SMART datagrid v.1 > Classes > GridColumn
Return true if this column is fixed column.
When DisplayOptions.fixedColumnCount is greater than 0, the top column including this column, that is, the column of which displayIndex of root column is less than fixedColumnCount will be fixed, and this property value of column will become true.
var column = grid.focusedColumn();
if (column.fixed()) {
alert("This column is fixed.");
}