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ABL Reference
Handle Attributes and Methods Reference : FIRST-FORM attribute
 

FIRST-FORM attribute

(Windows only; GUI for .NET only)
The object reference for the first .NET Progress.Windows.IForm or ABL window FormProxy (Progress.Windows.FormProxy) object in the list of all valid OpenEdge form objects created in the current ABL session.
Data type: Progress.Windows.IForm interface
Access: Read-only
Applies to: SESSION system handle
Once you get the first object reference in the list, you can use the NextForm property in the Progress.Windows.IForm interface to get the next entry in the list of OpenEdge form object references.
Note: To obtain the first class-based object in the list of all valid ABL and .NET objects created in the current ABL session, use the FIRST-OBJECT attribute.
If you instantiate a Progress.Windows.IForm in a non-GUI ABL session, the object does not appear in the list of OpenEdge form objects, but only in the list of valid class-based objects.

See also

LAST-FORM attribute, LAST-OBJECT attribute, FIRST-OBJECT attribute, NextForm property, Progress.Windows.FormProxy class, Progress.Windows.IForm interface