Problem using System Tray Icon....

[Bong.Da.City]

Hi i am trying to make a System Tray Icon to be shown everytime i minimize my application......

if (isMinimized()) {
trayIcon->show();
enum MessageIcon { NoIcon, Information, Warning, Critical };
QSystemTrayIcon::MessageIcon icon = QSystemTrayIcon::MessageIcon(Information);
trayIcon->showMessage("titlos", "mplampla", icon, 10000);
emit minimized();}

So my problem is that the System Tray Icon is been shown the the top left of the computer and not at my trayicon.... What should i do?

[squidge]

Unlikely to be your problem, but still, I must ask why you declare your own enum rather than using the types built into QSystemTrayIcon ?

Also, you shouldn't depend on showMessage, as supportsMessages() may return false on some platforms.

[wysota]

show() doesn't cause the icon to appear, it only tells the system you want it to appear. If you showMessage() when the icon is invisible, it is likely the message gets wrong geometry because of invalid geometry of the tray icon.

[Bong.Da.City]

Ok so what should i put instead of the source code i gived you? I had replaced showMessage() with show() but i have an error (void value not ignored as it ought to be)

[wysota]

Ok so what should i put instead of the source code i gived you?
Hard to say as I don't know what you're trying to do but the easiest thing you can try is to call

QApplication::sendPostedEvents(trayIcon);
after calling show() on the tray icon object.

[Bong.Da.City]

I had found an example from here (http://cep.xor.aps.anl.gov/software/qt4-x11-4.2.2/desktop-systray.html).. But even this project is is working i cannot do that to my own... Any ideas?

Ps.. because you will spend a lot of time to make the project of the example i can give you just the exe file.. 5119

[wysota]

But even this project is is working i cannot do that to my own...
This project works because it doesn't show the message right after calling show() on the tray icon. Your does and thus it probably fails.

[Bong.Da.City]

Xmm i think that you are right... But the point of the system trayicon message is to be shown after the application is minimized...
i had putted just now sleep(1) bu now when you minimize the application it sleeps for 1 sec and then show the tray.icon and the message again on the top left..
Pff... What sould i do... ?

[wysota]

I have already told you what to do. Read post #5 in this thread again.

[Bong.Da.City]

It doesn't work.. look at the code.. is it what you mean?


if (isMinimized()) {
trayIcon->show();
QApplication::sendPostedEvents(trayIcon);
emit minimized();
enum MessageIcon { NoIcon, Information, Warning, Critical };
QSystemTrayIcon::MessageIcon icon = QSystemTrayIcon::MessageIcon(Information);
trayIcon->showMessage("titlos", "mplampla", icon, 10000);
}

Error: no matching function for call to ‘QCoreApplication::sendPostedEvents(QSystemT rayIcon*&)’

[wysota]

Error: no matching function for call to ‘QCoreApplication::sendPostedEvents(QSystemT rayIcon*&)’
Obviously the error message is correct. Look at the signature of sendPostedEvents() in the docs.

[Bong.Da.City]

if (isMinimized()) {
trayIcon->show();
QCoreApplication::sendPostedEvents(QSystemTrayIcon *&);
enum MessageIcon { NoIcon, Information, Warning, Critical };
QSystemTrayIcon::MessageIcon icon = QSystemTrayIcon::MessageIcon(Information);
trayIcon->showMessage("titlos", "mplampla", icon, 10000);
emit minimized();}

error: expected primary-expression before ‘*’ token
error: expected primary-expression before ‘)’ token

[wysota]

Think, don't act blind. First of all the method has two arguments. Second of all use proper C++.

[Bong.Da.City]

Just think that i am still a beginner... Could you explain me more?

[wysota]

Just think that i am still a beginner... Could you explain me more?

Run the code I gave you earlier but add the second argument to it, just like the docs say. You have read the reference manual for this method, right? You have seen it takes two arguments and not one like in my code, right? You understand what values you can pass as the second argument, yes?

[squidge]

Just think that i am still a beginner... Could you explain me more?

Even a beginner to Qt should have a solid knowledge in C++, otherwise you are just going to struggle with it at every turn.