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Details

Type: Bug
Resolution: Fixed
Priority: P3: Somewhat important
Fix Version/s: 6.6.2, 6.7.0 Beta2, 6.8.0 FF
Affects Version/s: 5.15.2, 6.3.0
Component/s: GUI: Painting
Labels:
None

Platform/s:

Windows
Commits:
94809cdec (dev), 7c22796a9 (6.7), 00c1ceb36 (6.6)

Description

If a Windows (Toast) Notifiaction is send with the showMessage function of QSystemTrayIcon the given Icon is in the wrong resolution. The icon itself is scaled into a smaller resolution and upscaled by Windows to the desired size. As you can see in the image attached the icon is completly pixelated.

The error should reside in qwindowssystemtrayicon.cpp at line 283:

QPixmap pm = icon.pixmap(size);    
if (pm.isNull()) {        
    tnd.dwInfoFlags = NIIF_INFO;    
} else {        
    if (pm.size() != size) {            
        qWarning("QSystemTrayIcon::showMessage: Wrong icon size (%dx%d), please add      standard one: %dx%d",                      
        pm.size().width(), pm.size().height(), size.width(), size.height());            
        pm = pm.scaled(size, Qt::IgnoreAspectRatio);        
    }        
    tnd.hBalloonIcon = qt_pixmapToWinHICON(pm);    
}

On Windows 8.1 or newer the check if it's a large or small icon should be deprecated.