Thanks w00dy,
As usual an excellent answer to many questions that lots of VFPers will have
Dave
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-----Original Message-----
From: ProFox [mailto:[email protected]] On Behalf Of Jürgen Wondzinski
Sent: 31 October 2017 12:29
To: 'ProFox Email List' <[email protected]>
Subject: AW: VFP10 Advanced was FoxPro DevCon in Frankfurt
Basically, the moniker "VFPA" is three things:
a) the regular 32Bit VFP9 enginge, patched with 30+ bugfixes
b) same as a), but with a 64bit engine
c) a true 64bit compiler, which doesn't need the runtime etc
BTW, the "A" in VFPA is the next HEX sign after 9, or a 10 in Dec. But it also
fits with the "Advanced" tag :)
VFPA is already around since several years, and Mr.Chen seems to be very
knowledgable with Assembler and debugging C++ machinecode :)
Personally I use the regular 32bit version without any problems at my customers
site. It behaves just as a usual VFP9 without some quirks. I was bitten by
those report-engine bugs as well as the Grid-Optimize problem, and with VFPA
this stuff just works. You just do a "recompile all" on your project, put your
EXE and that single VFPAR.DLL to your customer and that's all. One caveat:
VFPA hast he language-Resource-DLL included, thus you need different VFPAR.dll
for different langauges. (Personally I don't like that approach, since you
can't run in a multi-language scenario anymore, where VFP picks the language
DLL according to the user settings)
Also I'm not really convinced about the need for the 64bit version. At least
not for existing desktop applications. As soon as you have some FLLs or OCXs
included, you're basically toasted, since you need those as a 64bit version.
Since most of the VFP specific addons are already 15 years old, the chances to
get those vendors to compile their old stuff into a 64bit version are somewhat
desillusional.
Then: what do you gain from a 64bit version? You don't get over the 2Gb limit
for DBFs, it's just that it can address more RAM. Ok, when did you ran out of
RAM with a VFP version, where the engine was built to work even on
PCs with as little as 64MB RAM? You also have a marketing plus, because
you're now a native 64bit app. And it may run a little bit faster because of
the unneeded 32Bit layer in Windows. As long as you don't need any of your old
addons....
But it does have a valid usecase for Middle-tier applications, like
ActiveFoxProPages or AFPX or FIC, where the VFP engine connects directly to
64bit WebServers.
BTW: @ChristofWollenhaupt: did you already compiled the AFP engine with VFPA?
The third option, a true compiler, is stil work in progress. It does work, but
stil has the same restrictions as option b). Mr.Chen is working to enhance the
limitations at various parts like max. Stringlength, max DBF size etc, but
there are a lot of complications.
woOdy
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