<snip>
>Hi Ed, Of course, for C or Assembler, these type of error always occur.
>But as these part of code cannot be handled by programmer. The 4GL progr try all
>possible case to trace what these error may occur?! much seriously!
>
>Besides, I wonder no need other function call! That is, it will cause error
>even:
>
>= NVL(.NULL., _screen)
>
I ran this code, as well as:
FOR i = 1 to 100
=NVL(.NULL.,_SCREEN)
ENDFOR
with no problems under VFP 5.0a, with no porblem to report.
>
>Maybe it is a weapon for fired progr to make a deadTime of program.
>If Date() >= {2000/1/1}
> = NVL(.NULL., _screen)
>Endif
>
>and hide it in any superclass Init procedure!
Why?