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DarkBASIC Professional Discussion / APP Instance?

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The Wendigo
21
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Joined: 13th Sep 2002
Location: A hole near the base of a tree in the US
Posted: 8th Oct 2002 07:15
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Is there anyway to see if there is already an instance of your program running? I'm thinking of writing some screensavers in the future, but windows has a tendency to keep loading the screensaver nonstop. It would be nice if i could make it where only 1 could run at a time.
1.00 GHZ processor, 256 MB RAM, GeForce 3 64MB, SB Live!, 8 cans of soda per day
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The One Ring
21
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Joined: 15th Sep 2002
Location: United States
Posted: 23rd Oct 2002 17:16
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Yes, but you can't do it in DBP... In C++, try using CreateMutex, or maybe even FindWindow to determine if the application is already running. Go to http://msdn.microsoft.com and search for either of those commands for more information.

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The Darthster
21
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Joined: 25th Sep 2002
Location: United Kingdom
Posted: 24th Oct 2002 01:36
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You can do it in DBPro by checking the registry:

get registry("<program name and path>", "Running")

will return a value depending on whether your program is running or not.
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The One Ring
21
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Joined: 15th Sep 2002
Location: United States
Posted: 24th Oct 2002 05:49
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Yeah, I guess you could. Check for a specific flag in the registry when your app runs. If its not set, set it. Next app instances will see this flag and have it halt... good call Darthster

AMD Athlon 900 768MB DDR
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Lazzarus
21
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Joined: 19th Sep 2002
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Posted: 24th Oct 2002 12:46
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How about 'app path'? Is that posibble? It would save adding thing to the DBP project.

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