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Prevent second instance of form opening
Message
From
27/08/2002 05:49:41
 
 
To
26/08/2002 21:58:22
Hilmar Zonneveld
Independent Consultant
Cochabamba, Bolivia
General information
Forum:
Visual FoxPro
Category:
Forms & Form designer
Miscellaneous
Thread ID:
00693905
Message ID:
00693942
Views:
24
Thanks Hilmar -Sergey was able to point me to a much better solution.
Again thanks for responding
Gaylen
>>How can I prevent a user from opening an application a second time? Never had the problem before, but seems like it all of a sudden became a problem with one of my clients. I searched both the download files and other thread and never found the right keywords as I remember it coming up several times before. I've toyed around with creating a memory variable,then wiping it out when they exit, but not sure how to deal with a computer crash or system lockup.
>>
>>Any help appreciated
>>Gaylen
>
>The computer crash will only be a problem if you want to check for the same form in more than one application. Each instance of the application keeps its own copy of memory variables.
>
>Commercial frameworks keep an array (in the case of VFX: an array property in the application object), listing all the currently-open forms. Perhaps this should be part of your strategy.
>
>HTH, Hilmar.
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