XmHierarchy — The Hierarchy widget class "XmHierarchy" "Hierarchy" "hierarchy"

       The  Hierarchy  widget  is  not intended to be instantiated itself, but rather should be used as the base
       class for any widget that would like to present a hierarchy of information to the user that is  different
       for  the  actual widget instance hierarchy of the application.  This base class is currently used for two
       widgets in the Motif widget set, Tree and Outline, giving those two widgets a very similar API.

       Note: The Hierarchy widget assumes that it will be totally responsible  for  mapping  and  unmapping  its
       children. Therefore no child of this widget should ever modify its mappedWhenManaged resource. If a child
       does modify this resource the behavior is undefined.

   Classes
       Hierarchy  inherits  behaviour,  resources,  and  traits from Core, Composite, Composite, Constraint, and
       XmManager classes.

       The class pointer is xmHierarchyWidgetClass.

       The class name is XmHierarchy.

   NewResources
       ┌──────────────────────────────────────────────────────────────────────────────────────────────┐
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XmHierarchy — The Hierarchy widget class "XmHierarchy" "Hierarchy" "hierarchy"

Composite(3),      Constraint(3),     Core(3),     XmCreateHierarchy(3),     XmHierarchyGetChildNodes(3),
       XmHierarchyOpenAllAncestors(3), XmManager(3).

                                                                                                  XmHierarchy(3)

       #include <Xm/Hierarchy.h>