TreeTableField
TreeTableField* field = dynamic_cast<TreeTableField*>(_field);
TreeTableField* field1 = dynamic_cast<TreeTableField*>(_field1);
TreeTableField* field2 = dynamic_cast<TreeTableField*>(_field2);
TreeTableField* field = dynamic_cast<TreeTableField*>(_field);
TreeTableField* field = new(std::nothrow) TreeTableField(modelObject);
TreeTableField* field = dynamic_cast<TreeTableField*>(fRow->GetField(0));