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Dark GDK / How to avoid running program twice?

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Alex_Peres
AGK Master
15
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Joined: 13th May 2009
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Posted: 27th Oct 2010 22:11
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Help! How to avoid running program twice?
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Michael P
18
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Location: London (UK)
Posted: 27th Oct 2010 22:17
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Be careful not to double click it twice, I know its hard sometimes, but you've just got to learn.

DarkNet - multiplayer plugin
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Alex_Peres
AGK Master
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Posted: 27th Oct 2010 22:21
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Funny... But this really needs!
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Bran flakes91093
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Posted: 28th Oct 2010 04:15
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Do you mean only allowing one instance of your program to run at a single point in time?

“C++ : Where friends have access to your private members.”
-Gavin Russell Baker
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Hassan
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Location: <script> alert(1); </script>
Posted: 28th Oct 2010 14:52
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if so, i'm not sure if you can ask windows for a list of running applications, but easiet thing i can think of is creating a dummy file somewhere at startup and deleting it at ending, and when the application run while this file is there, it terminates

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Nothing's impossible, it's just a matter of time...
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IanM
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Posted: 28th Oct 2010 15:25 Edited at: 28th Oct 2010 15:25
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You can create a mutex that is unique to your program. Just create one with the initial owner flag set, then check the return value to make sure you have a handle, and then check GetLastError to ensure that you dodn't get ERROR_ALREADY_EXISTS.



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Michael P
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Posted: 28th Oct 2010 15:28
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Now that is neat!

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Alex_Peres
AGK Master
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Posted: 10th Nov 2010 23:04 Edited at: 10th Nov 2010 23:04
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Thanks a lot! It works! But can I get a focus to my previous copy(exemplar)??? Need it much!
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_Pauli_
AGK Developer
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Location: Germany
Posted: 11th Nov 2010 00:16
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Quote: "You can create a mutex"


What is a mutex? Never heard of it.
Anyway, good to know that this works. Could be handy sometimes...

Now the plot thickens, the fps decreases, and the awesomeness goes through the roof.
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