I have a large program and i need to perform a SHELL comand to invoke a
batchfile. This works fine in a compiled programme but I get a "out of
memory" error when i run inside the QB environment.

Does anybody have a workaround idea ?

Thanks in advance

/Jonas Rosberg

If it is absolutely necessary for you to run this batch file in
the IDE, the only way is to make more lower memory in DOS. That means
unloading TSR's if any, moving DOS and every driver possible to upper memory
etc. Check the results of MEM (if you have DOS 5.0 or better) to see how much
memory you have available, and MEM /C to see whats in there. (Try running MEM
from a plain SHELL in the IDE and see how much memory you have, you may not
ever be able to get enough).

Cheers! Ian

   program_a.exe                        program_b.exe
   -----------------------------------------------------------
     cls                                shell"blah blah blah"
    chain program_b.exe         chain program_a.exe
    chain program_b.exe         end
    end

Good luck

For example say you have two apps.. app1 and app2 - Both quite large.
Then if in app1 you try and chain app2 it will run out of memory.

BUT if you create a third app (App3) that contains only one line
thus "CHAIN app2" then you can chain from app1 to app2 via app3 and
you will not run out of memory.

Of course the same applies on the way back. App4 will only have one
line "CHAIN app1" and it will be chained from app2.

Now say you want to shell from app1 then create another app (App5)
which will say

Shell "Whatever"
CHAIN "app1"

To shell to 'Whatever' from app1 then CHAIN "app5" it will run the
shell and then return you to app1.

As I said earlier App1 will start from the beginning but with clever
use of flags you can make it continue were you left off.

As to the size of the app you can shell.  There is really no answer.

What is the size of the command.com ? They vary with dos versions.
How much spare mem do you have ?
Are you using Expanded mem.
etc etc

I am sure that you will be able to chain from any app to any other
app if you understand the above.

It looks complicated when it is written down BUT in practise it is
very easy

In my last major Programme I had about 20 intermediate apps so I could
easily chain from one to the other.

You must however compile them at least once for them to work within
the IDE.

Phil

CHEERIO!