We have some software that plays an alert sound on certain conditions. On the same PC multiple users can login and start the software. Anyone recommend a method to communicate with all VCL apps running for different users on that particular PC to tell each app to turn the alert off. Just after any recommendations. Just about to try FindWindow and PostMessage...

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  1. Asbjørn Heid Yep thanks, had given FindWindow a crack but like you say is limited to same user. Events look like the ticket.

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  2. If everything else fails, you can always use a file in a public directory.

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  3. If everything else fails, just use network sockets. This way your app will be able to handle VM scenario.

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