How to modify state of button from trigger in Oracle Forms

Question

I have to modify state of button (hide it) in Oracle Forms (10g -- I am new to Forms and I not sure how to recognize the version).

Unfortunately I cannot modify the form itself.

I can add my own code only to procedures called by PRE-FORM, POST-FORM and WHEN-NEW-ITEM-INSTANCE (something like that) triggers.

However: 1. PRE-FORM is called too early (form modifies button after this trigger). 1. POST-FORM is called when child form is closed (it's OK, but doesn't handle all cases).

WHEN-NEW-ITEM-INSTANCE seems good but I failed trying access button from procedure called from trigger.

I tried to use name_in('datablock.element') to access form elements but I have no idea how to modify the state of element outside the form.

Answer 1

Little bit hard to say when I don't know where your custom code is located. Usually you are hiding items by setting the Visible property to False using forms builtin Set_Item_Property. This should work both from the forms itself and any attached pll library. The syntax is:

Set_Item_Property(<block_name.item_name>, VISIBLE, PROPERTY_FALSE);