Only on copy running

How can I make my application so that only one copy of it at a time can be running?
If someone has a code ready for it, please send it.

Thank you!

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In the startup code:

If App.PrevInstance Then Exit

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In a Module, put the following code (and set your startup objest as Sub Main in Project->Properties->Startup Object):

Sub Main()
    If App.PrevInstance Then
        Exit Sub 'Exit if already running
        Form1.Show 'Else show your main form
    End If
End Sub
Microsoft article explains how to prevent multiple instances and activate the previous instance:
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CaminmanAuthor Commented:
Excellent answer!!
Please propose an answer, so I can give you some points
You already accepted psmith's answer :-(
CaminmanAuthor Commented:
Yeah.... I did that didn't I... :I
Well... Isn't a "Thank you very much!!!"
Worth more than some points? :)
Yes it is. You're welcome very much.
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Visual Basic Classic

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