rem: KNHdrViewItem::clearFontCache();
context: void KNMainWindow::configChanged(){  KNConfig::Appearance *app=c_fgManager->appearance();  c_olView->setFont(app->groupListFont());  KNHdrViewItem::clearFontCache();  h_drView->setFont(app->articleListFont());  QPalette p = palette();  p.setColor(QColorGroup::Base, app->backgroundColor());  p.setColor(QColorGroup::Text, app->textColor());  c_olView->setPalette(p);  h_drView->setPalette(p);  if (knGlobals.cfgManager->readNewsGeneral()->showScore()) {    if (!h_drView->header()->isResizeEnabled(2)) {      h_drView->header()->setResizeEnabled(true,2);      h_drView->header()->setLabel(2,i18n("Score"),42);    }  } else {    h_drView->header()->setLabel(2,QString::null,0);    h_drView->header()->setResizeEnabled(false,2);  }  if (knGlobals.cfgManager->readNewsGeneral()->showLines()) {    if (!h_drView->header()->isResizeEnabled(3)) {      h_drView->header()->setResizeEnabled(true,3);      h_drView->header()->setLabel(3,i18n("Lines"),42);    }  } else {    h_drView->header()->setLabel(3,QString::null,0);    h_drView->header()->setResizeEnabled(false,3);  }  a_rtManager->updateListViewItems();}