LiveCode Forums.

Hello,
I created an access control time and attendance for my company using livecode.
It automatically starts when the user login successfully.
I want to add to the program a check that verify if it is already launched. So he use can't run more than an instance of the program.
just to give yo the whole picture:

• windows server
• user login in and so he automatically starts my "check Presence" program. The program will run until the user is working.
• at startup it should check program should check if it's already started, in this case "quit". How to do it?

I would not rely on external files (for example at startup write a file "running"), because in case of failures the file would remain there and the program will never start again.

Do you have any suggestion?

Heya Max, long time no see

I created an access control time and attendance for my company using livecode.

If your starting the program using a livecode program, perhaps "open process" and "openProcesses" is what your looking for?

Actually you should handle (or not, if desired) the "relaunch" message to control what happens when someone instigates another opening of the same stack.

SparkOut wrote: ↑

Mon May 24, 2021 8:21 pm

Actually you should handle (or not, if desired) the "relaunch" message to control what happens when someone instigates another opening of the same stack.

+1 !