The IsAncestorOf method returns TRUE if the composite is an ancestor, at any level, of a specified form field.

This method has the following syntax:

This method has the following parameter:

This method determines if a specific field is part of a particular composite field. This method is most useful in generalized ChildExit events to see if the field being exited is part of a given composite field. For example, in a ChildExit event block for SubForm, sf, you can use the following expressions to determine if the user is leaving the subform:

This code returns FALSE if it is not part of the composite.

IsDescendantOf (see IsDescendantOf Method), a related method defined for the FieldObject class, determines if a field is a descendant of a specified field.