Changing field position at runtime

Question

I am running forms 6.0.8.14.1
I have a field with a when-mouse-double-click trigger. When the user
double-clicks the field I want the cursor to move to a field in a different
block and display it over the current field hiding it. This works fine client
server. On the web it appears that the field is coming up behind the field I
want to hide. Is this a bug or am I missing something??
This is the code:
DECLARE hold_item varchar2(30) := :system.cursor_item;
l_value varchar2(1);
y number;
x number;
w number;
h number;
BEGIN
:dummy.hold_item := hold_item;
l_value := 'T';
x := to_number(get_item_property(:system.mouse_item,x_pos));
y := get_item_property(:system.mouse_item,height);
y := y * (to_number(:system.mouse_record_offset) - 1);
y := y + to_number(get_item_property(:system.mouse_item,y_pos));
w := get_item_property(hold_item,width);
h := get_item_property(hold_item,height);
set_item_property('dummy.display_stc_type2',position,x,y);
set_item_property('dummy.display_stc_type2',navigable,property_true);
set_item_property('dummy.display_stc_type2',width,w);
set_item_property('dummy.display_stc_type2',height,h);
:dummy.display_stc_type2 := l_value;
go_item('dummy.display_stc_type2');
synchronize;
END;

Answer 1

But in general, we don't support overlapping items - the behaviour is undefined and you don't know which will be displayed on top.
So if you want to pop one field ontop of another - you must explicitly hide the field that you want to overlay