How to limit autoit executable file to only one instance running?

[hstraf]

I am trying to figure out how to limit the user to running only *one* instance of the autoit program I created.

The problem is that they might have renamed the program to somethingelse.exe, so I can't just check the running processes.

The program "lives" in the system tray, and I can't seem to find any associated window...

Is there a way to easily do this? Maybe I can specifically "name" the program window, and then look for this window when starting the next instance.. then exit if it exists?

Thanks!

[bwochinski]

Check the help file for the _Singleton() function. It's designed for exactly this.

[hstraf]

Ah... I figured it out by using the "_Singleton()" function:

; Test to make sure there is not already an instance running.
if _Singleton($ProgramName, 1) = 0 Then
    Msgbox(64, $ProgramName, "The program is already running.")
    Exit
EndIf

Cheers!

[hstraf]

Thanks bwochinski, it looks like we were posting at the same time.

What I really need is a help file that will read my mind!