Re: already running


"Dave O." <nobody@xxxxxxxxxxx> wrote in message
news:%23%23hDKniuHHA.5072@xxxxxxxxxxxxxxxxxxxxxxx
It depends how critical it is to have a single instance and how devious
your
users are.
App.PrevInstance can be fooled by making a copy of the executable and
renaming it.
If you need to avoid that possibility research on MUTEX, however if it is
not a potential problem then App.PrevInstance will be adequate.

Regards
Dave O.


To add another petty distinction. App.PrevInstance also depends on an app
being fully initialized. So if you have an App that takes a bit of time on
start-up it is possible for a user with rapid clicks to launch several
instances.

IHMO, adding Mutex functionality is simple and avoids all short falls, so
why not use it? Set it and forget it. <g>

Here is one way...
http://www.vbaccelerator.com/home/VB/Code/Libraries/Shell_Projects/Registering_File_Associations/article.asp
Here is another...
http://vbusers.com/code/codeget.asp?ThreadID=275&PostID=1&NumReplies=0

-ralph



.

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