Michel
Thu Jan 08 11:04:30 CST 2004
I've seen a user who tried to open more than 10 copy of the same exe, on the
same machine ! here's what I've done:
for that job, in the Mainform.ini, I store sys(0) to CuserMachine, and
fopen(CuserMachine,12) on the "server" disk (where are all data). then, you
Fwrite() what you need when you want : with a timer, or/and after a user
identification form, or/and after opening tables, etc.. don't forget
fclose()
everytime you need, you verify your flag. one user and one machine=one flag
if that flag is 0 octets, your user has done nothing, and you send him a
messagebox : your app is running, but y're not identified!
if the flag is >0, then you read it as a text file, or with an append in a
dbf, and you know what was doing your user, and what to tell him
I have also 1 dbf to store date and time of logging of each user/machine
(same dbf for all users/machines), a dbf for each user to store machine
login/logoff, a dbf for each machine to store user login/logoff. these are
the last dbf to be updated when the use quit the app, and then i delete the
flag.
on the beginning of mainprg, i verify the flag, and the 3 log_dbf
it runs ...
"Rush Strong" <rush.strong]@[verizon.net> a écrit dans le message de
news:ueqtxgG1DHA.2448@TK2MSFTNGP12.phx.gbl...
> The danger her is that if the applications ends abnormally, the flag never
> gets set to .F., and you can't get back in.
>
> Instead of using a flag, try using a login table with a single record for
> each machine that uses the app. Have the app attempt to do a record lock
> [RLOCK()] on that record upon startup, then release it on shutdown. If a
> second copy is started, the RLOCK() will fail and appropriate messages
could
> be displayed. And if the program crashes on one machine, the operating
> system will (or should) release the lock.
>
> - Rush
>
> "John" <oglethorpesupply@earthlink.net> wrote in message
> news:UypKb.27810$IM3.7984@newsread3.news.atl.earthlink.net...
> > If you are doing the programming, you could have a config.dbf table with
a
> > field called config.isappopen of type logical. When the app runs, check
> if
> > the value is set to .t.. If it is, quit the app. If not, run the app
and
> > when the app closes, set the field to .f.. Just an idea.
> > John.
> >
> >
> > "Frank" <anonymous@discussions.microsoft.com> wrote in message
> > news:02c901c3d3de$5dc248c0$a601280a@phx.gbl...
> > > I have a VFP8 app that is installed on several pc's. The
> > > data is on a server.
> > >
> > > The problem I have is I have 1 user that walks away from
> > > his pc and when he returns he opens the app again from
> > > the windows icon and starts getting record locking errors.
> > >
> > > How can you ck to see if a user already has your app open?
> > >
> > > TIA
> > >
> > > Frank
> >
> >
>
>