Hide QMainWindow without removing taskbar icon?

[bigchiller]

Hey Guys,

I am wondering if it is possible to hide a QMainWindow object but keep its taskbar icon?

I am implementing a new view with minimal screen footprint. When the user enters this new view I would like to hide the main client and render a new child Widget to represent a toolbar for the user. As soon as I hide my QMainWindow, the taskbar icon is removed, even if I have child widget visible.

Is there any way around this?

[ComaWhite]

Here is what I have to do it for me

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

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

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Just replace KXmlGuiWindow with QMainWindow since KXmlGuiWindow is KDE code

[bigchiller]

Here is what I have to do it for me

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

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

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Just replace KXmlGuiWindow with QMainWindow since KXmlGuiWindow is KDE code

I just tried this and it doesn't work. Maybe you misunderstood what I am trying to do. I don't think I was clear enough

here is some code:

int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
 
        // create and show main window
	TestWindow* mainWindow = new TestWindow(); 
	mainWindow->show();
 
        // create and show child window
	QMainWindow* childWindow = new QMainWindow(mainWindow);
	childWindow->show();
 
        /// now we have 2 windows on screen and 1 icon on taskbar 
 
       // hide main window.
	mainWindow->hide() ;
 
       // now I have childWindow on screen but no icons on taskbar.
      // I would like to the taskbar icon to remain and its functions (maximize, minimize, close, etc) to control the child window. 
 
	return a.exec();
}

int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
	
        // create and show main window
	TestWindow* mainWindow = new TestWindow(); 
	mainWindow->show();

        // create and show child window
	QMainWindow* childWindow = new QMainWindow(mainWindow);
	childWindow->show();

        /// now we have 2 windows on screen and 1 icon on taskbar 

       // hide main window.
	mainWindow->hide() ;

       // now I have childWindow on screen but no icons on taskbar.
      // I would like to the taskbar icon to remain and its functions (maximize, minimize, close, etc) to control the child window. 

	return a.exec();
}

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In my TestWindow class i overrode the closeEvent as you had it and It didn't work for me. In fact, the closeEvent isnt fired after a hide()

[aamer4yu]

You could try calling mainWindow->showMinimized();

If that doesnt work, you can try this -
Set the opacity of the main window to 0. The window would be there, not visible. But how you choose to make it opaque again might be tricky

[bigchiller]

You could try calling mainWindow->showMinimized();

If that doesnt work, you can try this -
Set the opacity of the main window to 0. The window would be there, not visible. But how you choose to make it opaque again might be tricky

If i use showMinimized() and then click the taskbar icon for the window, it will still show options such as maximize which will maximize both the child and parent windows.

The only way I'm aware of overriding the maximize window operation is to use windows specific or x11 specific code. Does anyone know of a better way to override the maximize operation so that if the user attempts to maximize from the taskbar they won't be able to?

[wysota]

What's the point of having a taskbar entry if you can't do anything with it? Maybe you should just show the taskbar entry for the child you show instead of the main window?