FlexTreeHeader Class
The FlexTreeHeader class is a class that defines how to display the row headers of FlexView. The corresponding header cells are displayed as a key break of the cell value or grouped by the specified number of rows, similar to FlexGroupHeader.
FlexTreeHeader can display groups in a tree format and collapse or unfold the groups by operating the screen.
Place the FlexTreeHeader object under the FlexRecord or FlexColumnSet object.
Screen Display Example
Layout Constraint
FlexTreeHeader objects cannot be placed to the right (after in definition order) of objects of classes derived from FlexHeader, FlexGroupHeader, and non-FlexHeader.
When positioned as a child of FlexColumnSet, it cannot live with objects of classes derived from anything other than FlexTreeHeader.
Default properties and ValueType
The default property is Value. ValueType can be String Number, Fixed, Date and UString.
Value Type can be specified since Ver.4.2.0