SMART datagrid v.1 > Classes > TreeDataSet
It returns the descendant row of TreeDataRow which has been specified by parameter parent as array until below parameter level stage from the level of parent.
parent can specify TreeDataRow object or rowId. If specify level as less than 0, it will return all descendant rows.
// Get descendant rows of two levels below.
var rows = ds.getDescendants(row, 2);