>>The new DO CASE based on your reply
>>Thanks all :-)
>>
>>

>>DO CASE
>>   CASE nDots > 1  && object property
>>     lIsField=.F.
>>   CASE nDots = 1  && property or field
>>     lIsField= USED(JUSTSTEM(.controlsource)) AND FSIZE(JUSTEXT(.controlsource))>0 && returns .t. if field
>>   OTHERWISE  && nDots=0
>>     lIsField= FSIZE(.controlsource)> 0
>>ENDCASE	
>>
>>

>
>Gerald,
>Parsing was prohibited :)?
>Some comments which might never apply :
>-Multiple dots where conrolsource is multiple fields.
>-Dots=0 and isField and alias not the current one
>-Dots=1 this sounds better :
>lIsField= FSIZE(JUSTEXT(.controlsource), JUSTSTEM(.controlsource))>0
>-Dots = 1 but memvar, same name field in current alias && 'm.First_Name'
>-Dots = 0 but old syntax && 'myTable->First_Name'
>
>Cetin

That was a lot of testing for a simple checkbox...
I want a good reaction time and if i do all that testing i will lose a lot of CPU cycles...

I think i will forget about all that stuff and use a normal checkbox
out of sight in the container and let it hold the controlsource.

:-)