KWindowInfo info = KWindowSystem::windowInfo(mainWidget()->winId(), NET::WMDesktop | NET::WMFrameExtents);
_onAllDesktops = info.onAllDesktops();
#endif
KWindowInfo info = KWindowSystem::windowInfo(mainWidget()->winId(), NET::WMDesktop | NET::WMFrameExtents);
_onAllDesktops = info.onAllDesktops();
#endif