Minimize to Tray

[QT8seven]

I have searched all around and cannot get this to work! Attempting to call hide() within changeEvent in a way such as:

void AppWindow::changeEvent(QEvent *event)
{
    if (event->type() == QEvent::WindowStateChange)
        if(isMinimized())
        {
            hide();
        }
    QMainWindow::changeEvent(event);
}

void AppWindow::changeEvent(QEvent *event)
{
    if (event->type() == QEvent::WindowStateChange)
        if(isMinimized())
        {
            hide();
        }
    QMainWindow::changeEvent(event);
}

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causes the window to white-out rather than hide. Does anyone know why this happens or how to fix this? I am attempting to use a tray-icon on minimize, but without being able to hide will never have much success. Currently, the only way I can work around this is to use a singleShot timer to call the hide.

[Oleg]

Try this way (at least it works fine in our projects):

if (event->type() == QEvent::WindowStateChange && windowState() & Qt::WindowMinimized)
    QMetaObject::invokeMethod(this, "hide", Qt::QueuedConnection);

if (event->type() == QEvent::WindowStateChange && windowState() & Qt::WindowMinimized)
    QMetaObject::invokeMethod(this, "hide", Qt::QueuedConnection);

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[QT8seven]

That's very neat, works great. Next problem:

When I restore the application it loses it's window-size. It remembers it's location, but forgets the size. Is there a proper way to restore, or am I going to have to save the settings and restore them manually when brought back from the tray. I am using:

showNormal();

I have tried simply using 'show' and 'activateWindow' but this has the same flaw and in addition it fails to bring the window to the front.

---

Added after 42 minutes:

Currently I have fixed the problem using saveGeometry and restoreGeometry. However, if this is a needless work-around I'd like to drop it. Any ideas are welcome.

[Oleg]

Maybe this will help:

void MainWindow::restoreWindow()
{
    setVisible(true);
    if(isMinimized())
        setWindowState(windowState() & ~Qt::WindowMinimized);
 
#ifdef Q_OS_WIN32
    ::SetForegroundWindow(effectiveWinId());
    ::SetWindowPos(effectiveWinId(), HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
#else
    activateWindow();
#endif
}

void MainWindow::restoreWindow()
{
    setVisible(true);
    if(isMinimized())
        setWindowState(windowState() & ~Qt::WindowMinimized);

#ifdef Q_OS_WIN32
    ::SetForegroundWindow(effectiveWinId());
    ::SetWindowPos(effectiveWinId(), HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
#else
    activateWindow();
#endif
}

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