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one instance of application

Posted on 2004-08-24
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Last Modified: 2013-11-20
helo

how to make only one instance of my application running if the same application opens again it will be terminated automaticly with no errors or confermation messages or anything.
just like MSN messenger with no modification done to it .
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Question by:amjedmsa
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5 Comments
 
LVL 13

Expert Comment

by:SteH
ID: 11882851
Read
http://www.flounder.com/nomultiples.htm
It contains most info necessary for that goal.
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Author Comment

by:amjedmsa
ID: 11883145
wow this is much harder to do than the one at MSDN
http://support.microsoft.com/default.aspx?scid=http://support.microsoft.com:80/support/kb/articles/q243/9/53.asp&NoWebContent=1

is there any other easier way that i can do this  ?
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LVL 55

Accepted Solution

by:
Jaime Olivares earned 280 total points
ID: 11883171
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Author Comment

by:amjedmsa
ID: 11883187
nice i think we have a deal
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LVL 13

Expert Comment

by:SteH
ID: 11883194
Is it that much more difficult? The GUID for the message in that article should be used as name of the mutex in the MSDN approach. The article details possible pitfalls of easy solution. The article on MSDN seems to be somewhat updated to not take all problems. Try it out. If you find the MSDN apporach simpler and it works use it. Or read a bit the article on flounder and see whether J.M.Newcomer already knows about shortcommings.
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