>>>>#DEFINE's are string translations that take place at compile-time not run-time. That is, when PRG's etc. are converted into FXP's or EXE's etc.
>>>
>>>Houston,
>>>
>>>This isn't correct if the #DEFINE contains a function such as your INLIST() example. These are evaluated at run-time.
>>
>>George,
>>I just entered the following code into VFP6 SP3 running on NT4 SP6.

#DEFINE Sunday 1
>>#DEFINE Saturday 7
>>#DEFINE AWeekend   INLIST( iDayOfWeek, Saturday, Sunday )
>>
>>CLEAR
>>dCurrent = DATE()
>>iDayOfWeek = DOW( dCurrent )
>>IF (AWeekend) THEN
>>   ? "Yes it's a weekend."
>>ELSE
>>   ? "Not a weekend"
>>ENDIF

In my Edit, Preferences, I have 'Compile when saved' checked. After compiling the prg and running it for today (Monday), I get "Not a weekend", and then I changed the date to Sunday using my system clock and immediately ran the prg again (without any modifications and/or recompiling) - as expected the message changed to "Yes it's a weekend."
>>
>>If the INLIST() is 'evaluated' at compile-time, why does the message change?
>
>Houston,
>
>This is what you said,
>
>"#DEFINE's are string translations that take place at compile-time not run-time. That is, when PRG's etc. are converted into FXP's or EXE's etc."
>
>What I am saying is that if the #DEFINE contains a function call such as INLIST() this statement is not correct. These are dynamic and evaluate differently at run-time.

Hi George,
I'd appreciate (and I'm sure a whole bunch of lurkers would also appreciate) a piece of code that demonstrates the 'evaluate differently at run-time'.