SetFormFieldVisibilityAction

Form fields, Destinations and actions

Description

Assigns a show, hide, or toggle visibility action to an AcroForm field event by using readable event and field-name lists

Function TPDFlib.SetFormFieldVisibilityAction(Index: Integer; Const EventName, FieldNames: WideString; Visibility: Integer): Integer;

Index	The form field ID that receives the action
EventName	A readable event name such as MouseUp, Enter, Exit, Focus, LostFocus, KeyPress, Format, Change, Calculate, or their short PDF trigger names
FieldNames	A semicolon, comma, or line separated list of target field names
Visibility	0 hides fields, 1 shows fields, 2 toggles fields through JavaScript

0	The action could not be assigned
1	The action was assigned