Progress.Windows.IForm interface (Windows only; GUI for .NET only) Provides for interoperability between ABL GUI windows and .NET forms. All OpenEdge .NET form-based classes in ABL implement this interface. PublicProperties NextForm property PrevForm property ProWinHandle property PublicMethods This interface does not contain method prototypes. Notes There is no need for user-defined classes to implement this interface. For information on the use of this interface when working with the form chain in an OpenEdge session, see OpenEdge Development: GUI for .NET Programming. See also Progress.Windows.Form class, Progress.Windows.FormProxy class