Qt 5 to-do's in QApplication

// ######## move to QApplicationPrivate
// Default application palettes and fonts (per widget type)
Q_GLOBAL_STATIC(PaletteHash, app_palettes)
PaletteHash *qt_app_palettes_hash()
{
    return app_palettes();
}

Q_GLOBAL_STATIC(FontHash, app_fonts)
FontHash *qt_app_fonts_hash()
{
    return app_fonts();
}
...
                // ### Qt 5 These dynamic tool tips should be an OPT-IN feature. Some platforms
                // like Mac OS X (probably others too), can optimize their views by not
                // dispatching mouse move events. We have attributes to control hover,
                // and mouse tracking, but as long as we are deciding to implement this
                // feature without choice of opting-in or out, you ALWAYS have to have
                // tracking enabled. Therefore, the other properties give a false sense of
                // performance enhancement.
                if (e->type() == QEvent::MouseMove && mouse->buttons() == 0) {
                    d->toolTipWidget = w;
                    d->toolTipPos = relpos;
                    d->toolTipGlobalPos = mouse->globalPos();
                    d->toolTipWakeUp.start(d->toolTipFallAsleep.isActive()?20:700, this);
                }