QString CFormulaNode::getMathMLNodeDescription_IterateParent() { QString res = _T(""); CFormulaNode *frmParent = this; CNode *pParentNode = 0; while( (pParentNode = frmParent->GetParent()) != 0 ) { frmParent = pParentNode->getParentContentFormulaNode( 0 ); if( !frmParent ) break; res = frmParent->getMathMLNodeDescription(); if( res.length() ) return res; } return res; }