Check If Apllication Already Runs

herold · **Joined:** Thu Mar 23, 2006 12:07 am **Posts:** 263

How can I check if my application already runs, to avoid the user start it a second time?

Aaron Ballman · **Posted:** Wed Aug 23, 2006 11:03 pm

Search the forums, you'll run across this question many times. The answer is, use a Mutex.

http://ramblings.aaronballman.com/?p=431
http://ramblings.aaronballman.com/?p=432

Corbin D · **Posted:** Thu Aug 24, 2006 1:15 am

Aaron Ballman wrote:

Search the forums, you'll run across this question many times. The answer is, use a Mutex.

http://ramblings.aaronballman.com/?p=431
http://ramblings.aaronballman.com/?p=432

Aaron, is there any chance we'll see a 'convenience class' that basically does the same thing as VB 6's App.PreviousInstance someday?

Using the Mutex class isn't that hard once you do it a couple of times, but a lot of people from the VB 6 world are used to the quick and easy App.PreviousInstance.

herold · **Joined:** Thu Mar 23, 2006 12:07 am **Posts:** 263

Thank you Aaron that works great.

Aaron Ballman · **Posted:** Thu Aug 24, 2006 7:42 am

Corbin D wrote:

Aaron, is there any chance we'll see a 'convenience class' that basically does the same thing as VB 6's App.PreviousInstance someday?

Certainly, assuming it gets requested (which I don't think I've ever seen before). It's a reasonable request.

simulanics · **Posted:** Mon Oct 08, 2012 1:35 pm

blogs no longer exist...

npalardy · **Posted:** Mon Oct 08, 2012 3:35 pm

Most of this is collected in Aarons book
http://great-white-software.com/rblibra ... cts_id=111

simulanics · **Posted:** Mon Oct 08, 2012 5:42 pm

Thanks norm...as part the RSDS library I wrote a small tool to go through all the forums picking out code, downloads, and links... This was one reported dead by the app and a copy from the "way back machine" has been substituted. Im attempting to match resources to their creators with location (urls) or creators' contact information....attempting to archive "everything" REALbasic is quite tedious ;-p...and so much of it has disappeared through the course of time..thus why I started the RSDS preservation project and code cloud :-)

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Check If Apllication Already Runs