>>>VFP9 is written in C++
>>>
>>>Can't see that compatibility being dropped any time soon
>>
>>Sure, one could recompile VFP to bring it into 64-bit (albeit with quite a few adjustments to get rid certain assumptions that might've been made because it was built for 32-bit) -- that is, if you had the source code (and considering that that there is likely enough proprietary information contained within it that it would be unlikely that Microsoft would release the source code)... Or you could implement your own p-code engine to replace the runtime (and the "compiler" portion if you want to continue development)...
>
>I remember Ken Levy was said that like "making VFP 64 bit isn't an easy task..."

But it was already done at least twice (eTecnologia and Christof), even though these projects weren't exactly finished - but, hey, these were small outfits or a single person. Microsoft could have done the same - they could just save as much money on lawyers or advertising in a day and invest some manpower into development instead. They just didn't want to do it.