OK. I see your point. What about comparing objects?
In VFP6
IF _SCREEN = AnObject
In earlier versions, you must switch a property, like tag, and see if it's switched in the other object
OldTag = _SCREEN.Tag
_SCREEN.Tag = SYS(3)
IF AnOjbect.Tag = _SCREEN.Tag



>>>How to chk whether _Screen Or Form ?? All properties are same... How i can chk that passed object is screen or form ??
>>>
>>>TIA...
>>The _SCREEN.Name = "Screen"
>
>Pls note that this will normally work, but the problem is it can be changed by user..
>
>Is there any other way ??