rem: QComboBox *cb = new QComboBox( TRUE, parent ); cb->setInsertionPolicy( QComboBox::AtBottom ); setParamWidgetValue( cb ); return cb;
add: IdentityCombo * ic = new IdentityCombo( parent ); ic->setCurrentIdentity( mParameter ); return ic;
context: QWidget* KMFilterActionRemoveHeader::createParamWidget( QWidget* parent ) const{  QComboBox *cb = new QComboBox( TRUE/*editable*/, parent );  cb->setInsertionPolicy( QComboBox::AtBottom );  setParamWidgetValue( cb );  return cb;}