSystemTrayIcon::Trigger:
                {
                        if(isHidden()) show();
                        else hide();
                        break;
                }
                default: break;
        }
}

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plz can anyone give idea about this.........

regards,
mkkguru

[Lykurg]

Seems you have to create your QSystemTrayIcon on the heap!

[Corinzio]

For what i see you show the icon only on response of a QSystemTrayIcon::Trigger event but that reason is sended only when "The system tray entry was clicked" but that's impossible if you haven't already showed it up with show....

[mkkguru]

Is there any possiblility to show my icon at systemtray.........?plz give me idea regarding this..........

[mkkguru]

Seems you have to create your QSystemTrayIcon on the heap!

How to create QSystemTrayIcon on the heap??plz give me some idea.

[Lykurg]

How to create QSystemTrayIcon on the heap??plz give me some idea.

show us all your relevant code! The part you posted is confusing and "wrong". On the heap I mean:

class Foo {
//...
private:
  QSystemTrayIcon *tray;
}
 
Foo:Foo() {
//...
  tray = new QSystemTrayIcon(this);
}

class Foo {
//...
private:
  QSystemTrayIcon *tray;
}

Foo:Foo() {
//...
  tray = new QSystemTrayIcon(this);
}

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[Corinzio]

just after

connect(&tray, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
this, SLOT(trayActivated(QSystemTrayIcon::ActivationReason)));

connect(&tray, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
this, SLOT(trayActivated(QSystemTrayIcon::ActivationReason)));

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put

tray.show()

tray.show()

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[mkkguru]

just after

connect(&tray, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
this, SLOT(trayActivated(QSystemTrayIcon::ActivationReason)));

connect(&tray, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
this, SLOT(trayActivated(QSystemTrayIcon::ActivationReason)));

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put

tray.show()

tray.show()

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i did but it no use still the error is comming as below

................................
QSystemTrayIcon::setVisible: No Icon set

................................
QSystemTrayIcon::setVisible: No Icon set

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so how to set icon to systemtray

[mkkguru]

I updated the code as follows still the error coming as QSystemTrayIcon::setVisible: No Icon set

void  foo ::createTrayIcon()
 { 
  QIcon icon;
        icon =  QIcon(QPixmap( ":/images/new.png" ) );
         tray = new QSystemTrayIcon(icon,this);
        tray->setContextMenu(cmenu);
        tray->setIcon(icon);
        tray->setVisible(true);
        setWindowIcon(icon);
        tray->show();
         connect(tray, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
             this, SLOT(iconActivated(QSystemTrayIcon::ActivationReason)));
 }
 
void foo::iconActivated(QSystemTrayIcon::ActivationReason reason)
{
 
     switch (reason) {
     case QSystemTrayIcon::Trigger:
          tray->show();
     case QSystemTrayIcon::DoubleClick:
              break;
     case QSystemTrayIcon::MiddleClick:
         //  showMessage();
         break;
     default:
         ;
     }

void  foo ::createTrayIcon()
 { 
  QIcon icon;
        icon =  QIcon(QPixmap( ":/images/new.png" ) );
         tray = new QSystemTrayIcon(icon,this);
        tray->setContextMenu(cmenu);
        tray->setIcon(icon);
        tray->setVisible(true);
        setWindowIcon(icon);
        tray->show();
         connect(tray, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
             this, SLOT(iconActivated(QSystemTrayIcon::ActivationReason)));
 }

void foo::iconActivated(QSystemTrayIcon::ActivationReason reason)
{

     switch (reason) {
     case QSystemTrayIcon::Trigger:
          tray->show();
     case QSystemTrayIcon::DoubleClick:
              break;
     case QSystemTrayIcon::MiddleClick:
         //  showMessage();
         break;
     default:
         ;
     }

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Plz give some idea regarding this.................thanks in advance.....

[Corinzio]

I think you should create the QIcon on the heap with new.
In your code the QIcon icon goes out of scope when the foo::createTrayIcon() functions ends...

i'm not sure....
sorry

[Lykurg]

I think you should create the QIcon on the heap with new.
In your code the QIcon icon goes out of scope when the foo::createTrayIcon() functions ends...

i'm not sure....
sorry

No better create it on the stack. It is copied to the system tray icon instance. Try that code in your main window:

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
 
  // BEGIN HERE
    QIcon icon = QIcon("/data/misc/nuvola/32x32/apps/kcmsystem.png");
    QSystemTrayIcon *tray = new QSystemTrayIcon(icon, this);
    tray->show();
  // END HERE
}

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);

  // BEGIN HERE
    QIcon icon = QIcon("/data/misc/nuvola/32x32/apps/kcmsystem.png");
    QSystemTrayIcon *tray = new QSystemTrayIcon(icon, this);
    tray->show();
  // END HERE
}

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and see if it works. Works fine on my machine. And make sure your resource system works fine and your png is actually found.