I am creating a descendant of TCustomTableWidget, where I would like to define columns as visible and invisible .... more the TTableWidgetCellData does not allow changes even if I inherit it. <http://pas2js.38893.n8.nabble.com/file/t17/Screenshot_20201124_102647.png> -- Sent from: http://pas2js.38893.n8.nabble.com/