Tray icon & taskbar app button hide

[been_1990]

I want to have my application to be maximized while being shown at the systray in Windows. I tried this (following the QT Demos):


private:
QSystemTrayIcon *trayIcon;
..............{}.................
trayIcon->setVisible(true);
trayIcon->show();

But that only crashes the application. And I'm clueless. I also needed to have the app's taskbar button to hide itself. I did some searching but didnt find anything up-to-date. Any help is welcome and thanked.:D

[Fastman]

For example:

app.h


private:
QSystemTrayIcon *trayIcon;
QMenu *trayIconMenu;

QAction *minimizeAction;
QAction *maximizeAction;
QAction *restoreAction;
QAction *quitAction;

void createActions();
void createTrayIcon();
void showMessage();


app.cpp


app::app(QWidget *parent, Qt::WFlags flags)
: QDialog(parent, flags)
{
...
createActions();
createTrayIcon();
trayIcon->setIcon(QIcon(QString::fromUtf8(":/app/Resources/Add.png")));
trayIcon->show();
connect(trayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason )),
this, SLOT(iconActivated(QSystemTrayIcon::ActivationReas on)));
...
}

void app::createActions()
{
minimizeAction = new QAction(tr("Mi&nimize"), this);
connect(minimizeAction, SIGNAL(triggered()), this, SLOT(hide()));

restoreAction = new QAction(tr("&Restore"), this);
connect(restoreAction, SIGNAL(triggered()), this, SLOT(showNormal()));

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

void HSM::createTrayIcon()
{
trayIconMenu = new QMenu(this);
trayIconMenu->addAction(minimizeAction);
trayIconMenu->addAction(restoreAction);
trayIconMenu->addSeparator();
trayIconMenu->addAction(quitAction);

trayIcon = new QSystemTrayIcon(this);
trayIcon->setContextMenu(trayIconMenu);
trayIcon->setToolTip(tr("My app"));
}

void app::createActions()
{
minimizeAction = new QAction(tr("Mi&nimize"), this);
connect(minimizeAction, SIGNAL(triggered()), this, SLOT(hide()));

restoreAction = new QAction(tr("&Restore"), this);
connect(restoreAction, SIGNAL(triggered()), this, SLOT(showNormal()));

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

void app::showMessage()
{
QSystemTrayIcon::MessageIcon icon = QSystemTrayIcon::MessageIcon();
trayIcon->showMessage(tr("My app"), tr("Some msg"), icon, 100);
}

void app::iconActivated(QSystemTrayIcon::ActivationReas on reason)
{
switch (reason)
{
case QSystemTrayIcon::Trigger:
show();
break;
case QSystemTrayIcon::DoubleClick:
show();
break;
case QSystemTrayIcon::MiddleClick:
showMessage();
break;
default:
;
}
}

[been_1990]

Thanks! The tray icon is working really great. And that helped me understand QT a little bit more.:)

And now...
How do I hide its taskbar button?
http://www.qtcentre.org/forum/attachment.php?attachmentid=3245&stc=1&d=1242002809

[been_1990]

Anyone?....

[ComaWhite]

you can try like how I did it.



void
MainWindow::closeEvent(QCloseEvent *event) {
if (Settings::enableSystemTray()) {
if (Settings::minimizeToTrayOnClose()) {
hide();
event->ignore();
}
} else {
QMainWindow::closeEvent(event);
}
}

[been_1990]

Can you explain what that does? And how to call it(send an event)

[auba]

closeEvent is called when the underlaying window system wants to close the main window. On windows by Alt-F4 or the close button.
If enabled in the program's settings, you would provide the main window to be closed at all, but only be minimized to the tray.

[been_1990]

Oh... so it hides the window but doesnt close it... (what was I thinking...) but thats not what I need..
I want my window to be shown, but remove the taskbar button.

[auba]

Maybe something like



void
MainWindow::showEvent(QShowEvent *event) {
trayIcon->hide();
QMainWindow::showEvent(event);
}
}
void
MainWindow::hideEvent(QHideEvent *event) {
trayIcon->show();
QMainWindow::hideEvent(event);
}
}


(Assumed, neither tested nor knowed)

[been_1990]

Ok, will take a look at it

[been_1990]

That's not it. I dont want to hide the trayIcon. I want to hide the taskbar button.

[auba]

As the taskbar content is managed by the explorer.exe, this is something deep inside of your Vista...

I believe there was something that the taskbar entry was not shown when the main window of the app had no frame

setWindowFlags(Qt::FramelessWindowHint);


Another approach is shown on Codeguru (http://www.codeguru.com/cpp/frameworks/advancedui/article.php/c3227/). This example uses the MFC, but also explains what has to be done.

[been_1990]

mine is already set to Qt::FramelessWindowHint, doesnt change it. So I guess the solution is OS dependant.

[auba]

I've never seen any explorer.exe on my system, so... yes :D Indeed, I think it is window manager dependent.

[talk2amulya]

here is how to hide the taskbar button, it was already explained to you in one of the earlier posts:


void mymainwindow::closeEvent(QCloseEvent *event) {
hide();
event->ignore();
}

notice that you'll have to subclass QMainWindow, here mymainwindow is subclass of QMainWindow..if you have any other questions, go through this thread again, your problem has already been solved.

[talk2amulya]

I've never seen any explorer.exe on my system, so... yes :D Indeed, I think it is window manager dependent.

explorer.exe is always running on your windows system..killing that process removes your whole taskbar..check your task manager, you'll find explorer.exe staring at you like deer in headlights.

[auba]

I do not run windows at all as I have to work - not to play. I only use Vista to start my games :) but thats OT

[been_1990]

here is how to hide the taskbar button, it was already explained to you in one of the earlier posts:


void mymainwindow::closeEvent(QCloseEvent *event) {
hide();
event->ignore();
}

notice that you'll have to subclass QMainWindow, here mymainwindow is subclass of QMainWindow..if you have any other questions, go through this thread again, your problem has already been solved.

But doesnt that only hide my window? And if that really is the solution how do I call closeEvent()? I tried several ways but I really didnt get it. I need the taskbar button to be always hidden. I'm really lost here... :confused:

[talk2amulya]

ok, so normally the way it works is when you have your window maximised, you dont have any tray icon..when you close the window, the taskbar button disappears and tray icon appears..then you double click the tray icon or choose maximise from its context menu, and the window appears and taskbar button appears..isnt that how you want it? if you do, close event would be called when you click close icon of window..or you can call it yourself if you want your application to start minimized..remember that when window is shown, taskbar button would always be there, there is no way to avoid that and i dont understand why anyone would even want that..you can use showEvent, hideEvent, closeEvent as mentioned in the posts..closeEvent code that i posted earlier would close your window and remove the taskbar button, right then you have to show the tray icon in tray, add that code..further, you can use the code posted by Fastman to work out the context menu of the tray icon..and you have your job done.

[been_1990]

A image is worth many words.This is what I need:

From this:
http://www.qtcentre.org/forum/attachment.php?attachmentid=3272&stc=1&d=1242583905

Note the taskbar button.

To this:
http://www.qtcentre.org/forum/attachment.php?attachmentid=3273&stc=1&d=1242583905

Note no taskbar button.

[been_1990]

Any replies?

[auba]

...Another approach is shown on Codeguru (http://www.codeguru.com/cpp/frameworks/advancedui/article.php/c3227/). This example uses the MFC, but also explains what has to be done.


..remember that when window is shown, taskbar button would always be there, there is no way to avoid that and i dont understand why anyone would even want that..

What is left to say?

[been_1990]

QSplashScreen removes the taskbar button, but nothing usefull can happen there.

[saimel]

Hi, I wanna know if you could resolve the problem with the taskbar icon because I want to do it now but I have no idea about how to do it