Prevent multiple instances of an Exe 1

[djsiders]

How can you prevent a VB exe file from being launched more than once at any given time. For example, I double click test.exe to launch the program. Until I quit the test.exe program I do not want to allow the program to be started again. Once I exit, re-starting one instance is fine (actually necessary). I really need this to happen as soon as the program is started, possibly before the first form even appears.

Any help is appreciated.

 

[CajunCenturion]

You might try using the App.PrevInstance property.

If App.PrevInstance = True Then
Unload Me
End If Good Luck
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As a circle of light increases so does the circumference of darkness around it. - Albert Einstein

 

[djsiders]

Worked great! Guess I better look into the App object a little more & see what else I've been missing. Since I am starting my program from sub Main in a module, I revised the Unload to an End, but that was it. Here's how I tested it:

If App.PrevInstance = True Then
MsgBox "It worked", vbOKOnly, "Tek-Tips Rocks"
End
End If


Another star for CC