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::ActivationReas on)));


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



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]

Seems you have to create your QSystemTrayIcon on the heap!

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

[mkkguru]

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

[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);
}

[Corinzio]

just after


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

put


tray.show()

[mkkguru]

just after


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

put


tray.show()

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




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



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::ActivationReas on)));
}

void foo::iconActivated(QSystemTrayIcon::ActivationReas on reason)
{

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


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