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From: BeeJ <nospam@spamnot.com>
Newsgroups: microsoft.public.vb.general.discussion,comp.lang.basic.visual.misc
Subject: Re: Handling second instance works in IDE but not when compiled
Date: Wed, 17 Oct 2012 12:24:52 -0700
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On Sat, 13 Oct 2012 18:30:34 -0700, -mhd <not_real@invalid.com> wrote:

> Normally when I detect a running instance of my prog by using a mutex  
> value, I
> just kill the second instance but now I also want to bring the first  
> instance up
> to normal state if its minimized.
>
>
>    MutexValue = CreateMutex(ByVal 0&, 1, "MyProgMutex")
>    If (Err.LastDllError = ERROR_ALREADY_EXISTS) Then
>       CloseHandle MutexValue
>       'Search for Window / Get its Handle
>       lhwnd = FindWindow(vbNullString, "My Prog Caption")
>       'If Another Window Found
>       If lhwnd <> 0 Then
>          'Activate and Show Window
>          lRtrn = ShowWindow(lhwnd, SW_SHOWRESTORE)
>       End If
>       'this instance exits sub main and dies
>       Exit Sub
>    End If
>
> Works just great in the IDE as the first instance pops up from minimized  
> state
> and the second one dies.
>
> When compiled the second one dies immediately upon launching as intended  
> but the
> first one doesn't pop up.
>
> Any ideas?
>
> -mike


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