How to uniquely identify a process?

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01423481d@gmail.com - 22 Nov 2006 06:23 GMT

Hi all

The question is simple:
How can I find out if an executable is running apart from verifying
process name, path, program title etc which does not ensure uniqueness?
I think classid (GUID) could help but I dont know if it is the right
direction and how to achieve this. Any advise is welcomed!

Thanks

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01423481d@gmail.com - 22 Nov 2006 07:31 GMT

01423481d@gmail.com 寫道：

> Hi all
>
[quoted text clipped - 5 lines]
>
> Thanks

OK I got it

Process.getType.GUID.toString()

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Tom Shelton - 22 Nov 2006 08:09 GMT

> Hi all
>
[quoted text clipped - 5 lines]
>
> Thanks

This is generally done with a mutex.

public sub main
dim created as bool
dim instanceCheck as new mutex (true, "MY_UNIQUE_MUTEX_NAME",
created)

if created then ' we got the mutex
try
application.run (new form1())
finally
instanceCheck.ReleaseMutex () ' make sure we release this bad
boy
end try
else
' process already running
' i've been known to use WM_COPYDATA to send messages to prev
instances :)
end if

end sub

HTH,
Tom Shelton

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